55 V, EMI-enhanced, zero drift, ultralow noise op amp

July 17, 2015 // By Graham Prophet
Analog Devices has added to its portfolio of zero-drift op amps with the ADA4522-2, which is a dual channel part with low noise and power, ground sensing inputs, and rail-to-rail output, optimised for total accuracy over time, temperature, and voltage conditions.

Wide operating voltage and temperature ranges, as well as the high open-loop gain and very low DC and AC errors suit the device to amplifying very small input signals and for accurately reproducing larger signals in a wide variety of applications.

The ADA4522-2’s performance is specified at 5.0 V, 30V, and 55V power supply voltages and it operates over the range of 4.5 V to 55V. It is an appropriate choice for applications using single-ended supplies of 5V, 10V, 12V,and 30V, or for applications using higher single supplies and dual supplies of ±2.5V, ±5V, and ±15V. The ADA4522-2 uses on-chip filtering to achieve high immunity to electromagnetic interference (EMI). It is fully specified over the extended industrial temperature range of −40°C to +125°C and is available in 8-lead MSOP and 8-lead SOIC packages.

Use it, ADI suggests in applications such as LCR meter/megohmmeter front-end amplifiers; Load cell and bridge transducers; Magnetic force balance scales; High precision shunt current sensing; Thermocouple/RTD sensors; or PLC input and output amplifiers.

Analog Devices;

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