Precision, 40 V, Rail-to-Rail Input and Output Op Amp

The ADA4511-2 is a dual-channel, 40 V, high precision, low-input bias current, low-offset voltage, low-offset voltage drift, low noise, rail-to-rail input and output operational amplifier (op amp) that can be used at any point of the signal chain, which includes sensing, conditioning, and output drive. Through trimming, the ADA4511-2 achieves low offset drift (±0.4 μV/°C typical, ±2 μV/°C maximum) and low offset voltage (±25 μV typical, ±75 μV maximum).

The ADA4511-2 delivers top DC accuracy and AC precision, which makes it suitable for a wide variety of signal chain applications. By integrating a robust mux-compatible architecture, the ADA4511-2 effectively solves common system distortion and settling problems and provides the superior accuracy required in multiplexed multichannel precision signal chains. The ADA4511-2 is specified from −40°C to +125°C and is available in an 8-lead, SOICN package.

Applications

* Data acquisition systems

* Multiplexed input signal chains

* Industrial automation

* Medical instruments

* Electronic test and measurement

* Precision current measurement

* Photodiode amplifiers

* Low-offset voltage drift: ±2 μV/°C maximum

* Low-offset voltage: ±75 μV maximum

* Low voltage noise: 1 μV p-p from 0.1 Hz to 10 Hz typical

* Low voltage noise density: 5 nV/√Hz typical at f = 1 kHz

* High common-mode rejection: 140 dB typical

* Low input bias current: ±10 pA maximum

* Wide gain bandwidth product: 10.4 MHz typical

* High slew rate: 19 V/μs typical

* Low THD: −134 dB at f = 1 kHz

* Low quiescent supply current: 1.45 mA per amplifier typical

* Wide supply voltage operation: 6 V to 40 V, ±3 V to ±20 V