FXPS7550A4T1 - NXP SEMICONDUCTORS

FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Rev. 4.1 — 29 May 2019 Product data sheet

1 General description

The FXPS7550A4 high-performance, high-precision absolute pressure sensor consists of

a compact capacitive micro-electro-mechanical systems (MEMS) device coupled with a

digital integrated circuit (IC) producing a fully calibrated analog output.

This sensor is ideal for many automotive applications such as manifold air pressure

(MAP), turbo MAP, comfort seating and other applications requiring operating absolute

pressure ranges up to 550 kPa.

The sensing element is based on NXP's high precision capacitive pressure cell

technology. The architecture benefits from redundant pressure transducers as an

expanded quality measure. It delivers highly accurate ratiometric analog readings of

absolute pressure while operating from either a 3.3 V or 5.0 V power supply.

The sensor operates over a pressure range of 20 kPa to 550 kPa and over a wide

temperature range of –40 ºC to 130 ºC

The sensor comes in an industry-leading 4 mm x 4 mm x 1.98 mm, restriction of

hazardous substances (RoHS) compliant, high-power quad flat no-lead (HQFN)

package[1] suitable for small printed circuit board (PCB) integration. Its AEC-Q100[2]

compliance, high accuracy, reliable performance and high media resistivity make it ideal

for use in automotive, industrial, and consumer applications.

2 Features and benefits

•Absolute pressure range: 20 to 550 kPa

•Operating temperature range: –40 °C to 130 °C

•Analog output for monitoring of the absolute pressure signal

•Pressure transducer and digital signal processor (DSP)

–Internal self test

•Capacitance to voltage converter with anti-aliasing filter

•Sigma delta ADC plus sinc filter

•800 Hz or 1000 Hz low-pass filter for absolute pressure

•Lead-free, 16-pin HQFN, 4 mm x 4 mm x 1.98 mm package

3 Applications

3.1 Automotive

•Manifold air pressure

–MAP, TurboMAP

•Small engine control

•Liquid propane gas (LPG) or compressed natural gas (CNG) engine management

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

2 / 22

3.2 Industrial

•Compressed air

•Manufacturing line control

•Gas metering

•Weather stations

3.3 Medical/Consumer

•Blood pressure monitor

•Medicine dispensing systems

•White goods

4 Ordering information

Table 1. Ordering information

PackageType number

Name Description Version

FXPS7550A4 HQFN16 HQFN16, plastic, thermal enhanced quad flat pack; no leads; 16 terminals; 0.8 mm

pitch; 4 mm x 4 mm x 1.98 mm body

SOT1573-1

4.1 Ordering options

Table 2. Ordering options

Device Range (kPa) Packing Temperature range

FXPS7550A4T1 20 to 550 kPa Packing Tape and Reel –40 °C to 130 °C

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

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5 Block diagram

aaa-029725

P-CELL 0

C2V GAIN

VREF

P-CELL 1

AAF PABS Σ

CONVERTER

SINC

FILTER

COMMON

MODE

ERROR

DETECTION

TRIM

VREG

DSP

IIR

LPF

PABS

USER

OFFSET

ADJUST

CONTROL

LOGIC

PCM

ENCODER

ANALOG

FILTER

AND

BUFFER

TEST

I/O

OTP

ARRAY

OSCILLATOR

LOW VOLTAGE

DETECTION

INTERNAL VOLTAGE

REGULATOR

LOW VOLTAGE

DETECTION

REFERENCE

VOLTAGE

VCC

VSS

VREF

VREGA

VREG

TEST

ANALOG_OUT

Figure 1. Block diagram of FXPS7550A4

6 Pinning information

6.1 Pinning

VCC

TEST

VSS

17 ANALOG_OUT

TEST

aaa-029728

Transparent top view

terminal 1

index area

Figure 2. Pin configuration for 16-pin HQFN

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

4 / 22

6.2 Pin description

Table 3. Pin description

Pin Pin name Description

2, 5, 8, 9, 10, 11 TEST Pins 2, 5, 8, 9, 10 and 11 are test pins and must be left unterminated in the

application.

3 TEST Pin 3 is required to be tied to VCC for device operation.

4, 15 VSS Pins 4 and 15 are the supply return nodes and are connected internally to the die

attach pad (pin 17).

6, 7, 14 NC Pins 6, 7 and 14 are not internally connected and can be left unconnected in the

application.

12 ANALOG_OUT Pin 12 provides a ratiometric analog output proportional to the absolute pressure

sensor data.

1, 13, 16 VCC Pins 1, 13 and 16 supply power to the device. An external capacitor must be

connected between these pins and VSS, as shown in the application diagram.

17 PAD Pin 17 is the die attach flag and must be connected to VSS.

7 Functional description

7.1 Voltage regulators

The device derives its internal supply voltage from the VCC and VSS pins. An external

filter capacitor is required for VCC, as shown in Figure 12.

A reference generator provides a reference voltage for the ΣΔ converter.

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

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aaa-029736

COMPARATOR

VCC

VOLTAGE

REGULATOR

REFERENCE

GENERATOR

DIGITAL

LOGIC

DSP

OTP

ARRAY

CONVERTER

VREF

VREF VREGA

VREGA

VCC

VREG

C2V

TRIMTRIM

BIAS

GENERATOR

TRIM

VOLTAGE

REGULATOR

BANDGAP

REFERENCE

VREG_MOD

VREG

VREGA

VREF

OSCILLATOR

COMPARATOR

POR

VCC_UV_ERR

COMPARATOR

Figure 3. Voltage regulation and monitoring

7.2 Pressure sensor signal path

7.2.1 ΣΔ converter

A second order sigma delta modulator converts the voltage from the analog front end to a

data stream that is input to the DSP. A simplified block diagram is shown in Figure 4.

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

6 / 22

aaa-023446

z-1

1 - z-1

1 - bit

quantizer

second

integrator

ADC

V = +VREF, 0 V, -VREF

Y(Z) = {0,1}

β2= 1

α2= 1

DAC

z-1

1 - z-1

first

integrator

V = C x Vx/CINT1

CTOP

transducer

C = CTOP - CBOT

CBOT

CINT1

β1= 1

α1=

Figure 4. ΣΔ converter block diagram

The sigma delta modulator operates at a frequency of 1 MHz, with the transfer function in

Equation 1.

(1)

7.2.2 Digital signal processor (DSP)

A DSP is used to perform signal filtering and compensation. A diagram illustrating the

signal processing flow within the DSP is shown in Figure 5.

aaa-029737

ΣOUT = Y(Z)

SINC

FILTER TRIM

IIR

LPF PABS

USER OFFSET

AND

GAIN ADJUST

Figure 5. Signal chain diagram

7.2.2.1 Decimation sinc filter

In Equation 2, the output of the ΣΔ modulator is decimated and converted to a parallel

value by two third-order sinc filters; the first with a decimation ratio of 24 and the second

with a decimation ratio of 4.

(2)

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

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aaa-023449

frequency (Hz)

103105

104

magnitude

(dB)

-120

-100

-80

-60

-40

-20

minimum

typical

maximum

Figure 6. Sinc filter response

7.2.2.2 Signal trim and compensation

The device includes digital trim to compensate for sensor offset, sensitivity, and

nonlinearity over temperature.

7.2.2.3 Low-pass filter

Data from the sinc filter is processed by an infinite impulse response (IIR) low-pass filter

with the transfer function and coefficients shown in Equation 3.

(3)

Table 4. IIR low pass filter coefficients

Filter

number

Typical –3 dB

frequency

Filter

order

Filter coefficients (24 bit) Group

delay (μs)

Typical

attenuation @

1000 Hz (dB)

a00.088642612609670 — —

n11 0.029638050039039 d11 1

n12 0.087543281056143 d12 –1.422792640957290

n13 0.029695285913601 d13 0.511435253566960

n21 0.250241278804809 d21 1

n22 0.499999767379068 d22 –1.503329908017845

1 800 Hz 4

n23 0.249758953816089 d23 0.621996524706640

418 4.95

a00.129604264748411 — —

n11 0.043719804402508 d11 1

n12 0.087543281056143 d12 –1.300502656562698

n13 0.043823599710731 d13 0.430106921311110

n21 0.250296586927511 d21 1

n22 0.499999648540934 d22 –1.379959571988366

2 1000 Hz 4

n23 0.249703764531484 d23 0.555046257157745

333 2.99

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

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aaa-029738

frequency (Hz)

1 104

103

10 102

-60

-40

-80

-20

magnitude

(dB)

-100

minimum

typical

maximum

Figure 7. 800 Hz, 4-pole, low-pass filter response

aaa-029891

frequency (Hz)

1 104

103

10 102

400

600

200

800

1000

delay

(µs)

minimum

typical

maximum

Figure 8. 800 Hz, 4-pole output signal delay

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

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aaa-029739

frequency (Hz)

1 104

103

10 102

-60

-40

-80

-20

magnitude

(dB)

-100

minimum

typical

maximum

Figure 9. 1000 Hz, 4-pole, low-pass filter response

aaa-029892

frequency (Hz)

1 104

103

10 102

400

600

200

800

1000

delay

(µs)

minimum

typical

maximum

Figure 10. 1000 Hz, 4-pole output signal delay

7.3 Analog output function

7.3.1 Analog output signal chain

The device provides an analog output ratiometric to the supply voltage. The analog

output is enabled by default. Selecting the analog output enables the following functions:

•The non-interpolated PABS sensor data output is saturated to 10 bits and converted to

an unsigned value.

•The 10-bit sensor value is input into a summer clocked at 10 MHz.

•The carry from the summer circuit generates a PCM output.

•The PCM signal is filtered by a 2-pole active low pass filter to generate an analog

signal.

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

10 / 22

7.3.2 Analog output transfer function

The analog output transfer function for a 5.0 V supply is as shown in Figure 11.

aaa-029745

absolute pressure (kPa)

0 400 450 500 550350300 600200 25050 100 150

analog

output

(V)

Figure 11. Analog output transfer function

8 Maximum ratings

Absolute maximum ratings are the limits the device can be exposed to without

permanently damaging it. Absolute maximum ratings are stress ratings only; functional

operation at these ratings is not guaranteed. Exposure to absolute maximum ratings

conditions for extended periods might affect device reliability.

This device contains circuitry to protect against damage due to high static voltage or

electrical fields. NXP advises that normal precautions be taken to avoid application of any

voltages higher than maximum-rated voltages to this high-impedance circuit.

Table 5. Maximum ratings

Symbol Parameter Conditions Min Max Unit

VCCMAX Supply Voltage VCC, VCCIO

[1] — +6.0 V

VIOMAX Input/Output Max on pins ANALOG_OUT

TESTx

[1] –0.3 VCC + 0.3 V

hDROP Drop shock To concrete, tile or steel surface, 10 drops,

any orientation

[2] — 1.2 m

Tstg Storage [2] –40 +130 °C

Temperature range

Junction [3] –40 +150°C °C

PMAX Continuous [3] — 600 kPa

PBURST

Maximum absolute pressure

Burst (tested at 100 ms) [2] — 1650 kPa

PMIN Minimum absolute pressure Continuous [1] — 20 kPa

fSEAL Pressure sealing force Applied to top face of package [1] — 10 N

θJA Thermal resistance [4] — 120 °C/W

ESD and latch-up protection characteristics

VESD Human body model (HBM) [2] –2000 2000 V

VESD

Electrostatic discharge (per

AEC-Q100, Rev H) Charge device model (CDM) [2] [5] –500 500 V

[1] Parameter verified by parametric and functional validation.

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

11 / 22

[2] Parameter verified by qualification testing (Per AEC-Q100 Rev H or per NXP specification).

[3] Functionality verified by modeling, simulation and/or design verification.

[4] Thermal resistance provided with device mounted to a two-layer, 1.6 mm FR-4 PCB as documented in AN1902 with one signal layer and one ground

layer.

[5] CDM tested at ±750 V for corner pins and ±500 V for all other pins.

Caution

This device is sensitive to mechanical shock. Improper handling can cause permanent damage to the part.

Caution

msc896

This is an ESD sensitive device. Improper handling can cause permanent damage to the part.

9 Operating range

Table 6. Electrical characteristics—supply and I/O

VCC_min ≤ (VCC - VSS) ≤ VCC_max, TL ≤ TA ≤ TH, ΔT ≤ 25 °C/min, unless otherwise specified.

Symbol Parameter Conditions Min Max Units

VCC Supply voltage Measured at VCC

[1] 3.10 5.25 V

TAVCC = 5.0 V, unless otherwise stated.

Production tested operating temperature

range

[1]

–40

+130

°C

Operating temperature range

Guaranteed operating temperature range [1] –40 +130 °C

VCC_RAMP Supply power on ramp rate [2] [3] 0.00001 10 V/μs

[1] Parameter tested 100 % at final test.

[2] Functionality verified by modeling, simulation and/or design verification..

[3] Parameter verified by parametric and functional validation.

10 Static characteristics

Table 7. Static characteristics

VCC_min ≤ (VCC - VSS) ≤ VCC_max, TL ≤ TA ≤ TH, ΔT ≤ 25 °C/min, unless otherwise specified.

Symbol Parameter Condition Min Typ Max Units

Supply and I/O

IqQuiescent supply current VCC = 5.0 V [1] — — 8.0 mA

Temperature sensor signal chain

VOH_ANA Output high voltage ANALOG_OUT,

ILoad = –100 µA

[1] Vcc – 0.2 — — V

VOL_ANA Output low voltage ANALOG_OUT,

ILoad = 100 µA

[1] — — 0.2 V

VOUT_3dB Analog output low-pass filter frequency

typical value

–3 dB, 2-pole [2] 8 — 20 kHz

VOUT_3dBTol Analog output low-pass filter frequency

typical tolerance

–3 dB, 2-pole [2] –5 — 5 %

Absolute pressure sensor signal chain

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

12 / 22

Symbol Parameter Condition Min Typ Max Units

PABS Absolute pressure range [1] [3] 20 — 550 kPa

PSENS Absolute pressure output sensitivity VCC = 5.0 V.

Tested at PA = 300 kPa

and 400 kPa

[2] — 8.68 — mV/k

PACC_HiT Absolute pressure accuracy VCC = 5.0 V.

85 °C < TA ≤ 130 °C

[4] –3 — +3 %FSS

PACC_Typ Absolute pressure accuracy VCC = 5.0 V.

0° C ≤ TA ≤ 85 °C

[4] –2 — +2 %FSS

PACC_LoT Absolute pressure accuracy VCC = 5.0 V.

–40 °C ≤ TA< 0 °C

[4] –3 — +3 %FSS

POFF Absolute pressure analog offset At pressure span extremes

VCC = 5.0 V.

[4] — 0.2 — V

VFSS Output voltage span At pressure span extremes

VCC = 5.0 V.

[5] — 4.6 — V

[1] Parameter verified by pass/fail testing at final test.

[2] Functionality verified by modeling, simulation and/or design verification.

[3] Parameter verified by characterization.

[4] Parameter tested 100 % at final test.

[5] Parameter verified by functional evaluation.

11 Dynamic characteristics

Table 8. Dynamic characteristics

VCC_min ≤ (VCC – VSS) ≤ VCC_max, TL ≤ TA ≤ TH, ΔT ≤ 25 °C/min, unless otherwise specified.

Symbol Parameter Condition Min Typ Max Units

Signal chain

tSigChain Signal chain sample time [1] — 48 — μs

fc0 Cutoff frequency, filter

option #0, 4-pole

[1] [2] — 800 — Hz

fc1

PABS low-pass filter

Cutoff frequency, filter

option #1, 4-pole

[1] [2] — 1000 — Hz

tSigDelay Signal delay (sinc filter to output delay,

excluding the PABS LPF)

[1] — — 128 μs

fPackage Package resonance frequency [1] 27.1 — — kHz

[1] Functionality verified by modeling, simulation and/or design verification.

[2] Parameter verified by functional evaluation.

12 Media compatibility—pressure sensors only

For more information regarding media compatibility information, contact your local sales

representative.

13 Application information

Note: A gel is used to provide media protection against corrosive elements which

may otherwise damage metal bond wires and/or IC surfaces. Highly pressurized gas

molecules may permeate through the gel and then occupy boundaries between material

surfaces within the sensor package. When decompression occurs, the gas molecules

may collect, form bubbles and possibly result in delamination of the gel from the material

it protects. If a bubble is located on the pressure transducer surface or on the bond wires,

the sensor measurement may shift from its calibrated transfer function. In some cases,

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

13 / 22

these temporary shifts could be outside the tolerances listed in the data sheet. In rare

cases, the bubble may bend the bond wires and result in a permanent shift.

aaa-029731

VCC

VCC TEST (pin3)

VSS

C2 R1

VCC

ADCREF+

ADC_IN

ADC

ANALOG_OUT

FXPS7xxxA4

ADCREF-

Figure 12. Application diagram of FXPS7550A4

Table 9. External component recommendations

Name Type Description Purpose

C1 Ceramic 0.1 μF, 10 %, 10 V minimum, X7R VCC power supply decoupling

C2 Ceramic 47 pF, 10 %, 10 V minimum, X7R Analog output filtering

R1 General purpose 51 kΩ, 5 %, 200 PPM Analog output pull-down resistor

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

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14 Package outline

Figure 13. Package outline HQFN (SOT1573-1)

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

15 / 22

Figure 14. Package outline detail HQFN (SOT1573-1)

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

16 / 22

Figure 15. Package outline note HQFN (SOT1573-1)

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

17 / 22

15 References

[1] Assembly guidelines for quad flat no-lead (HQFN) and small outline no-lead (SON) packages — NXP

Application Note (AN) 1902, Rev. 8.0 - 6 February 2018, 51 pages,

https://www.nxp.com/docs/en/application-note/AN1902.pdf

[2] AEC documents on Automotive Electronics Council Component Technical Committee’s site:

http://www.aecouncil.com/AECDocuments.html

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

18 / 22

16 Revision history

Table 10. Revision history

Document ID Release date Data sheet status Change notice Supercedes

FXPS7550A4 v.4.1 20190529 Product data sheet - FXPS7550A4 v.4

Modifications •Section 3.1: Added application "Liquid propane gas (LPG) or compressed natural gas (CNG)

engine management."

•Section 13, Figure 12: Revised the symbol for R1 from a capacitor symbol to a resistor symbol.

FXPS7550A4 v.4 20190507 Product data sheet - FXPS7550A4 v.3

FXPS7550A4 v.3 20190506 Preliminary data sheet - FXPS7550A4 v.2

FXPS7550A4 v.2 20190408 Preliminary data sheet - FXPS7550A4 v.1

FXPS7550A4 v.1 20180913 Preliminary data sheet - -

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

19 / 22

17 Legal information

17.1 Data sheet status

Document status[1][2] Product status[3] Definition

Objective [short] data sheet Development This document contains data from the objective specification for product

development.

Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.

Product [short] data sheet Production This document contains the product specification.

[1] Please consult the most recently issued document before initiating or completing a design.

[2] The term 'short data sheet' is explained in section "Definitions".

[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple

devices. The latest product status information is available on the Internet at URL http://www.nxp.com.

17.2 Definitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modifications or additions. NXP Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences

of use of such information.

Short data sheet — A short data sheet is an extract from a full data sheet

with the same product type number(s) and title. A short data sheet is

intended for quick reference only and should not be relied upon to contain

detailed and full information. For detailed and full information see the

relevant full data sheet, which is available on request via the local NXP

Semiconductors sales office. In case of any inconsistency or conflict with the

short data sheet, the full data sheet shall prevail.

Product specification — The information and data provided in a Product

data sheet shall define the specification of the product as agreed between

NXP Semiconductors and its customer, unless NXP Semiconductors and

customer have explicitly agreed otherwise in writing. In no event however,

shall an agreement be valid in which the NXP Semiconductors product

is deemed to offer functions and qualities beyond those described in the

Product data sheet.

17.3 Disclaimers

Limited warranty and liability — Information in this document is believed

to be accurate and reliable. However, NXP Semiconductors does not

give any representations or warranties, expressed or implied, as to the

accuracy or completeness of such information and shall have no liability

for the consequences of use of such information. NXP Semiconductors

takes no responsibility for the content in this document if provided by an

information source outside of NXP Semiconductors. In no event shall NXP

Semiconductors be liable for any indirect, incidental, punitive, special or

consequential damages (including - without limitation - lost profits, lost

savings, business interruption, costs related to the removal or replacement

of any products or rework charges) whether or not such damages are based

on tort (including negligence), warranty, breach of contract or any other

legal theory. Notwithstanding any damages that customer might incur for

any reason whatsoever, NXP Semiconductors’ aggregate and cumulative

liability towards customer for the products described herein shall be limited

in accordance with the Terms and conditions of commercial sale of NXP

Semiconductors.

Right to make changes — NXP Semiconductors reserves the right to

make changes to information published in this document, including without

limitation specifications and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. NXP Semiconductors makes

no representation or warranty that such applications will be suitable

for the specified use without further testing or modification. Customers

are responsible for the design and operation of their applications and

products using NXP Semiconductors products, and NXP Semiconductors

accepts no liability for any assistance with applications or customer product

design. It is customer’s sole responsibility to determine whether the NXP

Semiconductors product is suitable and fit for the customer’s applications

and products planned, as well as for the planned application and use of

customer’s third party customer(s). Customers should provide appropriate

design and operating safeguards to minimize the risks associated with

their applications and products. NXP Semiconductors does not accept any

liability related to any default, damage, costs or problem which is based

on any weakness or default in the customer’s applications or products, or

the application or use by customer’s third party customer(s). Customer is

responsible for doing all necessary testing for the customer’s applications

and products using NXP Semiconductors products in order to avoid a

default of the applications and the products or of the application or use by

customer’s third party customer(s). NXP does not accept any liability in this

respect.

Limiting values — Stress above one or more limiting values (as defined in

the Absolute Maximum Ratings System of IEC 60134) will cause permanent

damage to the device. Limiting values are stress ratings only and (proper)

operation of the device at these or any other conditions above those

given in the Recommended operating conditions section (if present) or the

Characteristics sections of this document is not warranted. Constant or

repeated exposure to limiting values will permanently and irreversibly affect

the quality and reliability of the device.

Terms and conditions of commercial sale — NXP Semiconductors

products are sold subject to the general terms and conditions of commercial

sale, as published at http://www.nxp.com/profile/terms, unless otherwise

agreed in a valid written individual agreement. In case an individual

agreement is concluded only the terms and conditions of the respective

agreement shall apply. NXP Semiconductors hereby expressly objects to

applying the customer’s general terms and conditions with regard to the

purchase of NXP Semiconductors products by customer.

No offer to sell or license — Nothing in this document may be interpreted

or construed as an offer to sell products that is open for acceptance or

the grant, conveyance or implication of any license under any copyrights,

patents or other industrial or intellectual property rights.

Suitability for use in automotive applications — This NXP

Semiconductors product has been qualified for use in automotive

applications. Unless otherwise agreed in writing, the product is not designed,

authorized or warranted to be suitable for use in life support, life-critical or

safety-critical systems or equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

20 / 22

to result in personal injury, death or severe property or environmental

damage. NXP Semiconductors and its suppliers accept no liability for

inclusion and/or use of NXP Semiconductors products in such equipment or

applications and therefore such inclusion and/or use is at the customer's own

risk.

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from competent authorities.

Translations — A non-English (translated) version of a document is for

reference only. The English version shall prevail in case of any discrepancy

between the translated and English versions.

17.4 Trademarks

Notice: All referenced brands, product names, service names and

trademarks are the property of their respective owners.

NXP — is a trademark of NXP B.V.

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Product data sheet Rev. 4.1 — 29 May 2019

21 / 22

Tables

Tab. 1. Ordering information ..........................................2

Tab. 2. Ordering options ................................................2

Tab. 3. Pin description ...................................................4

Tab. 4. IIR low pass filter coefficients ............................7

Tab. 5. Maximum ratings ............................................. 10

Tab. 6. Electrical characteristics—supply and I/O ....... 11

Tab. 7. Static characteristics ....................................... 11

Tab. 8. Dynamic characteristics .................................. 12

Tab. 9. External component recommendations ........... 13

Tab. 10. Revision history ...............................................18

Figures

Fig. 1. Block diagram of FXPS7550A4 .........................3

Fig. 2. Pin configuration for 16-pin HQFN .................... 3

Fig. 3. Voltage regulation and monitoring .....................5

Fig. 4. ΣΔ converter block diagram .............................. 6

Fig. 5. Signal chain diagram ........................................ 6

Fig. 6. Sinc filter response ........................................... 7

Fig. 7. 800 Hz, 4-pole, low-pass filter response ........... 8

Fig. 8. 800 Hz, 4-pole output signal delay ....................8

Fig. 9. 1000 Hz, 4-pole, low-pass filter response ......... 9

Fig. 10. 1000 Hz, 4-pole output signal delay ..................9

Fig. 11. Analog output transfer function ....................... 10

Fig. 12. Application diagram of FXPS7550A4 .............. 13

Fig. 13. Package outline HQFN (SOT1573-1) ..............14

Fig. 14. Package outline detail HQFN (SOT1573-1) .... 15

Fig. 15. Package outline note HQFN (SOT1573-1) ...... 16

NXP Semiconductors FXPS7550A4

Analog absolute pressure sensor, 20 to 550 kPa

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section 'Legal information'.

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 29 May 2019

Document identifier: FXPS7550A4

Contents

1 General description ............................................ 1

2 Features and benefits .........................................1

3 Applications .........................................................1

3.1 Automotive ......................................................... 1

3.2 Industrial ............................................................ 2

3.3 Medical/Consumer ............................................. 2

4 Ordering information .......................................... 2

4.1 Ordering options ................................................ 2

5 Block diagram ..................................................... 3

6 Pinning information ............................................ 3

6.1 Pinning ............................................................... 3

6.2 Pin description ................................................... 4

7 Functional description ........................................4

7.1 Voltage regulators ............................................. 4

7.2 Pressure sensor signal path ..............................5

7.2.1 ΣΔ converter ...................................................... 5

7.2.2 Digital signal processor (DSP) ...........................6

7.2.2.1 Decimation sinc filter ......................................... 6

7.2.2.2 Signal trim and compensation ........................... 7

7.2.2.3 Low-pass filter ................................................... 7

7.3 Analog output function .......................................9

7.3.1 Analog output signal chain ................................ 9

7.3.2 Analog output transfer function ........................10

8 Maximum ratings ...............................................10

9 Operating range ................................................ 11

10 Static characteristics ........................................ 11

11 Dynamic characteristics ...................................12

12 Media compatibility—pressure sensors

only ..................................................................... 12

13 Application information ....................................12

14 Package outline .................................................14

15 References ......................................................... 17

16 Revision history ................................................ 18

17 Legal information ..............................................19