Op-amp offers precision DC performance over wide supply range

28-05-2020 | Analog Devices | Power

The Analog Devices ADA4523-1 is a high voltage, low noise, zero-drift op-amp that offers precision DC performance over a wide supply range of 4.5V to 36V. Offset voltage, and 1/f noise are suppressed, enabling this op-amp to produce a maximum offset voltage of ±4µV and a 0.1Hz to 10Hz input noise voltage of 88nV p-p typical. The self-calibrating circuitry of the ADA4523-1 results in low offset voltage drift with temperature (0.01µV/C maximum) and zero drift over time. Furthermore, the device employs on-chip filtering to achieve high immunity to EMI.


Wide supply range, combined with low noise, low offset, 168dB power supply rejection ratio (PSRR), and 160dB common-mode rejection ratio (CMRR), make the ADA4523-1 well suited for high dynamic range test, measurement, and instrumentation systems.


Typical applications include high-resolution data acquisition, reference buffering, test and measurement, electronic scales, thermocouple amplifiers, strain gauges, and low-side current sense.

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