User Guide

Overview

The AD4170-4 Customer Evaluation Board User Guide provides comprehensive information about the EVAL-AD4170-4ARDZ evaluation kit and the AD4170-4 device. This guide covers hardware setup, configuration, software procedures, and practical applications for evaluating the device.

Hardware Setup

Block Diagram

Connection Overview

The evaluation board connects to a compatible controller board through Arduino-compatible connectors, providing a flexible and standardized interface for signal routing and control.

Figure 1 Example of evaluation board connected to the SDP-K1 controller board

Power Supply Configuration

Board Connections

The evaluation board features multiple connectors for signal input:

• J1: Primary signal input connector

• J2: Sensor excitation and bridge connections

• J3: Additional sensor/digital signal connections

• J4: GPIO and digital control

• J5: Amplifier and external voltage supply

• SMB connectors: Reference and clock inputs

Reference and Clock Options

Hardware Link Configuration

The evaluation board uses configurable jumpers (links) to customize the hardware setup for different applications. The following table describes the available links:

Link Numbers	Colour	Default Position	Description	Rough Board Location
LK1	Blue	Inserted	Noise Test. Channels AIN5 + AIN6	Right of J1
LK2	Red	Inserted	Thermocouple - Cold Junction Resistor Bypass	Right of J1
LK3	Red	Inserted	Precision Reference Resistor Bypass	Right of J1
LK4	Red	A	Pos A: GPIO 1 (IOUT1) to J1 Pos B: REFOUT	Right of J1
LK5	Blue	B	Wire Bridge EXC+ select: Pos A: MOSFET+ Pos B: AVDD	Right of J2 (EXC+)
LK6	Blue	Uninserted	Short EXC+/REFIN+: Pos Inserted = 4 Wire Bridge	Right of J2 (4/6 wire)
LK7	Blue	B	Wire Bridge EXC- select: Pos A: MOSFET- Pos B: Power Switch (GPIO1)	Right of J2 (EXC-)
LK8	Blue	Uninserted	Short EXC-/AVSS: Pos Inserted = 4 Wire Bridge	Right of J2 (EXC-)
LK9	Blue	Uninserted	Short EXC-/REFIN-: Pos Inserted = 4 Wire Bridge	Right of J2 (4/6 wire)
LK10	Black	A	ADA4595-1 AIN3+ AIN4. AVDD select. Pos A: Internal AVDD Pos B: External AVDD	Below of J5 (AMP34)
LK11	Black	A	ADA4595-1 AIN3+ AIN4. AVSS select. Pos A: Internal AVSS Pos B: External AVSS	Below of J5 (AMP34)
LK12	Black	A	ADA4595-1 AIN7+ AIN8. AVDD select. Pos A: Internal AVDD Pos B: External AVDD	Below of J5 (AMP78)
LK13	Black	A	ADA4595-1 AIN7+ AIN8. AVSS select. Pos A: Internal AVSS Pos B: External AVSS	Below of J5 (AMP78)
LK14	N/A	DNI	SCP connect AC amplifier external AVSS and Ground	Left of J5
LK15	N/A	DNI	SCP connect external AVSS and Ground	Right of J5
LK16	N/A	DNI	SCP connect external AVDD and Ground	Right of J5
LK17	N/A	DNI	SCP connect external IOVDD and Ground	Right of J5
LK18	N/A	DNI	SCP connect AC amplifier external AVDD and Ground	Left of J5
LK19	Black	Uninserted	XTAL2 to Digital connector	Above PMOD (P6)
LK20	Black	A	External VREF LTC6655	Right to J1
LK21	Black	Inserted	Inserted: External crystal Uninserted External clock	Above SMB1 (Right)
LK22	Blue	A	GPIO 0: Pos A: To Connector J4 Pos B: Mosfet	Below J4
LK23	Blue	A	GPIO 1: Pos A: To Connector J4/J2 (LK31) Pos B: Mosfet	Below J4
LK24	Red	A	GPIO 2: Pos A: To Connector J1 Pos B: Mosfet	Right of J2
LK25	Red	A	GPIO 3: Pos A: To Connector J1 Pos B: Mosfet	Right of J2
LK26	Black	A	ADXL1002 Test Pos A: Test Pos B:Standard	Below IOVDD LED (midle right)
LK31	Blue	A	GPIO1 Connector select. Pos A: J2 (Power Switch) Pos B: J3	Below J4
LK32	Black	A	IOVDD select. Pos A: 3.3V Pos B: EXT	Below J5 (near IOVDD LED)
LK33	Black	A	LT1962-5 power down Pos A: On	Below J5
LK34	Black	A	LTC3129 power down Pos A: On	Below J5
LK35	Black	A	LT1962-2.5 power down Pos A: On	Below J5
LK36	Black	A	LTC1983 power down Pos A: On	Below J5
LK37	Black	A	ADP7182 power down Pos A: On	Below J5
LK38	Black	A	ADP150 power down Pos A: On	Below J5
LK39	Grey	Inserted	AVSS GND short	Top Left
LK40	Grey	Inserted	AVSS GND short	Above Thermocouple Connection
LK41	Grey	Inserted	AVSS GND short	Below J4
LK42	Grey	Inserted	AVSS GND short	Below J5
LK43	Grey	Inserted	AVSS GND short	Right of J1
LK44	Grey	Inserted	AVSS GND short	Below J5 (near AVDD LED)
LK45	Grey	Inserted	AVSS GND short	Left of PMOD (P6)
LK46	Grey	Inserted	AVSS GND short	Right of Thermocouple Connection
LKVOCM34	Black	4525	VOCM ADA4945-1 Pos A: DACOUT Pos B: VBIAS Pos C: ADR4525 Pos D: REFOUT	Right of Thermocouple Connection
LKVOCM78	Black	4525	VOCM ADA4945-1 Pos A: DACOUT Pos B: VBIAS Pos C: ADR4525 Pos D: REFOUT	Middle of board

Sensor Configuration Examples

The AD4170-4 evaluation board supports multiple sensor types through flexible input configuration.

2-Wire Configuration (RTD)

3-Wire Configuration (RTD)

4-Wire Configuration

4-Wire Load Cell - DC Configuration

4-Wire Load Cell - AC Configuration

Thermocouple Configuration

RTD Thermistor Configuration

Accelerometer Configuration

AC/DC Selection for Channels

For AC or DC input selection on channels AIN3-AIN4 and AIN7-AIN8, modify the resistor jumpers according to the table below:

AC/DC input	CH3-CH4	CH7-CH8
AC input	R41, R110	R27, R40
DC input	R42, R111	R26,R39

MOSFET Circuit Configuration