AD623ARZ

The AD623 is an integrated, single- or dual-supply instrumentation amplifier that delivers rail-to-rail output swing using supply voltages from 3V to 12V. 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.

Applications

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

Key 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 = 7) 0.35% gain accuracy (G > 1)
• Noise: 35 nV/√Hz RTI noise at 1 kHz
• Excellent dynamic specifications 800 kHz bandwidth (G = 7) 20 μs settling time to 0.07% (G = 70)