BMA145-0330SB010A - BOSCH - Datasheet.Cloud

BMA145

Data sheet

Bosch Sensortec

Rev. 1.3 Page 1 / proprietary information 11 February 2010

BMA145

Triaxial, analog acceleration sensor

Data sheet

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

BMA145 Data sheet

Device order code 0 273 141 027

Package type 16-pin LGA

Data sheet revision 1.3

Release date 11 February 2010

Document number BST-BMA145-DS000-03

Notes Specifications are subject to change without notice.

Product photos and pictures are for illustration purposes only and may

differ from the real product’s appearance.

Proprietary information – not intended for publication.

BMA145

Data sheet

Bosch Sensortec

BMA145 – triaxial, analog 4g analog accelerometer

Key features

- Triaxial, ±4g full scale accelerometer

- Standard LGA package with 4mm x 4mm footprint, 0.9mm height

- 2 operation modes: Stand-by- and normal mode

- Ultra-low power consumption:

- 200μA in operation mode

- 0.7μA in stand-by mode

- Only 1 msec. turn-on time form stand-by mode to operation mode

- Analog output signals: 3 parallel (X, Y, Z) plus 1 serial (multiplexed X, Y, Z)

- Internal 1.5kHz 1st-order low-pass analog filter

- Customizable corner frequency

- On-chip gain and offset compensation, calibrated on factory level.

- Trigger-able self-test capability of MEMS sensor element and ASIC

- RoHS compliant, halogen-free

- Based on automotive-proven Bosch MEMS wafer-fabrication technology & processes

Typical applications

Tilt, motion and vibration sensing in

- Gaming

- Virtual reality

- Sports- and life style wear

- Cell-phones

- Handhelds, PDAs, PNDs

- Healthcare

- Patient monitoring

- Navigation

- Electronic compass compensation

- Computer peripherals

- Man-machine interfaces

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Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

THE BMA145 IN GENERAL

The BMA145 is a triaxial low-g acceleration sensor for consumer market applications, available

in a standard SMD LGA package with a footprint of 4mm x 4mm and a height of only 0.9mm. It

allows measurements of static as well as dynamic accelerations. Due to its three perpendicular

axes it gives the absolute orientation in a gravity field and enables free-fall detection. As all

other Bosch inertial sensors, the BMA145 is a two-chip arrangement, which combines an

application-specific integrated circuit (ASIC) with a three-channel silicon accelerometer, to form

a true micro electro mechanical system (MEMS).

The ASIC evaluates the output of the acceleration-sensing element, corresponding to the

differential capacitance principle. The underlying MEMS technology processes have proven

their capability according to the strictest automotive standards in more than 100 million Bosch

inertial sensors a year so far.

The BMA145 provides 3 parallel analog output signals in a 4g acceleration range. All

acceleration signals are permanently available on 3 independent analog pads through 33kΩ

resistors on each pad. This allows the user defining the signal bandwidth by the mean of

external capacitors connected between each channel output and ground. Additional to the

parallel X, Y and Z output signals there is the option to multiplex any axis to 1 supplementary

output pin in a freely customized manner. This allows the user to connect the triaxial BMA145 to

an economical single channel AD converter without loss of axis information.

For each axis, an independent analog 1.5 kHz 1st-order low-pass filter is included to provide

preconditioning of the measured acceleration signal. The corner frequency of this filter can

easily be customized. Additional signal preconditioning steps are performed by a digital to

analog converter for offset and gain correction purposes with a subsequent signal amplification.

The output signals are ratiometric. In the ±4g acceleration range the sensor is offering a

sensitivity of 300mV/g at 3.0 V supply voltage (VDD / 10) and 175μg/√Hz as a typical noise level.

The typical current consumption is 200μA in operation mode. Furthermore, the sensor can be

switched into a standby mode via supplementary selection pins. In standby mode the sensor

module features an ultra low current consumption of typically 0.7 μA. The return from standby

mode to full performance conditions is performed in less than 1ms wake up time.

The BMA145 sensor module is ready to use due to test and calibration at factory level. All

calibration parameters, e.g. for offset and sensitivity, are stored in an internal EEPROM. The

sensor also features full self-test capability for all three axes. It is activated via a single self test

activation pin which results in a physical deflection of the seismic mass in the sensing element

due to electrostatic forces. Thus, it provides full contact and functional testing of the complete

signal evaluation path including the MEMS acceleration-sensing element and the evaluation

ASIC.

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Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

CONTENT

1 SPECIFICATION................................................................................................................................... 6

2 ABSOLUTE MAXIMUM RATINGS........................................................................................................8

3 BMA145 FEATURES............................................................................................................................ 9

3.1 GENERAL DESCRIPTION .................................................................................................................. 9

3.1.1 MEMS element ....................................................................................................................... 9

3.1.2 ASIC........................................................................................................................................ 9

3.2 CHANNEL MULTIPLEXER................................................................................................................ 10

4 OPERATION ....................................................................................................................................... 11

4.1 POWER-ON-RESET AND POWER-UP SEQUENCE............................................................................... 11

4.2 OPERATION MODE SELECTION....................................................................................................... 11

4.3 CHANNEL MULTIPLEXER OUTPUT SELECTION .................................................................................. 11

4.4 ANALOG OUTPUT ON AX, AY AND AZ.............................................................................................. 12

4.5 SELF TEST................................................................................................................................... 12

4.6 POLARITY OF THE ACCELERATION OUTPUT ..................................................................................... 14

4.7 PIN CONFIGURATION (TOP VIEW, PADS NOT VISIBLE)........................................................................ 15

4.8 CONNECTING DIAGRAM................................................................................................................. 16

4.8.1 Full feature operation............................................................................................................ 16

4.8.2 Simple 3-channel operation.................................................................................................. 16

4.8.3 Customizing bandwidth and noise........................................................................................ 17

4.9 HANDLING INSTRUCTION ............................................................................................................... 17

5 PACKAGE .......................................................................................................................................... 18

5.1 OUTLINE DIMENSIONS................................................................................................................... 18

5.2 PRINTED CIRCUIT BOARD (PCB) DESIGN ........................................................................................ 19

5.3 MARKING .................................................................................................................................... 20

5.3.1 Mass production samples..................................................................................................... 20

5.3.2 Engineering samples ............................................................................................................ 20

5.4 MOISTURE SENSITIVITY LEVEL AND SOLDERING............................................................................... 21

5.5 TAPE AND REEL SPECIFICATION ..................................................................................................... 22

5.5.1 Orientation ............................................................................................................................ 23

5.6 ROHS COMPLIANCY ..................................................................................................................... 24

5.7 HALOGEN CONTENT ..................................................................................................................... 24

5.8 NOTE ON INTERNAL PACKAGE STRUCTURE ..................................................................................... 24

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Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

6 LEGAL DISCLAIMER......................................................................................................................... 25

6.1 ENGINEERING SAMPLES................................................................................................................ 25

6.2 PRODUCT USE ............................................................................................................................. 25

6.3 APPLICATION EXAMPLES AND HINTS............................................................................................... 25

7 DOCUMENT HISTORY AND MODIFICATION .................................................................................. 26

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Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

1 Specification

If not stated otherwise, the given values are maximum values over lifetime and are valid for the specified

temperature and voltage ranges. Min./max. values represent 3-sigma limits.

Operating range

Parameter Symbol Condition Min Typ Max Units

Acceleration range gFS4g ±4g

 4 g

Supply voltage VDD 1.8 3.0 3.5 V

Digital input

low level VIL for TEST, ST, SEL.0

and SEL.1 0.2 * VDD V

Digital input

high level VIH for TEST, ST, SEL.0

and SEL.1 0.8 * VDD V

Supply current in

normal mode IDD analog and digital 200 290 μA

Supply current in

stand-by mode IDDsbm analog and digital 0.7 μA

Operating

temperature TA full performance -40 +85 °C

Output signal

Unless stated otherwise output signals are for operation at ±4g range, VDD = 3.0 V and T = 25ºC

Parameter Symbol Condition Min Typ Max Units

1.455 1.500 1.545 V

VDD = 3.0V -150 0 +150 mg

Zero-g voltage Off

1.8V ≤ VDD ≤ 3.5V VDD / 2 V

Zero-g voltage

temperature drift TCO -40°C  TA  +85°C ± 1 mg/K

VDD = 3.0V 0.288 0.300 0.312

Sensitivity S

1.8V ≤ VDD ≤ 3.5V -4% VDD / 10 +4%

V/g

Bandwidth

1st order filter f-3dB with 1nF connected to

Ax, Ay, Az 1.500 kHz

Non-linearity NL best fit straight line ±0.5 %FS

Self test response TST triggerable via ST pin 0.25 (x,y)

0.5 (z) g

Output noise nrms rms 175 Hzµg /

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BMA145

Data sheet

Bosch Sensortec

Sensor performance and operating conditions

Parameter Symbol Condition Min Typ Max Units

Start-Up time1 T

st_up with 1nF connected to

Ax, Ay, Az 3 ms

Wake-Up time2 T

w_up with 1nF connected to

Ax, Ay, Az 1 ms

Output resistance Rx, Ry, Rz On chip 33

kΩ

Pull-down resistance

Rpulldown on ST and TEST pad 20 kΩ

Maximal load on

AMUX CL 25 pF

Mechanical trait

Parameter Symbol Condition Min Typ Max Units

Cross axis

sensitivity S relative contribution

between 3 axes 0.2 FS%

Alignment error δa relative to package

outline ±0.5 °

1 The start-up time is the total duration between application of the voltage supply and obtaining analog signals on the three channels

with less than 1% (of full scale) error between signal and respective asymptotic values.

2 The wake-up time is the total duration between transiting from stand-by to normal mode and obtaining analog signals on the three

channels with less than 1% (of full scale) error between signal and respective asymptotic values.

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BMA145

Data sheet

Bosch Sensortec

2 Absolute maximum ratings

Parameter Condition / Symbol Min Max Units

Extended supply voltage VDD_ext 0°C to 85°C 1.72 3.55 V

Supply voltage limit VDD_Limit -0.3 3.60 V

Pad voltage Vpad V

ss-0.3 Vdd+0.3 V

Storage temperature Tstore -50 +150 °C

duration ≤ 100μs 10,000 g

duration ≤ 500μs 5,000 g

duration ≤ 1.0ms 3,000 g

Mechanical shock

free fall

onto hard surfaces 1.5 m

HBM 2.0 kV

ESD CDM 500 V

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BMA145

Data sheet

Bosch Sensortec

3 BMA145 features

3.1 General description

The BMA145 is a fully calibrated, triaxial low-g analog acceleration sensor. It allows

measurements of static as well as dynamic accelerations in all three dimensions. Due to its

three perpendicular axes it gives the absolute orientation in a gravity field and enables free-fall

detection. The sensor is set up as a two-chip arrangement consisting of a three-channel

capacity differential MEMS acceleration-sensing element and an application specific integrated

circuit (ASIC). Both parts are embedded in a standard, surface mountable land grid array

package (LGA). In the following, the LGA packed two-chip arrangement is defined as sensor

module.

The accelerometer features a low-pass characteristic, with a bandwidth limited to 1.5 kHz

(nominal value). This value can further be reduced using external capacitors to improve or

customize noise level. It is advised to reduce bandwidth to minimum value required in the

application.

The bandwidth of all output pins can be selected by the value of the capacitors connected to the

Ax, Ay and Az output. Each channel behaves like an independent low-pass RC filter, given by

the internal 33kΩ resistor and the external capacitor. The resulting RC low pass filter on Ax, Ay

an Az is also valid for the multiplexer output pin. Do not connect an additional external capacitor

on the multiplexer output pin. Refer to chapter 4.8 for details.

3.1.1 MEMS element

The production of the sensing element is based on standard semiconductor- and standard

MEMS processes. The main steps are layer deposition, layer masking and layer structuring in a

technology cycle, similar to the standard semiconductor manufacturing. In detail, the process

cycle starts with the deposition of a thick epitaxial layer on a sacrificial oxide. The large

thickness allows the design of working capacitances of up to 1pF. The poly-layer is patterned by

deep reactive ion etching in an inductively coupled plasma (DRIE-ICP, the so-called Bosch

process). A large aspect ratio and a very high anisotropy is achieved by periodic passivation of

the side walls in between the etch intervals. Afterwards the sacrificial layer is removed. The

sensing element is hermetically sealed by a bulk micromachined cap to prevent damages of the

structure by dicing, packaging and operation of the device.

3.1.2 ASIC

The ASIC is produced in a standard CMOS process. It evaluates, corrects and amplifies the

output signal of the MEMS acceleration-sensing element. Simplified considered, the ASIC

consists mainly out of 3 capacity voltage converters and 3 signal conditioners, a channel

multiplexer, a digital to analog converter an EEPROM memory and an internal RC oscillator. For

customized testing an electrostatic force to the sensor electrodes can be induced and compared

with a nominal condition. Thus, a general statement about the functional capability of the sensor

module can be made at any time.

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Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

3.2 Channel multiplexer

On the Ax, Ay, and Az output pin there is always the possibility to grip the continuous analog

output signals of the corresponding axis. Additional to these continuously available signals,

there is the possibility to multiplex any of the 3 axis fully customized to one separate AMUX

output pin via an internal channel multiplexer. This e.g. enables the option to read out all three

axes at only one output pin.

Which of the acceleration signal of the 3 axis is actually multiplexed to the AMUX output pin – or

in which sequence – can be selected through the corresponding SEL.0 and SEL.1 pins of the

sensor module (see chapter 4.3). Do not connect any external capacitor on the AMUX output

pin.

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BMA145

Data sheet

Bosch Sensortec

4 Operation

4.1 Power-on-reset and power-up sequence

An internal power-on reset (POR) is implemented to ensure proper reset during power-up. The

POR is active during 100μs (typical value). For this application the power on sequence only

occurs when a battery or an external supply is connected to VDD. Normally GND is connected

first. There should be a coupling capacitor connected between VDD and GND as shown in

chapter 4.8. Low resistance connections are required between decoupling capacitor and sensor

pads (< 100Ohms).

4.2 Operation mode selection

Two operation modes can be selected: NORMAL and STAND-BY mode. The operation modes

are selected by setting SEL1 and SEL0 according to the table given below.

SEL.1 SEL.0 Operation

Mode

Operation

feature

Current

Consumption Description

0 0

0 1

1 0

NORMAL full

performance

200 μA

(typical)

Acceleration measurements of all axes

(Ax, Ax, Az plus AMUX) are performed.

All sensor features are enabled.

1 1

STAND-

current

saving

0,7 μA

(typical)

Acceleration measurements are stopped,

Ax, Ay, Az and AMUX signals are driven

to GND through 110kΩ resistors.

When stand-by mode is activated, all sensor electrodes are connected to Vss. No electrostatic

forces are generated to the electrodes. Power consumption is drastically reduced in this mode.

All blocks are disabled except some bias generation and power-on reset generation. This

feature enables ultra low power mode operation if the sensor module is turned into Standby

mode e.g. between each acceleration measurement.

4.3 Channel multiplexer output selection

Using the Channel Multiplexer, it is possible to choose specific axis output signals on the AMUX

pin. This allows the user to connect the triaxial BMA145 to an economical single channel AD

converter without loss of axis information. The channel selection on AMUX is performed by

setting SEL.0 and SEL.1 according to the following table. By setting both, SEL.0 and SEL.1 to

1, the sensor module is set to stand-by Mode.

SEL.1 SEL.0 Operation

Mode Output Signal on Channel Multiplexer Serial Output Pin (AMUX)

0 0 NORMAL Ax, Ay, Az plus AMUX = Ax

0 1 NORMAL Ax, Ay, Az plus AMUX = Ay

1 0 NORMAL Ax, Ay, Az plus AMUX = Az

1 1 STAND-BY Sensor module set to Standby Mode, no Signal on X, Y, Z and AMUX

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BMA145

Data sheet

Bosch Sensortec

IMPORTANT NOTE: If the features described in 4.2 and 4.3 will not be used, SEL.0 and SEL.1

must be tied to GND. In all other cases, SEL.0 and SEL.1 transitions must be synchronous

within a 20ns tolerance to avoid the ASIC to switch to an unwanted state at transitions (valid for

the four possible transitions where the two signals SEL.0 and SEL.1 have to change

simultaneously). See also the figure given below.

4.4 Analog output on Ax, Ay and Az

By selecting the operation mode to “Normal” all 3 axis provide acceleration measurement

signals simultaneously on the Ax, Ay and Az pins according to the following equation.











 X

XaS

A2 









 Y

YaS

A2 









 Z

ZaS

Ax, Ay and Az are the vector components of the acting acceleration. According to chapter 1 the

sensitivity in the ±4g range corresponds to VDD/10 given in V/g. This means, the maximal

default acceleration range is ±4g.

4.5 Self test

The sensor features an on-chip self-test which can be activated by using the corresponding self

test input pin. The self test is realized by a physical deflection of the seismic mass due to an

electrostatic force. Thus, it provides contact and functional testing of the complete signal

evaluation path including the MEMS acceleration-sensing element and the evaluation ASIC.

The self test is activated by setting the self test activation input pin to logic 1. The test acts on all

three channels simultaneously. The typical change in output will be a static offset of

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BMA145

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Bosch Sensortec

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approximately +0.25g for X and Y and +0.5g for Z axis (nominal value). For the ±4g acceleration

range this corresponds to a typical output signal delta of ∆Uoutnom [v] = (VDD [v] / 10) x 0.25 for X

and Y and ∆Uoutnom [v] = (VDD [v] / 10) x 0.5 for Z, to be added as a static voltage offset to the

current output signal Xout, Yout and Zout. The self test response remains as a static offset on

the X, Y, Z and AMUX output as long as the self test activation input pin is not set back to logic

Simplified, while the self test is activated, any acceleration or gravitational force applied to the

sensor will be observed in the output signal as a superposition of both acceleration and self test

signal.

Self Test Response

Output Signal [LSB]

Self Test Activation Bit

Self Test Activation Pin

Output Signal [V]

BMA145

Data sheet

Bosch Sensortec

4.6 Polarity of the acceleration output

If the sensor is accelerated into the indicated directions, the corresponding channels will deliver

a positive acceleration signal (dynamic acceleration).

Example: If the sensor is at rest or at uniform motion in a gravity field according to the figure

given below, the output signals are:

 ± 0g for the X channel

 ± 0g for the Y channel

 + 1g for the Z channel

top side

gravity vector

The following table lists all corresponding output signals on Ax, Ay, and Az while the sensor is

at rest or at uniform motion in a gravity field under assumption of a top down gravity vector as

shown above.

Sensor orientation

(gravity vector )

Output signal Ax

0g / 1.5V

-1g / 1.2V

0g / 1.5V

+1g / 1.8V

0g / 1.5V

Output signal Ay

+1g / 1.8V

0g / 1.5V

-1g / 1.2V

0g / 1.5V

Output signal Az

0g / 1.5V

+1g / 1.8V

-1g / 1.2V

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

upright

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BMA145

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Bosch Sensortec

4.7 Pin configuration (top view, pads not visible)

top view

Pin 1 identifier

Pin Name Digital - Analog Description

01 DNC D in/out Do not connect! Reserved for factory trimming!

02 ST D in Self Test Activation Pin

03 GND A Ground Connection

04 DNC - Do not connect!

05 SEL.0

1) D in Channel Multiplexer Selection Pin 0

06 GND A Ground Connection

07 SEL.1

1) D in Channel Multiplexer Selection Pin 1

08 Z.out A out Z Acceleration Parallel Output

09 AMUX A out Channel Multiplexer Serial Output Pin

10 Y.out A out Y Acceleration Parallel Output

11 DNC - Do not connect!

12 X.out A out X Acceleration Parallel Output

13 DNC - Do not connect!

14 VDD2 A in Supply Voltage Connection

15 VDD1 A in Supply Voltage Connection

16 DNC - Do not connect!

1) Connect to GND if stand-by mode and multiplexed outputs will not be used.

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BMA145

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Bosch Sensortec

4.8 Connecting diagram

4.8.1 Full feature operation

The following connection diagram describes the recommended decoupling of the power source

(c1=100nF and c2=10nF) as well as the connection to enable full feature operation of the

BMA145 including Stand-By, AMUX and Self Test capability. The DNC pins (marked with “X”)

must not be connected (floating). For dimensioning of Cx, Cy and Cz refer to chapter 4.8.3.

4.8.2 Simple 3-channel operation

The below connection diagram describes the recommended decoupling of the power source

(c1=100nF and c2=10nF) as well as the connection to enable a simple 3 channel operation of

the BMA145. Stand-By, AMUX and Self Test capability will be disabled. The DNC pins (marked

with “X”) must not be connected (floating). For dimensioning of Cx, Cy and Cz refer to chapter

4.8.3.

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4.8.3 Customizing bandwidth and noise

According to the following equation a customized cut-off frequency can be realized by a simple

dimension of Cx (Cy , Cz) to create a RC low pass filter. The below given equation corresponds

to the x-axis but it is also representative for the y- and z-axis. The AMUX cut-off frequency

output behavior is directly linked up to Cx , C

y & Cz . Do not connect an additional external

capacitor on the multiplexer output pin.

xc ck

f

332 1



In order to achieve a good compromise between bandwidth and signal conditioning, we

recommend to set up the bandwidth between ~300 . . . ~150Hz. To operate the BMA145 with

the maximum bandwidth, which internally is limited to 1.5kHz, we recommend to use min. 1nF

for Cx , Cy & Cz .

4.9 Handling instruction

Micromechanical sensors are designed to sense acceleration with high accuracy even at low

amplitudes and contain highly sensitive structures inside the sensor element. The MEMS sensor

can tolerate mechanical shocks up to several thousand g's. However, these limits might be

exceeded in conditions with extreme shock loads such as e.g. hammer blow on or next to the

sensor, dropping of the sensor onto hard surfaces etc.

We strongly recommend to avoid g-forces beyond the specified limits (see section 2) during

transport, handling and mounting of the sensors in a defined and qualified installation process.

This device has built-in protections against high electrostatic discharges or electric fields (e.g.

2kV HBM); however, anti-static precautions should be taken as for any other CMOS component.

Unless otherwise specified, proper operation can only occur when all terminal voltages are kept

within the supply voltage range. Unused inputs must always be tied to a defined logic voltage

level.

Please refer to the separately available document “Handling, soldering & mounting instructions”

for the BMA145.

BMA145

Data sheet

Bosch Sensortec

5 Package

5.1 Outline dimensions

The sensor housing is a standard LGA package. It is compliant with JEDEC Standard MO-229

Type VGGD-3. Its dimensions are the following:

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5.2 Printed circuit board (PCB) design

The following PCB design is recommended in order to minimize solder voids and stress acting

on the sensing element. All dimensions are given in mm.

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Bosch Sensortec

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5.3 Marking

5.3.1 Mass production samples

Labeling Name Symbol Remark

Product number

Sub-con ID A Coded alphanumerical

Date code 1 Y

Y: year, numerically coded

9 = 2009, 0 = 2010, 1 = 2011, ...

Date code 2 WW WW: working week, numerical

Lot counter CCC

Pin 1 identifier •

5.3.2 Engineering samples

Labeling Name Symbol Remark

Product name 145 BMA145

Eng. Sample ID e Engineering samples are marked with an “e”

Sub-con ID A Coded alphanumerically

Date code YWW

Y: year, numerically coded

9 = 2009, 0 = 2010, 1 = 2011, ...

WW: Working week, numerical

Version counter CCC e.g. 0C1 = C1-Sample

Pin 1 identifier •

145e

AYWW

0Cn

145e

AYWW

0Cn

CCC

027

AYWW

CCC

BMA145

Data sheet

Bosch Sensortec

5.4 Moisture sensitivity level and soldering

The moisture sensitivity level of the BMA145 sensors corresponds to JEDEC Level 1, see also

- IPC/JEDEC J-STD-020C "Joint Industry Standard: Moisture/Reflow Sensitivity

Classification for non-hermetic Solid State Surface Mount Devices"

- IPC/JEDEC J-STD-033A "Joint Industry Standard: Handling, Packing, Shipping and Use of

Moisture/Reflow Sensitive Surface Mount Devices".

The sensor fulfils the lead-free soldering requirements of the above-mentioned IPC/JEDEC

standard, i.e. reflow soldering with a peak temperature up to 260°C.

260 °C

Rev. 1.3 Page 21 / proprietary information 11 February 2010

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

5.5 Tape and reel specification

The BMA145 is shipped in a standard cardboard box. The box dimension for 1 reel is:

L x W x H 35cm x 35cm x 6cm

BMA145 quantity: 5,000pcs per reel; please handle with care.

Rev. 1.3 Page 22 / proprietary information 11 February 2010

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

5.5.1 Orientation

The next figure shows the orientation of the BMA145 devices relative to the tape:

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

027

AYWW

CCC

Rev. 1.3 Page 23 / proprietary information 11 February 2010

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

5.6 RoHS compliancy

The BMA145 sensor meets the requirements of the EC restriction of hazardous substances

(RoHS) directive, see also:

Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003

on the restriction of the use of certain hazardous substances in electrical and electronic

equipment.

5.7 Halogen content

Results of chemical analysis show that the BMA145 contains less than 900ppm (by weight) of

Fluorine, Chlorine, Iodine and Bromine (i.e. <900ppm per each substance).

Therefore the BMA145 can be regarded as halogen-free.

For more details on the analysis results please contact your Bosch Sensortec representative.

5.8 Note on internal package structure

Within the scope of Bosch Sensortec’s ambition to improve ist products and secure the product

supply while mass production, Bosch Sensortec qualifies additional sources fort he LGA

package of the BMA145.

While Bosch Sensortec took care that all of the technical packages parameters are described

above are 100% identical for both sources, there can be differences in the chemical content and

the internal structural between the different package sources.

However, as secured by the extensive product qualification process of Bosch Sensortec, this

has no impact to the usage or to the quality of the BMA145 product.

Rev. 1.3 Page 24 / proprietary information 11 February 2010

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet

Bosch Sensortec

6 Legal disclaimer

6.1 Engineering samples

Engineering Samples are marked with an asterisk (*) or (e). Samples may vary from the valid

technical specifications of the product series contained in this data sheet. They are therefore not

intended or fit for resale to third parties or for use in end products. Their sole purpose is internal

client testing. The testing of an engineering sample may in no way replace the testing of a

product series. Bosch Sensortec assumes no liability for the use of engineering samples. The

Purchaser shall indemnify Bosch Sensortec from all claims arising from the use of engineering

samples.

6.2 Product use

Bosch Sensortec products are developed for the consumer goods industry. They may only be

used within the parameters of this product data sheet. They are not fit for use in life-sustaining

or security sensitive systems. Security sensitive systems are those for which a malfunction is

expected to lead to bodily harm or significant property damage. In addition, they are not fit for

use in products which interact with motor vehicle systems.

The resale and/or use of products are at the purchaser’s own risk and his own responsibility.

The examination of fitness for the intended use is the sole responsibility of the Purchaser.

The purchaser shall indemnify Bosch Sensortec from all third party claims arising from any

product use not covered by the parameters of this product data sheet or not approved by Bosch

Sensortec and reimburse Bosch Sensortec for all costs in connection with such claims.

The purchaser must monitor the market for the purchased products, particularly with regard to

product safety, and inform Bosch Sensortec without delay of all security relevant incidents.

6.3 Application examples and hints

With respect to any examples or hints given herein, any typical values stated herein and/or any

information regarding the application of the device, Bosch Sensortec hereby disclaims any and

all warranties and liabilities of any kind, including without limitation warranties of non-

infringement of intellectual property rights or copyrights of any third party. The information given

in this document shall in no event be regarded as a guarantee of conditions or characteristics.

They are provided for illustrative purposes only and no evaluation regarding infringement of

intellectual property rights or copyrights or regarding functionality, performance or error has

been made.

Rev. 1.3 Page 25 / proprietary information 11 February 2010

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.

BMA145

Data sheet Bosch Sensortec

Rev. 1.3 Page 26 / proprietary information 11 February 2010

7 Document history and modification

Rev. No Chapter Description of modification/changes Date

1.0 Document creation 04-Feb-2008

1.1 1 Update output signal table 02-Apr-2008

2 Update maximum ratings table 02-Apr-2008

4.6 Modified various output signal polarities in the table 02-Apr-2008

5.4 Update JEDEC level to MSL1 02-Apr-2008

1.2 1 Update typ. self test response to 0.7g 06 February 2009

4.3 Update Note for Sel.0 + SEL.1 06 February 2009

4.5 Update typ. self test response to 0.7g 06 February 2009

4.7 Update pin configuration # 4, 5, 7, 11 06 February 2009

4.8, 4.8.x Update connecting diagram 06 February 2009

5.3.2 Update engineering sample labeling 06 February 2009

5.7 New chapter “Halogen content” 06 February 2009

1.3 Page 2

Update 11 February 2010

Introduced 3-sigma limits

Update typ. self test response to 0.25g (x, y) and to 0.5g (z)

Update output noise density

4.5

Update typ. self test response to 0.25g (x, y) and to 0.5g (z)

5.3.1

Date code 1 coded numerically, updated marking

5.3.2

Date code coded numerically

4.6, 5.5.1

Updated device marking

Bosch Sensortec GmbH

Gerhard-Kindler-Strasse 8

72770 Reutlingen / Germany

contact@bosch-sensortec.com

www.bosch-sensortec.com

Modifications reserved | Printed in Germany

Specifications subject to change without notice

Document number: BST-BMA145-DS000-03

Version_1.3_022010

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice.