EVAL-AD4130-8WARDZ Hardware Guide

Set-up Procedures

After following the instructions in the Software Procedures section, set up the evaluation and SDP-K1 board as detailed in this section.

Warning

The evaluation software and drivers must be installed before connecting the EVAL-AD4130-8WARDZ evaluation board and EVAL-SDP-CK1Z board to the USB port of the PC to ensure the PC correctly recognizes the evaluation system.

• Connect the EVAL-AD4130-8WARDZ to the controller board

  • Using the Arduino Connectors

Block Diagram

Hardware Link Options

Link Numbers	Colour	Default Position	Description	Rough Board Location
LK1-3	White	Inserted	Ties AVSS and DGND together	N/A
LK4	Black	A	External Reference voltage select: Pos A: REFIN + is connected to the external +2.5V reference. Pos B: REFIN + is connected to the external +1.8V reference (+1.8V reference not currently available on the board).	Right of J10
LK5	Blue	Inserted	Noise Test. Channels AIN0 + AIN1	Right of Thermocouple Connection (A2)
LK6	White	Inserted	REFIN(-) to AVSS	Left of Switch S3
LK7	Black	A	External +2.5V Reference: Pos A: ADR391B Pos B: ADR3625B (The ADR3625B is not currently available on the board)	Right of J10
LK8	Black	Uninserted	Connects AIN10 to R95. When used with LK9 you can use the AD4130-8 to measure it’s own IOVDD current	Left of T_IOVDD
LK9	Black	Uninserted	Connects AIN11 to R95. When used with LK8 you can use the AD4130-8 to measure it’s own IOVDD current	Left of T_IOVDD
LK10	Black	Uninserted	Connects AIN12 to R96. When used with LK11 you can use the AD4130-8 to measure it’s own AVDD current	Left of Switch S1
LK11	Black	Uninserted	Connects AIN13 to R96. When used with LK10 you can use the AD4130-8 to measure it’s own AVDD current	Left of Switch S1
LK12	White	Uninserted	Connects AVSS to -1.8V. LK1-3 must be removed before this jumper is inserted	Right of Switch S1
LK14	Black	Uninserted	Connects REFIN(+) to AVDD	Below 3.5mm Jack Connection (A1)
LK15	Black	A	ADP150-3.3 Powered up: Pos A: LDO is on Pos B: LDO is off	Below Switch S1
LK16	Black	A	ADP150-1.8 Powered up: Pos A: LDO is on Pos B: LDO is off	Below Switch S1
LK17	Black	A	Arduino communication: Pos A: Standard Pos B: Alternative	Between Arduino Connectors
LK18	Black	A	Arduino communication: Pos A: Standard Pos B: Alternative	Between Arduino Connectors
LK19	Black	A	Arduino communication: Pos A: Standard Pos B: Alternative	Between Arduino Connectors
LK20	Black	A	Arduino communication: Pos A: Standard Pos B: Alternative	Between Arduino Connectors
LK21	Black	Uninserted	Connects the CLK pin to the INT pin	Below T_IOVDD
LK22	Red	Uninserted	Thermocouple - Cold Junction Resistor Bypass	Left of Thermocouple Connection (A2)
LK23	Blue	Uninserted	Short EXC+/PSW: Pos Inserted = 4 Wire Bridge	Left of Switch S3
LK24	Blue	Uninserted	Short EXC+/PSW: Pos Inserted = 4 Wire Bridge	Left of Switch S3
LK25	Blue	Uninserted	Short EXC+/REFIN+: Pos Inserted = 4 Wire Bridge	Left of Switch S3
LK26	Blue	Uninserted	Allows the user to use an external excitation source	Left of Switch S3
LK27	Black	B	REFIN(+) to connector: Pos A: To Connector J10 (BRIDGE) Pos B: To Connector J8 (RTD)	Bottom right of J10
LK28	Black	B	REFIN(-) to connector: Pos A: To Connector J10 (BRIDGE) Pos B: To Connector J8 (RTD)	Bottom right of J10
LK29	White	Inserted	Connects CLK pin to GND	Left of J2
LK30	Black	Uninserted	Connects AIN11 to LA_ELECTORDE trace of the A1 connector	Below 3.5mm Jack Connection (A1)
LK31	Black	Uninserted	Connects AIN14 to RA_ELECTORDE trace of the A1 connector	Below 3.5mm Jack Connection (A1)
LK32	Black	Uninserted	Connects AIN15 to DRIVEN_ELECTORDE trace of the A1 connector	Below 3.5mm Jack Connection (A1)
LK35	Red	Uninserted	Precision Reference 5.11k ohm Resistor Bypass	Right of J8
LK36	Red	Uninserted	Headroom Resistor Bypass	Right J8
LK37	Red	Uninserted	Precision Sense 10k ohm Resistor Bypass	Right of J8
LK45	Black	Uninserted	AVDD/IOVDD short	Bottom Right of Switch S2
T_AVDD	Black	A	AVDD Supply: Pos A: Directly to supply rail Pos B: Through R96 (LK10 and 11 must be inserted) which allows the AD4130-8 to measure it’s own AVDD current consumption	Below Switch S2
T_IOVDD	Black	A	IOVDD Supply: Pos A: Directly to supply rail Pos B: Through R95 (LK8 and 9 must be inserted) which allows the AD4130-8 to measure it’s own IOVDD current consumption	Below Switch S2
S1	Switch	+3.3V	AVDD Voltage connection: Pos A: +3.3V from the LDO Pos B: +1.8V from the LDO Pos C: +1.8V from the LDO Pos D: External voltage from J7 terminal block	Top of the Board
S2	Switch	+3.3V	IOVDD Voltage connection: Pos A: +3.3V from the LDO Pos B: +1.8V from the LDO Pos C: +1.8V from the LDO Pos D: External voltage from J7 terminal block	Top of the board
S3	Switch	REF1+/-	REFIN+/- connection: Pos A: REFIN1+/- Pos B: REFIN2+/- (AIN14 and AIN15) Pos C: REFOUT and AVSS (Internal Reference needs to be enabled in the ADC Control register)	Middle of the board

On Board Connections

3.5mm Jack Connector A1

Functionality:

• ECG

Thermocouple Connector A2

Connector J8: DC (Analog Input)

Functionality:

• Noise Test

• RTD

• Thermocouple

• Thermistor

Connection	Function
1	AIN0 (AINP) with DC filtering(DNI) and noise test channel. IOUT0 Excitation current for RTDs
2	AIN1 (AINN) with DC filtering(DNI) and noise test channel. IOUT1 Excitation current for 3 wire RTD
3	AIN 2 with DC filtering (RTD+ connection) (TC+ connection)
4	AIN 3 with DC filtering (RTD- connection) (TC- connection)
5	AIN 4 with DC filtering (Cold Junction+ connection) (Thermistor+ connection)
6	AIN 5 with DC filtering (Cold Junction- connection) (Thermistor- connection)
7	External Reference +
8	External Reference -

Connector J10: Wire Bridge (Analog Input)

Functionality:

• 4/6 Wire bridge

Connection	Function
1	Ground/shield connection
2	Excitation- /Power Switch Function for Wire Bridge
3	External Reference- / Sense-
4	AIN 6 (AINN) with DC filtering
5	AIN 7 (AINP) with DC filtering
6	External Reference+ / Sense+
7	Excitation+ /AVDD supply for Wire Bridge
8	Ground/shield connection

Connector J12: DC (Analog Input)

Functionality:

• DC connections for AIN8 to AIN15

Connection	Function
1	AIN 8 without DC filtering
2	AIN 9 without DC filtering
3	AIN 10 without DC filtering
4	AIN 11 without DC filtering
5	AIN 12 without DC filtering
6	AIN 13 without DC filtering
7	AIN 14 without DC filtering
8	AIN 15 without DC filtering

Connector J7: External Power

Connection	Function
1	External IOVDD connection
2	External GND connection
3	External AVSS connection
4	External AVDD connection

Digital Connectors

Arduino Connector P1-P5

PMOD Connector P7

Connection	Function	Connection	Function
1	CS_N	7	SYNC_N
2	MOSI/DIN	8	INT
3	MISO/DOUT	9	N/C
4	SCLK	10	N/C
5	GND	11	GND
6	V_USB	12	V_USB

SMA/SMB Connections

There is 1 SMA/SMB connections on the board. To allow clock signals into the board.

• SMB J2 Brings external MCLK to the AD4130-8

Power Supplies

The evaluation board receives power through the controller board when connected to the PC via USB. Linear regulators generate the required power supply levels from the applied USB voltage.

• Location of AVDD, AVSS and IOVDD control links are highlighted in Red in the diagram below

• Each regulators can be shut down using their shut down links highlighted in orange below

AVDD (S1) and AVSS (LK12) selection

• 3.3V supply (DEFAULT)

  • 3.3V regulator supplies AVDD

    • AVSS tied to GND [LK1-3 (Blue)]

• 1.8V supply

  • 1.8V regulator supplies AVDD

    • AVSS tied to GND [LK1-3 (Blue)]

• ±1.8V split supply

  • 1.8 regulator supplies AVDD

    • -3 regulator to a -1.8V regulator supplied AVSS

• VREF supply

  • The external reference supplies AVDD [LK14]

    • AVSS tied to GND [LK1-3 (Blue)]

• External AVDD/AVSS

  • Connections on Connector J7

Supply	Regulator	Shut down Link (ORANGE)
3.3V regulator	ADP150ACBZ-3.3-R7	LK15
1.8V regulator	ADP150ACBZ-1.8-R7	LK16
-3V regulator	LTC1983ES6-3#PBF	R3
-1.8V regulator	ADP7182AUJZ-1.8-R7	R3

IOVDD (S2) selection

• 3.3V supply (DEFAULT)

  • 3.3V regulator supplies IOVDD

    • GND tied to AVSS [LK1-3 (Blue)]

• 1.8V supply

  • 1.8V regulator supplies IOVDD

    • GND tied to AVSS [LK1-3 (Blue)]

• ±1.8V split supply

  • 1.8 regulator supplies AVDD

    • GND Split from AVSS [LK1-3 (Blue)]

• Tied to AVDD (LK45)

  • AVDD supplies IOVDD

    • GND tied to AVSS [LK1-3 (Blue)]

• External IOVDD/GND

  • Connections on Connector J7

Supply	Regulator	Shut down Link (ORANGE)
3.3V regulator	ADP150ACBZ-3.3-R7	LK15
1.8V regulator	ADP150ACBZ-1.8-R7	LK16

Serial Interface

There are four primary signals: CS, SCLK, MOSI/DIN, and MISO/DOUT (all are inputs, except for MISO/DOUT, which is an output).

Serial communication options

• Arduino connection using the SDP-K1

• PMOD connector

• Standalone mode

  • Removing the links LK17, 18, 19, 20 and using the pins from these links can then be used to fly-wire the signals to an alternative digital capture setup

Reference Options

• AD4130-8 Internal Reference +2.5V/+1.25V

• DEFAULT ADR391 On Board external reference

• External Reference Connector J8

  • Option to use 5.11k ohm precision resistor (R91) insert LK35 (Used for RTD Demo mode)

    • Option to use 10k ohm precision resistor (R91) insert LK37 (Used for Thermistor Demo mode)

• External Reference Connector J10

Selecting the reference source:

Software

Example shows setting reference for Channel 0, for channel n, go to register CONFIG[n]

• Board should be correctly connected to ACE

• Open AD4130-8 memory map

• Search for the CONFIG[0] register

• Set the REF_SEL_N[0] to the desired reference source or the Data(hex) to the relevant bits

  • Dedicated reference pins REFIN1 +/- (Hex value 00, Binary Value 00).

    • From GPIO0/1 REFIN2 +/- (Hex value 01, Binary Value 01).

    • Internal Reference REFIN_REFOUT (Hex Value 02, Binary Value 10).

    • AVDD to AVSS (Hex Value 02, Binary Value 11).

Hardware

Link Numbers	Type	Default Position	Description	Rough Board Location
S3	Switch	REF1+/-	REFIN+/- connection: Pos A: REFIN1+/- Pos B: REFIN2+/- (AIN14 and AIN15) Pos C: REFOUT and AVSS (Internal Reference needs to be enabled in the ADC Control register)

If REFIN1+/- or REFIN2+/- is selected the options below are available using links shown in the diagram below

• ADR391, REFIN - shorted to AVSS (LK6)

• External Reference Connector J8

• External Reference Connector J10

Silk Screen

Figure 1 Location of Reference related components

Figure 2 Location of Reference Links

Design and Integration Files

Schematics, layout files, and bill of materials are available on the EVAL-AD4130-8WARDZ product page.