Evaluates: DS8500
DS8500 Evaluation Kit
General Description
The DS8500 evaluation kit (EV kit) provides a conve-
nient platform to evaluate the DS8500 HART® modem.
It allows quick evaluation through a demonstration mode
and in-depth evaluation using HART Communication
Foundation (a part of FieldComm Group) tools.
EV Kit Contents
●DS8500 EV Kit Board
●Micro-USB Cable
Benets and Features
●The EV Kit Provides Fast and Simple Evaluation by
Providing a Total HART Communications Chain on
Board
●Example HART Master and Field Device Circuits
Demonstrate Usage in the Two Most Common HART
Connection Configurations
●HART Registered Modem IC
●On-Board Isolated 4mA–20mA Communications Loop
●MAXQ622 USB Microcontroller with Demo Firmware
●External Connections Allow for Advanced Evaluation
of the DS8500 in Other Configurations
19-5641; Rev 1; 9/15
Ordering Information appears at end of data sheet.
HART and HART Registered are registered trademarks of the
HART Communication Foundation Corp.
Figure 1. USB Connection and READY LEDs
Maxim Integrated
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Evaluates: DS8500
DS8500 Evaluation Kit
Quick Start
The DS8500 EV kit comes with demonstration firmware
already loaded.
1) Download and install the DS8500 EVKIT Software
GUI at www.maximintegrated.com/evkitsoftware.
2) Use the included Micro-USB cable to connect and
power the EV kit as shown in Figure 1.
3) Wait until the READY LEDs (circled in Figure 1) light
after the board has nished USB enumeration. This
can take several seconds.
4) Start the DS8500 EVKIT GUI from the Start menu
by selecting Maxim Integrated | DS8500 | DS8500
Evaluation Kit. Figure 2 shows the demo GUI.
It automatically nds the USB-connected EV kit.
5) Simply type messages from the Master or Field
Device window and press the Send button to
transmit and receive modulated data over the
on-board 4–20mA current loop.
6) Observe the ACTIVE LEDs lighting while transmitting
and receiving.
Detailed Description of Hardware
Users must also use the DS8500 IC data sheet in con-
junction with this EV kit data sheet.
Power Supply
The EV kit uses USB power for all on-board devices.
On-Board 4–20mA Current Loop
The current loop is isolated from board ground and
power allowing communications between Master and
Field Device, both implemented by serial ports on the
MAXQ622. This common connection necessitates use
of a fully isolated 4–20mA loop, which is very sensitive
to ground loops, thus direct probing of the on-board loop
is strongly discouraged and could damage the EV kit.
Note that this is a nontypical configuration specifically
designed for demonstration purposes. In typical installa-
tions, Master and Field Device are separately located,
with the Field Device floating, often powered by loop
current.
Figure 2. DS8500 EV Kit Demo GUI
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Evaluates: DS8500
DS8500 Evaluation Kit
Interface Ports
Jumpers JP2–JP5 provide direct access to the serial
control signals for the Master side of the HART loop.
Jumpers JP8–JP11 provide direct access to the serial
control signals for the Field Device side of the HART
loop. These allow connection to an embedded microcon-
troller or computer running a HART stack via 3.3V TTL
serial UART. See Table 1 and the Advanced Evaluation
section for more details.
Each DS8500 exposes FSK_OUT and FSK_IN signals
via jumper for probing purposes (Table 2).
Jumper Functions
The DS8500 EV kit is equipped with 17 jumpers for
disconnecting pins and modifying the EV kit features.
Table 3 details the jumpers not previously covered.
External Connectors
The EV kit has three terminal blocks for easy loop/wire
connections. See Table 4.
Advanced Evaluation
The DS8500 EV kit can communicate directly with actual
HART devices or software-emulated devices. The on-
board MAXQ622 is only for demonstration purposes
Table 1. Master and Field Device Control Signals
Table 2. FSK Probe and Disconnect Jumpers
Note: Serial signals are 3.3V TTL.
PORT PIN PIN NAME PIN TYPE DESCRIPTION
JP2 HRXD_M Output Digital serial data output from MASTER DS8500 (DOUT)
JP3 HOCD_M Output Carrier detect output from MASTER DS8500
JP4 HTXD_M Input Digital serial data input to MASTER DS8500 (DIN)
JP5 HRTS_M Input Active-low request to send signal for MASTER DS8500
JP8 HRXD_F Output Digital serial data output from FIELD DEVICE DS8500 (DOUT)
JP9 HOCD_F Output Carrier detect output from FIELD DEVICE DS8500
JP10 HTXD_F Input Digital serial data input to FIELD DEVICE DS8500 (DIN)
JP11 HRTS_F Input Active-low request to send signal for FIELD DEVICE DS8500
JUMPER NAME TYPE DESCRIPTION
JP6 FSK_IN_M Input MASTER side incoming FSK-modulated serial signal
JP7 RAW_FSK_M Output MASTER side outgoing FSK-modulated serial signal
JP12 FSK_IN_F Input FIELD DEVICE side incoming FSK-modulated serial signal
JP13 RAW_FSK_F Output FIELD DEVICE side outgoing FSK-modulated serial signal
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Evaluates: DS8500
DS8500 Evaluation Kit
(USB interface) and does not implement a HART software
stack. The serial UART data and control pins are exposed
via jumpers as detailed in Table 1. They allow a hardware
serial port on a PC or laptop to transmit and receive
modulated signals. Note that these serial pins expect TTL
level signals (3.3V), not RS-232 level, so a serial level
shifter board is typically required for communications.
The following examples detail two evaluation setups.
Other configurations are possible, including emulating
both simultaneously, or connection to an actual Field
Device. However, these are beyond the scope of this doc-
ument. Note: The following configurations require hard-
ware and software tools available from the FieldComm
Group or other sources and are not included with the
DS8500 EV kit.
Emulated HART Field Device
To use the DS8500 EV kit as a Field Device interface,
follow the setup detailed in Figure 3, using the on-board
24V loop power supply and load resistor. Simply connect
a personal computer running HART master software,
(e.g., HCF_KIT_180) and a HART serial modem (e.g.,
HCF_TOOL-35, available with the Physical Layer Test Kit
HCF_KIT-116). The reference modem’s loop connections
attach across the Field Device as shown. Verify that the
jumpers (J7 and J9) remain in place, even with the loop
connections attached.
Another personal computer simulates the behavior of an
actual field device by running the XMTR MV tool (HCF_
TOOL-039). Remove jumpers JP8–JP11 and connect the
serial signals to the computer via a RS-232 level shifter.
To test, launch the XMTR MV program, then start the
Master software and observe communications.
Table 3. Jumper Settings
Table 4. External Connectors
*Default position.
JUMPER SETTING EFFECT
JP1 (1-2) Closed* Powers the 4–20mA loop from on-board power
Open Disconnects 4–20mA loop from on-board power
JP1 (2-3) Closed Connect external loop power from connector J2
Open* Disconnects external loop power from connector J2
J4 Closed* Connects loop power to master device
Open Isolates loop power from master device
J5 Closed* Connect master to eld device via loop
Open Isolates master from eld device via loop
J7 Closed* Connects eld device to master via loop
Open Isolates eld device from master via loop
J9 Closed* Connects eld device to loop return
Open Isolates eld device from loop return
JP14 Closed* Connects VBUS power (5V) to loop 24V power supply
Open Disconnects power from loop supply for noise reduction
CONNECTOR PURPOSE
J2 Power the 4–20mA loop from an external galvanic isolated supply or battery
J5 Wire connection interface to MASTER
J8 Wire connection interface to FIELD DEVICE
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Evaluates: DS8500
DS8500 Evaluation Kit
Figure 3. Setup for Emulated Field Device Evaluation
JP2 RXD M
JP3 OCD M
JP4 TXD M
JP5 RTS M
RS232
LEVEL
SHIFTER
RXD F JP8
OCD F JP9
TXD F JP10
RTS F JP11
MASTER
250Ω
J4
J6
+ -
24V
FIELD
DEVICE
J9
J7
USB
REFERENCE
MODEM
HCF_TOOL-35
PC/LAPTOP
FIELD DEVICE
XMTR MV
HCF_TOOL-039
PC/LAPTOP
MASTER
HCF_KIT_180
DS8500 EVKIT BOARD
Maxim Integrated
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Evaluates: DS8500
DS8500 Evaluation Kit
Emulated HART Primary/Secondary Master
To use the DS8500 EV kit as a Master or Secondary
Master, follow the setup detailed in Figure 4. This exam-
ple does not require loop power so completely remove
jumpers J4 and J6 to isolate the Master side of the EV kit
from the on-board loop. Remove jumpers JP2–JP5 and
connect the serial signals to the computer via a RS-232
level shifter. This computer runs HART master software
(e.g., HCF_KIT_180).
Another personal computer simulates the behavior of the
Field Device by running the XMTR MV tool (HCF_TOOL-
039) and using a HART serial modem (e.g., HCF_TOOL-
35, available with the Physical Layer Test Kit HCF_KIT-
116). The reference modem’s loop connections attach
across the load resistor as shown in Figure 4.
To test, launch the XMTR MV program, then start the
Master software and observe communications.
Figure 4. Setup for Emulated Master Evaluation
JP2 RXD M
JP3 OCD M
JP4 TXD M
JP5 RTS M
RS232
LEVEL
SHIFTER
RXD F JP8
OCD F JP9
TXD F JP10
RTS F JP11
MASTER
250Ω
J4
J6
+ -
24V
FIELD
DEVICE
J9
J7
USB
REFERENCE
MODEM
HCF_TOOL-35
DS8500 EVKIT BOARD
PC/LAPTOP
MASTER
HCF_KIT_180
PC/LAPTOP
FIELD DEVICE
XMTR MV
HCF_TOOL-039
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Evaluates: DS8500
DS8500 Evaluation Kit
#Denotes RoHS compliant.
Ordering InformationComponent List, Schematics, and PCB
Layout
See the following links for component list, PCB layout,
and schematics:
• DS8500-KIT BOM
• DS8500-KIT schematics
• DS8500-KIT PCB layout
PART TYPE
DS8500-KIT# EV Kit
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2015 Maxim Integrated Products, Inc.
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Evaluates: DS8500
DS8500 Evaluation Kit
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 11/10 Initial release —
1 9/15 Rewrote data sheet to include GUI and jumper descriptions and settings 1–8
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Bill of Materials (BOM) (Rev 1; 6/15)
Item Number Quantity Part Reference Value BOM_Description Manufacturer_PN Vendor_PN Vendor PKG_Size
1 4 BMP1 BMP2 BMP3 BMP4 Bumper BUMPER CYLIN 0.375" DIA BLK SJ61A4 SJ5750-0-ND Digi-Key 0.375" Dia x 0.311" H
2 2 C1 C2 10uF CAP CER 10uF 10V 10% X7R 0805 GRM21BR71A106KE51L 490-3905-1-ND Digi-Key 0805
3 8 C3 C13 C15 C17 C19 C35 C36 C50 1uF CAP CER 1uF 10V 20% X5R 0603 GRM188R61A105MA61D 490-1544-1-ND Digi-Key 0603
421
C5 C7 C11 C12 C14 C16 C18 C20 C24
C25 C26 C27 C34 C37 C41 C42 C43 C44
C47 C48 C51
100nF
CAP CER 0.1uF 16V 10% X7R 0603 C0603C104K4RACTU 399-1096-1-ND Digi-Key 0603
5 2 C9 C10 18pF CAP CER 18PF 50V 5% NP0 0402 GRM1555C1H180JA01D 490-5858-1-ND Digi-Key 0402
6 3 C21 C38 C54 2.2nF CAP CER 2200PF 50V 5% NP0 0805 GRM2165C1H222JA01D 490-1628-1-ND Digi-Key 0805
7 2 C22 C39 10nF CAP CER 10000PF 50V 5% NP0 0805 GRM2195C1H103JA01D 490-1642-1-ND Digi-Key 0805
8 2 C23 C40 1uF CAP CER 1uF 16V 10% X7R 0603 GCM188R71C105KA64D 490-5241-1-ND Digi-Key 0603
9 4 C28 C29 C45 C46 15pF CAP CER 15PF 50V 5% NP0 0603 GRM1885C1H150JA01D 490-1407-1-ND Digi-Key 0603
10 4C30 C32 C52 C53 33nF CAP CER 0.033UF 10V 10% X7R 0603 C0603C333K8RACTU 399-9070-1-ND Digi-Key 0603
11 1C31 2.2uF CAP CER 2.2uF 10V 10% X5R 0603 C0603C225K8PACTU 399-4911-1-ND Digi-Key 0603
12 1C33 2.2uF CAP CER 2.2UF 50V 10% X7R 1206 GRM31CR71H225KA88L 490-3367-1-ND Digi-Key 1206
13 1C49 1nF CAP CER 1nF 50V 5% NP0 0603 GRM1885C1H102JA01D 490-1451-1-ND Digi-Key 0603
14 1C55 22uF CAP ALUM 22UF 50V 20% SMD RPS1H220MCN1GS 493-6648-1-ND Digi-Key Alum 8mm Dia (Case E)
15 1C56 1uF CAP CER 1UF 50V 10% X7R 1206 C3216X7R1H105K160AB 445-1423-1-ND Digi-Key 1206
16 1C57 100nF CAP CER 0.1UF 50V 10% X7R 0603 C0603C104K5RACTU 399-5089-1-ND Digi-Key 0603
17 1
C59 47uF CAP ALUM 47UF 6.3V 20% SMD 5mm Dia PCS0J470MCL1GS 493-3966-1-ND Digi-Key Alum 5mm Dia SMD
18 1D1 SMF5.0A-TP TVS 200W 5V UNIDIR SOD-123FL SMF5.0A-TP SMF5.0A-TPMSCT-ND Digi-Key SOD-123
19 3D2 D3 D5 GRN LED 565NM WTR CLR GREEN 1206 SMD SML-LX1206GC-TR 67-1357-1-ND Digi-Key 1206
20 2D4 D6 YEL LED ALINGAP YELLOW CLR 1206 SMD SML-LX1206SYC-TR 67-1699-1-ND Digi-Key 1206
21 2D7 D9 SMCJ36CA TVS DIODE 36VWM 58.1VC SMC SMCJ36CA SMCJ36CALFCT-ND Digi-Key SMC (DO-214AB)
22 1D8 1N5819HW-7-F DIODE SCHOTTKY 40V 1A SOD123 1N5819HW-7-F 1N5819HW-FDICT-ND Digi-Key SOD-123
23 1F1 350mA FUSE PTC RESET 350MA SMD 0603 MF-FSMF035X-2 MF-FSMF035X-2CT-ND Digi-Key 0603
24 1H1 DNI DNI MTG 125DRL 300PAD MTG 125DRL 300PAD
25 1H2 DNI DNI MTG 125DRL 300PAD MTG 125DRL 300PAD
26 1H3 DNI DNI MTG 125DRL 300PAD MTG 125DRL 300PAD
27 1H4 DNI DNI MTG 125DRL 300PAD MTG 125DRL 300PAD
28 1J1 MICRO USB AB RCPT RA CONN RCPT MICRO USB AB R/A SMD 47589-0001 WM17143CT-ND Digi-Key 47589-0001
29 3J2 J5 J8 2P 3.5mm TERM BLOCK 3.5MM VERT 2POS PCB OSTTE020161 ED2635-ND Digi-Key 2P (3.5MM LS)
30 1
J3 DNI
MAXQ_POGO_PIN CBL PLUG-OF-NAILS 10-
PIN
TC2050-IDC-NL TC2050-IDC-NL-ND Digi-Key TC2050-IDC-NL
31 17
J4 J6 J7 J9 JP2 JP3 JP4 JP5 JP6 JP7 JP8
JP9 JP10 JP11 JP12 JP13 JP14
JUMPER
CONN HEADER .100 SINGL STR 2POS (2x1) PEC02SAAN S1012E-02-ND Digi-Key 2x1 (0.1" LS)
32 1JP1 3P JUMPER CONN HEADER .100 SINGL STR 3POS PEC03SAAN S1012E-03-ND Digi-Key 3X1 (0.1" LS)
33 2L1 L5 HZ1206C202R-10 FERRITE CHIP SIGNAL 2000 OHM SMD HZ1206C202R-10 240-2413-1-ND Digi-Key 1206
34 2L2 L3 100uH IND 100UH 0.16A MINI DRUM SMD 82104C 811-2479-1-ND Digi-Key 8200 Series
35 1L4 6.8uH FIXED IND 6.8UH 640MA 270 MOHM 82682C 811-2472-1-ND Digi-Key 8200 Series
36 1PCB1 PCB
37 1Q1 FDV304P MOSFET P-CH 25V 460MA SOT-23 FDV304P FDV304PCT-ND Digi-Key SOT-23 3P
38 1Q2 TLP3545(F) PHOTOCOUPLER PHOTORELAY 6-DIP TLP3545(F) TLP3545(F)-ND Digi-Key 6P DIP
39 1Q3 NDT014L MOSFET N-CH 60V 2.8A SOT-223 NDT014L NDT014LCT-ND Digi-Key SOT-223
40 1Q4 MMBT3904 TRANSISTOR GP NPN AMP SOT-23 MMBT3904 MMBT3904FSCT-ND Digi-Key SOT-23-3
41 1R1 681 RES 681 OHM 1/10W 1% 0603 SMD ERJ-3EKF6810V P681HCT-ND Digi-Key 0603
42 4R2 R3 R4 R5 150 RES 150 OHM 1/10W 1% 0603 SMD ERJ-3EKF1500V P150HCT-ND Digi-Key 0603
43 4R6 R13 R18 R20 100K RES 100K OHM 1/10W 1% 0603 SMD ERJ-3EKF1003V P100KHCT-ND Digi-Key 0603
44 2R7 R21 1.58K RES 1.58K OHM 1/10W 1% 0603 SMD ERJ-3EKF1581V P1.58KHCT-ND Digi-Key 0603
45 2R8 R23 221K RES 221K OHM 1/10W 1% 0603 SMD ERJ-3EKF2213V P221KHCT-ND Digi-Key 0603
46 2R9 R22 301K RES 301K OHM 1/10W 1% 0603 SMD ERJ-3EKF3013V P301KHCT-ND Digi-Key 0603
47 1R10 49.9 RES 49.9 OHM 1/10W 1% 0603 SMD ERJ-3EKF49R9V P49.9HCT-ND Digi-Key 0603
48 2R11 R15 10K RES 10K OHM 1/10W 1% 0603 SMD ERJ-3EKF1002V P10.0KHCT-ND Digi-Key 0603
49 1R12 12.4K RES 12.4K OHM 1/10W 1% 0603 SMD ERJ-3EKF1242V P12.4KHCT-ND Digi-Key 0603
50 1R14 249 RES 249 OHM 1W 1% 2512 SMD MCR100JZHF2490 RHM249BBCT-ND Digi-Key 2512
51 1R16 10 RES 10 OHM 1/10W 1% 0603 SMD ERJ-3EKF10R0V P10.0HCT-ND Digi-Key 0603
52 4R17 R19 R24 R32 1K RES 1K OHM 1/10W 1% 0603 SMD ERJ-3EKF1001V P1.00KHCT-ND Digi-Key 0603
53 5R25 R26 R27 R28 R29 1.24M RES 1.24M OHM 1/10W 1% 0603 SMD CRCW06031M24FKEA 541-1.24MHCT-ND Digi-Key 0603
54 2R30 R33 300 RES 300 OHM 1/10W 1% 0603 SMD ERJ-3EKF3000V P300HCT-ND Digi-Key 0603
55 1R31 511K RES 511K OHM 1/10W 1% 0603 SMD ERJ-3EKF5113V P511KHCT-ND Digi-Key 0603
56 1R34 24.3 RES 24.3 OHM 1/10W 1% 0603 SMD ERJ-3EKF24R3V P24.3HCT-ND Digi-Key 0603
57 1R35 100 RES 100 OHM 1/10W 1% 0603 SMD ERJ-3EKF1000V P100HCT-ND Digi-Key 0603
58 1R36 20K RES 20K OHM 1/10W .1% 0603 SMD ERA-3AEB203V P20KDBCT-ND Digi-Key 0603
59 1R37 10 RES SMD 10 OHM 0.1% 1/8W 1206 CRT1206-BY-10R0ELF CRT1206-BY-10R0ELFCT-ND Digi-Key 1206
60 1R38 10K RES SMD 10K OHM 1% 1/4W 1206 ERJ-8ENF1002V P10.0KFCT-ND Digi-Key 1206
61 17
SJ1 SJ2 SJ3 SJ4 SJ5 SJ6 SJ7 SJ8 SJ9 SJ10
SJ11 SJ12 SJ13 SJ14 SJ15 SJ16 SJ17
SHUNT
CONN JUMPER SHORTING TIN STC02SYAN S9000-ND Digi-Key BLK Shunt
62 1SW2 DIP SW 4POS SWITCH DIP 4POS SEALED GOLD 3-5435640-5 450-1404-ND Digi-Key 8P DIP (0.1" LS)
63 1T1 MET-26 TRANSFORMER 1KCT:1KCT 3.0MADC MET-26 838-MET-26 Mouser MET-26
64 3TP1 TP3 TP4 RED TEST POINT PC COMPACT .063"D RED 5005 5005K-ND Digi-Key Compact
65 6TP2 TP5 TP6 TP7 TP8 TP9 BLK TEST POINT PC COMPACT .063"D BLK 5006 5006K-ND Digi-Key Compact
66 1U1 MAX1806EUA33+ IC REG LDO 3.3V/ADJ 0.5A 8UMAX MAX1806EUA33+ MAX1806EUA33+-ND Digi-Key 8P Power-Umax
67 1U2 NME0524SC CONV DC/DC 1W 5VIN 24V SIP SGL NME0524SC 811-1481-5-ND Digi-Key 4-SIP Module
68 1U3 MAXQ622G-0000+ IC MCU 16BIT 128KB IR MOD 64LQFP MAXQ622G-0000+ MAXQ622G-0000+-ND Digi-Key 64P LQFP
69 1U4 MAX3207EAUT+T ESD PROT DIFF SOT23-6 MAX3207EAUT+T MAX3207EAUT+TCT-ND Digi-Key 6P SOT-23
70 2U5 U7 DS8500-JND+ IC MODEM HART SGL 3.6V 20-TQFN DS8500-JND+ DS8500-JND+-ND Digi-Key 20P 5x5 TQFN
71 1U6 MAX4166EUA+ IC OPAMP GP 5MHZ RRO 8UMAX MAX4166EUA+ MAX4166EUA+-ND Digi-Key 8P UMAX
72 1U8 MAX6133A25+ IC VREF SERIES 2.5V 8UMAX MAX6133A25+ MAX6133A25+-ND Digi-Key 8P UMAX
73 1U9 MAX9620AXK+T IC OPAMP CHOPPER 1.5MHZ SC70-5 MAX9620AXK+T MAX9620AXK+TCT-ND Digi-Key SC70 5P
74 1Y1 12MHz CRYSTAL 12MHZ 18PF SMD ABM3-12.000MHZ-D2Y-T 535-10634-1-ND Digi-Key 5x3.2 ABM3
75 2Y2 Y3 3.6864MHz CRYSTAL 3.6864MHZ 18PF THRU ECS-36-18-4X X1042-ND Digi-Key HC49/US
MAXQ622 PROGRAMMING JTAG PORT
750ma trip
Yellow - Field Activity
GALVANICALLY ISOLATED DC-DC CONVERTER
EVKIT POWER IN (USB VBUS) PRIMARY VOLTAGE REGULATOR
ESD PROTECTION Yellow - Master Activity
Green - Master Ready
Green - Field Ready
+
-
MOUNTING HOLES & BUMPERS
Add jumper to U2 power inlet. Simplify output filter.
MDM
MDP
+24VDC
3V3
LOOP_RET
3V3 3V3
3V3
LOOP_RET
+24VDC_LOOP_PWR
3V3
3V3
3V3
MP24
MP26
MP27
MRST_N
MP25
MRST_N
MP24
MP25
MP26
MP27
HRXD_F
HTXD_M
HTXD_F
HRXD_M
HOCD_M
HRTS_F
HRTS_M
HOCD_F
TP2
GND
Black
1
D6 YEL
ACTIVE
TP3
+3V3
RED
1
J3
DNI
JTAG
TCK
1GND 10
GND
2TDI 9
TDO
3VCC5 8
VREF
4KEY 7
TMS
5nRST 6
U4
MAX3207EAUT+T
IO1
1
GND
2
NC3
3IO2 4
VCC 5
NC6 6
C19
1uF
R38
10K
D2
GRN
POWER
C11
100nF
F1 350mA
1 2
JP14
DC-DC VIN
12
D3 GRN
READY
D4 YEL
ACTIVE
R3 150
L3 100uH
Bumper
BMP3
C10 18pF
L2 100uH
C2
10uF
L5 HZ1206C202R-10
H3
DNI
1
R4 150
C5
100nF
+C55
22uF
50V
C15
1uF
TP1
VBUS
RED
1
C9 18pF
C13
1uF
+C59
47uF
J2
EXT
LOOP
POWER
1
1
2
2
D1
SMF5.0A-TP
C17
1uF
5V DC 24V DC
NME0524SC
U2
-VIN
1
+VIN
2
-VOUT 3
+VOUT 4
H4
DNI
1
R2 150
H1
DNI
1
C20
100nF
Bumper
BMP2
C57
100nF
50V
L4 6.8uH
C1
10uF
TP5
Black
1
TP4
RED
1
C12
100nF
J1
MICRO USB/POWER
VBUS 1
DM 2
DP 3
ID 4
GND 5
GND_1
6
GND_2
7
GND_3
8
GND_4
9
C7
100nF
C56
1uF
50V
U1
MAX1806EUA33+
IN_1
1
IN_2
2
POK
3
SHDN
4GND 5
SET 6
OUT_2 7
OUT_1 8
EP 9
D5 GRN
READY
R5 150
JP1
LOOP PWR SEL
1
2
3
SJ17
SHUNT
Y1
12MHz
1 2
Bumper
BMP4
L1 HZ1206C202R-10
C14
100nF
Bumper
BMP1
C16
100nF
H2
DNI
1
C3
1uF
C18
100nF
R1
681
MAXQ622G-0000+
U3
IRRX
1
P0.0/IRTXM 2
P0.1/RX0 3
P0.2/TX0 4
P0.3/RX1/SDA 5
P0.4/TX1/SCL 6
P0.5/TBA0/TBA1 7
GND
8
P0.6/TBB0 9
P0.7/TBB1 10
P2.0/MOSI0 11
P2.1/MISO0 12
P2.2/SCLK0 13
P2.3/SSEL0 14
RESET
15
DP
16
GND
17
DM
18
VBUS
19
VDDB
20
VDDIO
21
VDD
22
REG18
23
GND
24
HFXIN
25
HFXOUT
26
P3.0/INT8 27
P3.1/INT9 28
P3.2/INT10 29
P3.3/INT11 30
P3.4/INT12 31
P3.5/INT13 32
P3.6/INT14 33
P3.7/INT15 34
GND
35
N.C._1
36
P5.0/MOSI1
37
P5.1/MISO1
38
P5.2/SCLK1
39
P5.3/SSEL1
40
P2.4/TCK 41
P2.5/TDI 42
P2.6/TMS 43
P2.7/TDO 44
P1.0/INT0 45
N.C._2
46
N.C._3
47
P1.1/INT1 48
P1.2/INT2 49
P1.3/INT3 50
P1.4/INT4 51
P1.5/INT5 52
P1.6/INT6 53
P1.7/INT7 54
P4.0 55
P4.1 56
P4.2 57
P4.3 58
P4.4 59
P4.5 60
P4.6 61
P4.7 62
GND
63
IRTX
64
240Hz HiPass 10.1KHz LoPass
+
-
FSK BUFFER AMP
CAPACITIVE VOLTAGE DIVIDER
TRANSMIT/RECEIVE
OPTICAL RELAY
INVERTING
RELAY DRIVER
ISOLATION TRANSFORMER
FSK BANDPASS FILTER
UART INTERFACE
INPUT REFERENCE
AVDD_MOCD_M
REF_M
FSKI_M
FSKO_M
XMIT_ENABLE_N_M
DVDD
DVDD
MASTER_PLUS
MASTER_MINUS
RAW_FSK_M
3V33V3
3V3
3V3
3V3
3V3
3V3
+24VDC_LOOP_PWR
3V3
HTXD_M
HRXD_M
HOCD_M
HRTS_M
MASTER_FIELD_LOOP
J6
MASTER/FIELD LOOP
12
C23
1uF
R9
301K
SJ7
SHUNT
SJ1
SHUNT
C31 2.2uF
C22
10nF
NPO
SJ4
SHUNT
SJ5
SHUNT
C21 2.2nF
NPO
R15 10K
C32
33nF
C28
15pF
NP0
C24
100nF
PRI
SEC
T1
MET-26
1
2
3 4
5
6
R12 12.4K
G
D
S
Q1
FDV304P
1 2
3
R7 1.58K
R11 10K
JP3
OCD M
1 2
TP7 GND Black
1
R14
249
R LOAD
C33 2.2uF
C37
100nF
U6
MAX4166EUA+
NC1 1
IN-
2IN+
3OUT 6
VCC 7
SHDN
8
VEE
4
NC5 5
R18
100K
C34
100nF
SJ2
SHUNT
C27
100nF
R16 10
R13 100K
C35
1uF
R10 49.9
J5
LOOP MASTER
1
1
2
2
C30
33nF
TP6 GND Black
1
JP4
TXD M
1 2
SJ6
SHUNT
C29
15pF
NP0
SJ8
SHUNT
C26
100nF
Y2
3.6864MHz
1 2
C36
1uF
R19
1K
C25
100nF
JP5
RTS M
1 2
JP2
RXD M
1 2
SJ3
SHUNT
R8 221K
G D
S
D
Q2
TLP3545(F)
1
4
5
6
2
3
D7
SMCJ36CA
U5
DS8500-JND+
DS8500
MASTER
DVDD
1
DVDD
2
DGND
3
RST
4
OCD
5
RTS
6
XTAL1
7
XTAL2
8
DGND
9
XCEN
10
DIN 20
DOUT 19
DGND 18
PIN17 17
DGND 16
AGND 15
FSKIN 14
REF 13
FSKOUT 12
AVDD 11
EP_GND 21
JP7
RAW FSK M
1 2
R6
100K
JP6
FSK IN M
1 2
R17
1K
J4
LOOP POWER
12
240Hz HiPass 10.1KHz LoPass
-
+
UART INTERFACE
FSK BANDPASS FILTER
LOOP CURRENT
LIMITER
REVERSE POLARITY PROTECTION
CURRENT REGULATOR
LOOP SENSE RESISTOR
LIMIT SENSE RESISTOR
ERROR AMPLIFIER
PASS TRANSISTOR
CAPACITIVE VOLTAGE DIVIDER
LOOP FEEDBACK GAIN SET
Rsense 10 ohms
Rfeedback 20K ohms
Loop current = 1mA per 0.5uA summing node current
LOOP CURRENT SELECT
MODULATION GAIN SET
0.511M ohm
loop current = 2mA per 0.5V
VOLTAGE REFERENCE
LOOP CURRENT SET
ALL OFF = 4mA
POS 1 ON = 8mA
POS 1,2 ON = 12mA
POS 1-3 ON = 16mA
POS 1-4 ON = 20mA
AVDD_FLDOCD_FLD
REF_FLD
FSKI_FLD
FSKO_FLD
XMIT_ENABLE_N_FLD
DVDD
DVDD
RAW_FSK_FLD
FIELD_PLUS
FIELD_MINUS
VREF_2V5
3V33V3
3V3
3V3
3V3
LOOP_RET
3V3
HTXD_F
HRXD_F
HOCD_F
HRTS_F
MASTER_FIELD_LOOP
C46
15pF
NP0
R36
20K
0.1%
C54
2.2nF
50V
U9
MAX9620AXK+T
IN-
3
GND
2
IN+
1
VDD 5
OUT 4
C40
1uF
R32 1K
R29
1.24M
TP9 GND Black
1
SJ14
SHUNT
C51 100nF
Y3
3.6864MHz
1 2
C38 2.2nF
NPO
C39
10nF
NPO
SJ16
SHUNT
C47
100nF
B
C
E
Q4
MMBT3904
1
2
3
R28
1.24M
R33
300
SJ10
SHUNT
SJ11
SHUNT
C42
100nF
C48
100nF
C50 1uF
JP11
RTS F
1 2
J7
FIELD/MASTER
12
D9
SMCJ36CA
J8
LOOP FIELD
1
1
2
2
C41
100nF
JP8
RXD F
1 2
C44
100nF
G
D
S
D
Q3
NDT014L
1 3
2
4
C53
33nF
SW2
LOOP CURRENT SET
ALL OFF 4mA
ALL ON 20mA
4mA
4mA
4mA
4mA
1
2
3
4 5
6
7
8
R27
1.24M
R23 221K
R22
301K
U8
MAX6133A25+
NC_1 1
IN
2
NC_3 3
GND
4
I.C._1 5
OUT 6
NC_7 7
I.C._2 8
R20
100K
U7
DS8500-JND+
DS8500
FIELD
DEVICE
DVDD
1
DVDD
2
DGND
3
RST
4
OCD
5
RTS
6
XTAL1
7
XTAL2
8
DGND
9
XCEN
10
DIN 20
DOUT 19
DGND 18
PIN17 17
DGND 16
AGND 15
FSKIN 14
REF 13
FSKOUT 12
AVDD 11
EP_GND 21
D8
1N5819HW-7-F
R26
1.24M
J9
LOOP RETURN
12
TP8 GND Black
1
R31 511K
SJ12
SHUNT
C49 1nF
C43
100nF
JP10
TXD F
1 2
R21 1.58K
R30 300
SJ15
SHUNT
R24 1K
JP13
RAW FSK F
1 2
R25
1.24M
JP9
OCD F
1 2
C52
33nF
JP12
FSK IN F
1 2
R34
24.3
SJ13
SHUNT
SJ9
SHUNT
C45
15pF
NP0
R37
10
0.1%
R35
100
PLACE ANY VENDOR SERIAL NUMBER ASSOCIATED TO PANEL ON BOTTM SIDE OF BOARD.
NOTES: 1. ALL MEASUREMENTS ARE IN INCHES.
2. THE PWB SHALL BE FABRICATED TO IPC-6012, CLASS 2 AND WORKMANSHIP
SHALL CONFORM TO IPC-A-600, CLASS 2, CURRENT REV. DIMENSIONING AND
TOLERANCE OF PRINTED WIRING BOARD SHALL BE PER IPC-D-300 (CURRENT REV).
3. BOARD MATERIAL TO BE MULTI-FUNCTIONAL FR-4 EXPOXY GLASS LIMINATE,
AND SHALL MEET OR EXCEED MIL-P-13949. COLOR - NATURAL.
4. BOARD MATERIAL AND CONSTRUCTION TO BE U.L. APPROVED AND MARKED ON
THE FINISHED BOARD.
5. MINIMUM COPPER WALL THICKNESS OF PLATED-THRU HOLES TO BE.001 INCHES
6. OVERALL BOARD THICKNESS TO BE .062 +/- 10% AND APPLIES AFTER ALL
LAMINATION AND PLATING PROCESSES. MEASURED FROM COPPER TO COPPER.
7. MAX WARP AND TWIST TO BE .01 INCHES PER INCH.
8. BOARD MUST BE ELECTRICALLY TESTED USING THE SUPPLIED IPC-D -356 NETLIST.
9. PLATE ALL EXPOSED AREAS WITH ELECTROLESS IMMERSION GOLD, NICKEL 100 MICROINCHES THK. GOLD 2-6
MICROINCHES THK MIN.
PROCESS NOTES: 1. APPLY LPI SOLDERMASK, BOTH SIDES, OVER BARE COPPER (SMOBC)
COLOR: GREEN
SOLDERMASK SHALL CONFORM TO IPC-SM-840, CLASS H, AND CURRENT REVISION. VIAS SHALL BE TENTED OR
CLEARED BY SOLDERMASK PER ARTWORK. FABRICATION VENDOR IS ALLOWED TO ADJUST SOLDERMASK FEATURES
AS NEEDED AS LONG AS SOLDERMASK DAMS ARE MAINTAINED BETWEEN ALL SMD PADS.
2. SILKSCREEN BOTH SIDES USING LPI SILKSCREEN, COLOR: WHITE.
3.50
H3
H3
1
1
R20
GND
JP12
1 2
R22
R22
1 2
C38
C38
2
1 2
R21
R21
C39
1
TP9
TP9
GND
1
H2H2
BMP3
BMP3
1
2
JP9JP9
2
JP8JP8
2
JP11JP11
2
JP10JP10
2
1 2
U7
U7
TP7
TP7
1 2
R20
1
C41
C41
C42
1
C43
1
2
3
4
5 11
12
13
14
15
1617181920
21
12
FSK IN F
JP12
1 2
R23
R23
1 2
C44
C44
1 2
C40
C40
C52
1
C39
1 2
C47
C47
2
2
C50
1234
U8
1 2
R30
R30
1
C51
C51
Q3
3
Q4
Q4
BMP2
BMP2
1
1
1
1
1
C42
1
C45
DS8500
2
C43
2
C45
1 2
C46
C46
6 7 8 9 10
12
JP13JP13
1 2
R31
R31
C48
1 2
C52
1 2
C53
C53
1 2
R25
R25
1
1
1 2
C48
1
C50
1
5
5678
U8
R37
1 2
R24
R24
1
1
1 2
R33
R33
1 2
R36
R36
1 2
C49
C49
2 3
4
U9
U9
1 2
R32
R32
1 2
R34
R34
1 32
1 2
4
Q3
PCA-
1 2
R1
R1
C A
POWER
D2
D1
OCD F
RXD F
RTS F
TXD F
1 2
Y3
Y3
RAW FSK F
4mA
4mA
2
R26
R26
2
R27
R27
56
1
2
R28
R28
2
R29
R29
3 4
2
R37
1 2
R35
R35
1 2
C54
C54
C A
D8
D8
D2
1 2
C1
C1
2
C A
D1
1
VBUS
1 2
L5
L5
1 2
C11
C11
TP1
TP1
1 2
L1
L1
FIELD
DEVICE
2
2 C A
D6
D6
C A
D5
D5
4mA
4mA
ALL ON 20mA
ALL OFF 4mA
78
SW2
SW2
1 2
LOOP CURRENT SET
A
D9
C
D9
02-19-2015
8
1
F1
F1
1
2
3
4
5
6
7
1
GND
1 2
C3
C3
TP2
TP2
1234
5678
9
U1
U1
12
JP14
JP14
1
R4
1
R5
R5
ACTIVE
READY
R4
TP5
TP5
J9J9
J7J7
FIELD/MASTER
9
1 2
C12
C12
123
46 5
J1
J1
1
+3V3
U4
U4
C5
C13
C14
1 2
C2
C2
TP3
TP3
2
C59
C59
1 2
C5
1 2
L4
L4
1
C7
1
U2
U2
LOOP RETURN
1
122
LOOP FIELD
J8
J8
211
SILKSCREEN TOP
SOLDER MASK TOP
1 OZ. FINISHED COPPER
PREPREG 0.0039"
0.5 OZ. COPPER
CORE 0.047"
0.5 OZ. COPPER
PREPREG 0.0039"
1 OZ. FINISHED COPPER
SOLDER MASK BOTTOM
SILKSCREEN BOTTOM
1
2
3
4
64
U3
5
6
7
8
9
10
11
12
13
14
15
16
1 2
C13
1 2
C17
1 2
C19
1 2
C20
1 2
C18
1 2
C14
17
1
C17
C19
C20
C18
1 2
L2
L2
1 2
C57
C57
2
C7
234
J2
1 2
C56
C56
2
EXT
POWER
LOOP
24V
4.50
MICRO USB/POWER
495051525354555657585960616263
1 2
C16
U3
1 2
C15
C16
1 2
C10
1 2
C9
C9
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
1
C15
1 2
Y1
24V LOOP POWER
2
1
J2
ISOLATED
MUST BE GALVANICALLY
J5
45
46
47
48
33
34
35
36
37
38
39
40
41
42
43
44
C10
C55
Y1
1
L3
C55
JP1JP1
12 3
1 2
R38
R38
LOOP PWR SEL
1
121
J5
1
2 2
1
2
3
4
5 6
7
8
9
10
J3
J3
DS8500 EV KIT
2
L3
ACTIVE
READY
LOOP POWER
TP4
TP4
J4J4
LOOP MASTER
J6J6
MASTER
1 2
R2
1 2
R3
R3
C A
D4
C A
D3
R2
1
R9
C21
R7
C22
1
R LOAD
R14
2
R14
MASTER/FIELD LOOP
SN:
DS8500 EV KIT
LAYER 1 TOP
LAYER 2 GND PLANE
LAYER 3 PWR PLANE
LAYER 4 BOTTOM
[REV 2]
2
2
U5
U5
1 2
R6
R6
1
C24
C24
C26
1
2
3 13
14
15
1617181920
D4
12
FSK IN M
JP6JP6
D3
2
R9
1 2
R8
R8
1 2
C27
C27
1 2
C23
C23
1 2
C21
1 2
C22
1 2
R7
R15
C31
1 2
C33
C33
A
D7
C
12
RXD M
12
OCD M
12
RTS M
12
TXD M
1
C25
1
C28
DS8500
C25
1 2
C26
2
C28
1 2
C29
C29
4
5
6 7 8 9 10
11
12
21
1
2
12
JP7JP7
2
1
1 2
R18
R18
2
C35
1 2
C30
C30
1 2
C32
C32
1234
1 2
R13
R13
1 2
R15
1 2
R12
2
R11
1 2
C34
C34
1 2
C35
5678
U6
U6
2
R16
1 2
C31
1
2
T1
1
R16
5
6
T1
D7
PCB-00050-2-0
LAYER 1 - COMPONENT SIDE (TOP)
SILKSCREEN BOTTOMPASTE MASK BOTTOMPASTE MASK TOPSOLDER MASK BOTTOMSOLDER MASK TOPSILKSCREEN TOPASSEMBLY DRAWING BOTTOMASSEMBLY DRAWING TOPDRILL TEMPLATE
LAYER 4 - SOLDER SIDE (BOTTOM)
BMP4
BMP4
1
PCB-00050-2-0
JP2JP2
JP3JP3
JP5JP5
JP4JP4
1
TP6
TP6
2
Y2
Y2
2
R17
R17
1
C36
3
RAW FSK M
1
R19
R19
2
1
C37
C37
C36
1
2
R12 R11
5
6
Q2
3
Q2
4
1
BMP1
H4
1
H4
1
GND
1 2
Q1
Q1
1
R10
R10
3 4
1
TP8
TP8
GND
BMP1
1
H1H1
0
0