AD8293G80 PDF Datasheet
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Description
This is Zero-Drift In-Amp. Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain AD8293G80, AD8293G160
FEATURES
Small package: 8-lead SOT-23 Reduced component count Incorporates gain resistors and filter resistors Low offset voltage: 20 μV maximum Low offset drift: 0.3 μV, °C maximum Low gain drift: 25 ppm, °C maximum High CMR: 140 dB typical Low noise: 0.7 μV p-p from 0.01 H- to 10 H- Single-supply operation: 1.8 V to 5.5 V Rail-to-rail output Available in 2 fixed-gain models
FUNCTIONAL BLOCK DIAGRAM
7 5 6
+VS +IN R1 4kΩ
1
FILT R2
OUT
8
IN-AMP
R3 5kΩ ADC OUT
4
IN
OUTPUT TO ADC WITH ANTIALIASING FILTER
07451-001
GND REF
2 3
AD8293Gxx
Figure 1.
+5V
APPLICATIONS
Current sensing Strain gauges Laser diode control loops Portable medical instruments Thermocouple amplifiers
0.1 F
7 5
C2
6
+VS LOAD
8
FILT R2
OUT
+IN R1 4kΩ IN-AMP
I
RSHUNT
1
R3 5kΩ ADC OUT
4
ADC C3 +3.3V REF
IN GND REF
2 3
1.8V DC-DC
Figure 2. Measuring Current Using the AD8293G80, AD8293G160
Table 1. AD829.