Description

The AD8572ARUZ is a member of the AD857x family of amplifiers featuring ultralow offset, drift, and bias current. It is a dual instrumentation amplifier with rail-to-rail input and output swings. With a low cost and high accuracy, it offers benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. The AD8572ARUZ operates from 2.7 V to 5 V single supply and does not require external capacitors. It is ideal for use in precision measuring instruments such as temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.

Specifications and features

• Low offset voltage: 1 μV
• Input offset drift: 0.005 μV/°C
• Rail-to-rail input and output swing
• 5 V/2.7 V single-supply operation
• High gain: 145 dB typical
• CMRR: 140 dB typical
• PSRR: 130 dB typical
• Ultralow input bias current: 10 pA typical
• Low supply current: 750 μA/op amp
• Overload recovery time: 50 μs
• No external capacitors required

Application Scenarios

The AD8572ARUZ is commonly used in precision measuring instruments such as temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.

Comparison

• Ultralow offset voltage, drift, and bias current
• Rail-to-rail input and output swings
• High accuracy with a low cost
• Operates from 2.7 V to 5 V single supply
• No external capacitors required

• Not suitable for applications that require high bandwidth
• Maximum output current is limited to 25 mA