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The ADA4098-2BRZ is a dual, robust, precision, rail-to-rail input and output operational amplifier (op amps) with an input operating range of -VS to +VS and above, referred to in this datasheet as Over-The-Top™. The ADA4098-2BRZ shares 165 μA of quiescent current per channel.

The ADA4098-2BRZ Over-The-Top™ input stage features robust input protection against harsh environments. The inputs can withstand differential voltages of up to 80 V without damaging or degrading DC accuracy. The operational common-mode input range extends from rail-to-rail and beyond to up to 70 V VS, independent of the +VS supply.

The ADA4098-2BRZ is unity gain stabilised and can drive loads of up to 20mA per channel. The kit can also drive capacitive loads of up to 200 pF. The amplifier has a low power shutdown function.

The ADA4098-2BRZ is available in an 8-pin standard small package (SOIC_N), an 8-pin miniature small package (MSOP) and a 10-pin lead frame chip level package (LFCSP).

Features

Very wide common-mode input range: -VS - 0.1 V to -VS + 70 V

Wide supply voltage range: +3 V to +50 V (to ±25 V for PSRR)

Low supply current: 165 μA per channel (typical)

Low input detuning voltage: ±35 μV (maximum)

Low input detuning voltage drift: ±0.5 μV/°C maximum (Class B)

Low input voltage noise:

1/f noise angle: 6 Hz (typical)

400 nV p-p typical at 0.1 Hz to 10 Hz

17 nV/√Hz (typical) at 100 Hz

High speed

GBP: 1.05 MHz typical at fTEST = 2.5 kHz

Slew rate: 0.85 V/μs (typical) at ΔVOUT = 25 V

Low supply current shutdown: 20 μA (maximum)

Low input detuning current: ±700 pA (max.)

Large signal voltage gain: 126 dB min at ΔVOUT = 3.5 V

CMRR: 120 dB min. at VCM = -0.1 V to +70 V

PSRR: VSY = +3 V to ±25 V, min. 123 dB

No phase reversal overload on inputs

±3 kV HBM and ±1.25 kV FICDM

Wide temperature range: -55°C to +150°C (Class H)

Applications

Industrial sensor conditioning

Power supply current sensing

Battery and power supply monitoring

Front-end amplifiers in harsh environments

4mA to 20mA transmitters

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