ADA4528 Zero-Drift Operational Amplifiers (Op Amps

By Analog Devices Inc 54

ADA4528 Zero-Drift Operational Amplifiers (Op Amps

ADI's ADA4528 are zero-drift op amps featuring rail-to-rail input and output swing. With an offset voltage of 2.5 µV, offset voltage drift of 0.015 µV/°C, and typical noise of 97 nVPP (0.1 Hz to 10 Hz, AV = +100), the ADA4528-1 and ADA4528-2 are well suited for applications in which error sources cannot be tolerated. These op amps have a wide operating supply range of 2.2 V to 5.5 V, high gain, and excellent CMRR and PSRR specifications. They come in two configurations: the ADA4528-1 has a single circuit whereas the ADA4528-2 has two. The ADA4528 are designed for pressure sensors, strain gauges, and medical instrumentation that require precision amplification of low level signals.

The ADA4528-1 and ADA4528-2 are specified over the extended industrial temperature range (-40°C to +125°C). The ADA4528-1 is available in 8-lead MSOP and 8-lead LFCSP packages. The ADA4528-2 is available in an 8-lead MSOP package.

Features
  • Low offset voltage: 2.5 µV max.
  • Low offset voltage drift: 0.015 µV/°C max.
  • Open-loop gain: 130 dB min.
  • CMRR: 135 dB min.
  • Unity-gain crossover: 4 MHz
  • Gain bandwidth product: 3 MHz at AV = +100
  • Voltage supply: 2.2 V to 5.5 V
  • Temperature operating range: -40°C to +125°C, -55°C to +125°C
  • Package/case: TSSOP, WDFN, and WFDFN
Applications
  • Test and measurement
  • Thermocouple/thermopile
  • Load cell and bridge transducers
  • Precision instrumentation
  • Electronic scales
  • Medical instrumentation
  • Handheld test equipment

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