AD8293G160

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 ...