AD623ARZ-R7 Audio Power Amplifier IC Instrumentation Amplifiers SINGLE SUPPLY RR

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

• Single and Dual-Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier

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 common- mode voltages as low as 150 mV below ground. The AD623 maintains superior performance with dual and single polarity power supplies.