Data Sheet

ADA4511-2

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

Rev. A

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FEATURES

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

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Low-offset voltage: ±75 μV maximum

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

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

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High common-mode rejection: 140 dB typical

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Low-input bias current: ±10 pA maximum

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Wide gain bandwidth product: 10.4 MHz typical

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High slew rate: 19 V/μs typical

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Low THD: −134 dB at f = 1 kHz

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Low-quiescent supply current: 1.45 mA per amplifier typical

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

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Integrated EMI filter

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Multiplexer compatible inputs

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Rail-to-rail high impedance: differential and common-mode

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Fast settling time

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Rail-to-rail output

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No phase reversal

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Heavy capacitive load drive capability: 1 nF

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Wide specified temperature range: −40°C to +125°C

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Available in 8-lead, SOIC_N and 8-lead, MSOP packages

GENERAL DESCRIPTION

The ADA4511-21 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 multi-

channel precision signal chains. The ADA4511-2 is specified from

−40°C to +125°C and is available in an 8-lead, SOIC_N and 8-lead,

MSOP.

APPLICATIONS

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Multiplexed data acquisition systems

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Electronic test and measurement

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Automated test equipment

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Medical instruments

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Energy monitoring

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Precision current sensing

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Precision buffer

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Transimpedance amplifiers

TYPICAL APPLICATION CIRCUIT

Figure 1. Multiplexed Data Acquisition Signal Chain

1 Protected by U.S. patent number 11,329,612; other patents pending.