AD8551ARZ-REEL

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 AD8551/AD8552/AD8554 provide the benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. Using Analog Devices 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 AD8551/AD8552/AD8554 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 AD8551/AD8552/AD8554 make both high-side and low-side sensing easy. The AD8551/AD8552/AD8554 are specified for the extended industrial/automotive temperature range -40°C to +125°C.

Applications

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

Key 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: 10 μs
• No external capacitors required