AD623 Instrumentation Amplifier Module

The AD623 maintains superior performance with dual and single Parity power supplies.

The AD623 from Analog Devices 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 common mode voltages as low as 150 mV below ground.

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Applications of AD623 Instrumentation Amplifier Module

• Low power medical instrumentation

• Transducer interfaces

• Thermocouple amplifiers

• Industrial process controls

• Difference amplifiers

• Low power data acquisition

Features of AD623 Instrumentation Amplifier Module

• 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/vHz RTI noise at 1 kHz

• Excellent dynamic specifications

• 800 kHz bandwidth (G = 1)

• 20 µs settling time to 0.01% (G = 10)

Related Links

• AD623 Datasheet