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AD8293G80

Analog Devices
Part Number AD8293G80
Manufacturer Analog Devices
Description Zero-Drift In-Amp
Published Apr 12, 2012
Detailed Description Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain AD8293G80/AD8293G160 FEATURES Small package: 8-lead SOT-23 Reduce...
Datasheet PDF File AD8293G80 PDF File

AD8293G80
AD8293G80

Overview
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 Hz to 10 Hz 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.
1µF 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 www.
DataSheet.
co.
kr Figure 2.
Measuring Current Using the AD8293G80/AD8293G160 Table 1.
AD8293Gxx Models and Gains Model AD8293G80 AD8293G160 Gain 80 160 GENERAL DESCRIPTION The AD8293G80/AD8293G160 are small, low cost, precision instrumentation amplifiers that have low noise and rail-to-rail outputs.
They are available in two fixed-gain models: 80 and 160.
They incorporate the gain setting resistors and filter resistors, reducing the number of ancillary components.
For example, only two external capacitors are needed to implement a 2-pole filter.
The AD8293G80/AD8293G160 also feature low offset voltage, offset drift, and gain drift coupled with high commonmode rejection.
They are capable of operating on a supply of 1.
8 V to 5.
5 V.
With a low offset voltage of 20 μV (AD8293G160B), an offset voltage drift of 0.
3 μV/°C, and a voltage noise of only 0.
7 μV p-p (0.
01 Hz to 10 Hz), the AD8293G80/AD8293G160 are ideal for applications where error sources cannot be tolerated.
Precision instrumentation, position and pressure sensors, medical instrumentation, and strain gauge amplifiers...


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