GENERAL DESCRIPTION:

The AD623 is an integrated, single- or dual-supply instrumentation amplifier that delivers rail-to-rail output swing using supply voltages from 3 V to 12 V. 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 of up to 1000. The superior accuracy of the AD623 is the result of increasing ac common-mode rejection ratio (CMRR) coincident with increasing gain; line noise harmonics are rejected due to constant CMRR up to 200 Hz. The AD623 has a wide input common-mode range and amplifies signals with commonmode voltages as low as 150 mV below ground. The AD623 maintains superior performance with dual and single polarity power supplies.

FEATURES:

Easy to use

Rail-to-rail output swing

Input voltage range extends 150 mV below ground(single supply)

Low power, 550 µA maximum supply current

Gain set with one external resistor

Gain range: 1 to 1000

High accuracy dc performance

0.10% gain accuracy (G = 1)

0.35% gain accuracy (G > 1)

Noise: 35 nV/√Hz RTI noise at 1 kHz

Excellent dynamic specifications

800 kHz bandwidth (G = 1)

20 µs 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