AD8554ARZ Electronic IC Chips Single Supply Operational Amplifiers

Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers

AD8551/AD8552/AD8554

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, CMRR, PSRR: 130 dB
• Ultralow input bias current: 20 pA
• Low supply current: 700 μA/op amp
• Overload recovery time: 50 μs
• No external capacitors required

APPLICATIONS

• Temperature sensors
• Pressure sensors
• Precision current sensing
• Strain gage amplifiers
• Medical instrumentation
• Thermocouple amplifiers

GENERAL DESCRIPTION

This family of amplifiers has ultralow offset, drift, and bias current. The AD8551, AD8552, and AD8554 are single, dual, and quad amplifiers featuring rail-to-rail input and output swings. All are guaranteed to operate from 2.7 V to 5 V with a single supply.

The AD855x family provides the benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. Using Analog Devices, Inc. topology, these new zero-drift amplifiers combine low cost with high accuracy. No external capacitors are required.

With an offset voltage of only 1 μV and drift of 0.005 μV/°C, the AD855x are perfectly suited for applications in which error sources cannot be tolerated. Temperature, position and pressure sensors, medical equipment, and strain gage amplifiers benefit greatly from nearly zero drift over their operating temperature range. The rail-to-rail input and output swings provided by the AD855x family make both high-side and low-side sensing easy.

The AD855x family is specified for the extended industrial/auto motive temperature range (−40°C to +125°C). The AD8551 single amplifier is available in 8-lead MSOP and 8-lead narrow SOIC packages. The AD8552 dual amplifier is available in 8-lead narrow SOIC and 8-lead TSSOP surface-mount packages. The AD8554 quad is available in 14-lead narrow SOIC and 14-lead TSSOP packages.

ABSOLUTE MAXIMUM RATINGS

1 Differential input voltage is limited to ±5.0 V or the supply voltage, whichever is less.

Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability

PIN CONFIGURATIONS

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