Analog Devices is offering a dual-channel, zero-drift operational amplifier which is a chopper-stabilised op amp designed for high DC precision and measurement stability.

Suitable for use in gas analysers, remote sensors and medical devices, the ADA4051-2 features a new chopper architecture with ADI’s patent pending ACFB (auto-correction feedback loop) ripple-suppression technology to provide low offset voltage of 2µV (typ) and 15µV (max).

According to the supplier, the device architecture enables temperature drift suppression to 20nV per degree C (typ) and eliminates 1/f noise.

The op amp provides rail-to-rail I/O, which helps provide high dynamic range. The chopper architecture enables the device to achieve a high PSRR (power supply rejection ratio) of 135db and CMRR (common mode rejection ratio) of 135db (typ).

The ADA4051-2 amplifier provides a 125kHz gain-bandwidth product and draws only 17µA (max).

The op amp operates from a 1.8-V to 5.5-V single power supply and features rail-to-rail input and output swings to maximize ADC (analog-to-digital converter) dynamic input range.