1.8V, Power, Zero-Drift, RRIO Dual Amplifier

The ADA4051-1/ADA4051-2 are CMOS, micropower, zerodrift operational amplifiers utilizing an innovative chopping technique. These amplifiers feature rail-to-rail input/output swing and extremely low offset voltage while operating from a 1.8 V to 5.5 V power supply. In addition, these amplifiers offer high power supply rejection ratio (PSRR) and common-mode rejection ratio (CMRR) while operating with a typical supply current of 13 μA per amplifier. This combination of features makes the ADA4051-1/ADA4051-2 amplifiers ideal choices for battery-powered applications where high precision and low power consumption are important.

The ADA4051-1/ADA4051-2 are specified for the extended industrial temperature range of −40°C to +125°C. The ADA4051-1 amplifier is available in 5-lead SOT-23 and 5-lead SC-70 packages. The ADA4051-2 amplifier is available in an 8-lead MSOP and an 8-lead LFCSP.

The ADA4051-1/ADA4051-2 are members of a growing series of zero-drift op amps offered by Analog Devices, Inc.

Applications

* Pressure and position sensors

* Temperature measurements

* Electronic scales

* Medical instrumentation

* Battery-powered equipment

* Handheld test equipment

* Very low supply current: 13 μA typical

* Low offset voltage: 15 μV maximum

* Offset voltage drift: 20 nV/°C

* Single-supply operation: 1.8 V to 5.5 V

* High PSRR: 110 dB minimum

* High CMRR: 110 dB minimum

* Rail-to-rail input/output

* Unity-gain stable

* Extended industrial temperature range