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This version (06 Sep 2022 14:57) was approved by Michael Bradley.The Previously approved version (09 Mar 2022 20:46) is available.Diff

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.
  1. Connect the EVAL-AD4130-8WARDZ to the controller board
    1. Using the Arduino Connectors

Block Diagram

Hardware Link Options

Link Numbers Colour Default Position Descirption 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-
4AIN 6 (AINN) with DC filtering
5AIN 7 (AINP) with DC filtering
6External Reference+ / Sense+
7Excitation+ /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.

  1. 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

  1. 3.3V supply (DEFAULT)
    • 3.3V regulator supplies AVDD
    • AVSS tied to GND [LK1-3 (Blue)]
  2. 1.8V supply
    • 1.8V regulator supplies AVDD
    • AVSS tied to GND [LK1-3 (Blue)]
  3. ±1.8V split supply
    • 1.8 regulator supplies AVDD
    • -3 regulator to a -1.8V regulator supplied AVSS
  4. VREF supply
    • The external reference supplies AVDD [LK14]
    • AVSS tied to GND [LK1-3 (Blue)]
  5. External AVDD/AVSS
    • Connections on Connector J7
SupplyRegulator 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

  1. 3.3V supply (DEFAULT)
    • 3.3V regulator supplies IOVDD
    • GND tied to AVSS [LK1-3 (Blue)]
  2. 1.8V supply
    • 1.8V regulator supplies IOVDD
    • GND tied to AVSS [LK1-3 (Blue)]
  3. ±1.8V split supply
    • 1.8 regulator supplies AVDD
    • GND Split from AVSS [LK1-3 (Blue)]
  4. Tied to AVDD (LK45)
    • AVDD supplies IOVDD
    • GND tied to AVSS [LK1-3 (Blue)]
  5. External IOVDD/GND
    • Connections on Connector J7
SupplyRegulator 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

  1. Arduino connection using the SDP-K1
  2. PMOD connector
  3. 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

For an introduction to the Serial Peripheral Interface (SPI), click here

Reference Options

  1. AD4130-8 Internal Reference +2.5V/+1.25V
  2. DEFAULT ADR391 On Board external reference
  3. 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)
  4. External Reference Connector J10

Selecting the reference source:

Software

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

  1. Board should be correctly connected to ACE
  2. Open AD4130-8 memory map
  3. Search for the CONFIG[0] register
  4. Set the REF_SEL_N[0] to the desired reference source or the Data(hex) to the relevant bits
    1. Dedicated reference pins REFIN1 +/- (Hex value 00, Binary Value 00).
    2. From GPIO0/1 REFIN2 +/- (Hex value 01, Binary Value 01).
    3. Internal Reference REFIN_REFOUT (Hex Value 02, Binary Value 10).
    4. AVDD to AVSS (Hex Value 02, Binary Value 11).

Hardware

Link Numbers Type Default Position Descirption 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

  1. ADR391, REFIN - shorted to AVSS (LK6)
  2. External Reference Connector J8
  3. External Reference Connector J10

Silk Screen

Location of Reference related components Location of Reference Links

Schematics

Bill of Materials

resources/eval/user-guides/ad4130-8/hardwareguide.txt · Last modified: 06 Sep 2022 14:57 by Michael Bradley