AD623ARZ SO-8 RRO Instrumentation Amplifier

Single-Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier

The AD623 is an integrated single-supply instrumentation amplifier that delivers rail-to-rail output swing on a 3V to 12V supply. The AD623 offers superior user flexibility by allowing single gain set resistor programming and by conforming to the 8-lead industry standard pinout configuration. With no external resistor, the AD623 is configured for unity gain (G = 1), and with an external resistor, the AD623 can be programmed for gains up to 1000.

Features

* Single-supply and dual-supply operation
* Rail-to-rail output swing
* Input voltage range extends 150 mV below ground (single supply)
* Low power, 550uA maximum supply current
* Gain set with one external resistor
* Gain range: 1 (no resistor) to 1000
* High accuracy dc performance
– 0.10% gain accuracy (G = 1)
– 0.35% gain accuracy (G > 1)
– 10ppm maximum gain drift (G = 1)
– 200uV maximum input offset voltage
– 2uV/°C maximum input offset drift
– 25 nA maximum input bias current
* Noise: 35 nV/vHz RTI noise @ 1kHz (G = 1)
* Excellent ac specifications
– 90 dB minimum CMRR (G = 10); 70dB minimum CMRR (G = 1) at 60Hz, 1kOhm source imbalance
– 800 kHz bandwidth (G = 1)
– 20 us settling time to 0.01% (G = 10)

Applications

* Low power medical instrumentation
* Transducer interfaces
* Thermocouple amplifiers
* Industrial process controls
* Difference amplifiers
* Low power data acquisition