UG-261 Datasheet, PDF (6/8 Pages) Analog Devices – The EVAL-INAMP-62RZ is designed for evaluation

UG-261
Evaluation Board User Guide
USER OPTIONS
Table 4. Jumpers
Jumper Function
W1
+GUARD select
W2
−GUARD select
W3
+Input coupling
W4
−Input coupling
W5
Guard driver −IN
W6
−VS to − VAUX
W7
+VS to + VAUX
W8
Guard driver +IN
W9
Guard driver +IN
W10
Guard driver +IN
W11
Reference input
W12
Reference input
W13
Reference input
W14
In-amp −VS source
W15
Guard driver −IN
Description
Allows the shield of the positive input cable to be connected to the guard driver or ground.
Allows the shield of the negative input cable to be connected to the guard driver or ground.
Installed; the positive input is dc-coupled.
Installed; the negative input is dc-coupled.
Connects the negative shield guard driver to Pin 1 of the in-amp.
Connects the negative supply voltage to the negative auxiliary voltage of the same value.
Connects the positive supply voltage to the positive auxiliary voltage of the same value.
Connects the positive shield guard driver to Pin 8 of the in-amp.
Connects the positive shield guard driver to ground.
Selects the single-shield guard driver.
Connects the reference of the in-amp to the offset-adjustable voltage reference.
Connects the reference of the in-amp to ground.
Connects the reference of the in-amp to an external reference supply.
Connects the in-amp −VS pin to GND or to −VS of the evaluation board.
Connects the negative shield guard driver to ground.
Status
Not installed
Not installed
Installed
Installed
Not installed
Not installed
Not installed
Not installed
Not installed
Not installed
Not installed
Installed
Not installed
Connected to −VS
Not installed
Table 5. Input/Output
I/O
+VS/−VS
GND
+IN/−IN
+GUARD/−GUARD
EXT_REF
OUTPUT
+VAUX/−VAUX
Function
Positive and negative rails of the in-amp.
Ground for the board. GND1, GND2, GND3, and GND4 designate pins.
Positive and negative inputs of the in-amp.
Positive and negative terminals for use with a shielded cable.
External reference input for the in-amp.
Output of the in-amp.
Auxiliary power rails for guard drivers and offset reference circuitry.
Table 6. User-Supplied Parts for Guard and Offset Circuits
Reference Designation
Part
Guard Drivers
C5, C6
0.1 µF, 25 V ceramic capacitor
A2
AD708JN dual precision op amp
Offset Regulators
C7 to C10
0.1 µF, 25 V ceramic capacitor
A1
OP177 precision op amp
CS1, CS2
J500 240 µA current source
R9, R10
5.9 kΩ, 1% metal film resistor
Rev. C | Page 6 of 8