AD8552ARZ-TD

The AD855x series amplifiers employ a patented fast-settling chopper stabilization technique that provides input offset voltage correction, achieving ultralow offset and drift. This approach continuously measures and compensates for input offset, eliminating drift over time and temperature as well as 1/f noise. This design breakthrough enables the devices to achieve a 1.5 MHz gain bandwidth product and 1.2 V/μs slew rate while consuming only 125μA of supply current. These devices feature unity-gain stability, excellent power supply rejection ratio, and common-mode rejection ratio. The AD855x series is ideal for applications requiring precision amplification of low-level signals that cannot tolerate error sources, yet demand high bandwidth and fast transient response. Rail-to-rail input and output swing simplifies both high-side and low-side sensing. The series operates from a single supply as low as 1.8 V, making it suitable for dual-battery applications. The AD855x op amps feature enhanced EMI immunity to minimize interference from external sources and provide high ESD protection (5-kV HBM). All models are specified to operate over the extended industrial temperature range of −40°C to +125°C.

Applications

• Precision current sensing
• Medical equipment
• Electronic scales
• Strain gauge amplifiers
• ADC drivers

Key features

• High DC accuracy: max offset voltage ±8 μV, max offset voltage drift ±40 nV/°C; min open-loop gain 112 dB; min PSRR 112 dB; min CMRR 112 dB; typical input voltage noise 0.45 μVpp
• Bandwidth 1.5 MHz, slew rate 1.2 V/μs
• 0.1% settling time for 1V step signal: 1.2 μs
• Overload recovery to 0.1%: 35 μs
• Micropower: 125 μA per amplifier, wide supply voltage range 1.8 V to 5.5 V
• Operating temperature range: -40°C to +125°C