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The ADA4523-1BCPZ is a high-voltage, low-noise, zero-drift operational amplifier that delivers precision DC performance over a wide 4.5 V to 36 V supply range. The offset voltage and 1/f noise are suppressed, enabling the amplifier to achieve an offset voltage of ±4 µV maximum and an input noise voltage of 88 nV p-p (typical) from 0.1 Hz to 10 Hz. The ADA4523-1's self-calibration circuitry features low offset voltage drift at a temperature of 0.01 µV/°C (maximum) as well as time-varying zero drift. In addition, the ADA4523-1 utilises on-chip filtering to achieve high immunity to electromagnetic interference (EMI).

Features

Supply voltage range: 4.5 V to 36 V

Offset voltage: ±4 µV (maximum, at 5 V)

Offset voltage drift: 0.01 µV/°C (max. at 5 V)

Input noise

Voltage: 88 nV p-p (0.1 Hz to 10 Hz, typical)

Spectral density voltage: 4.2 nV/√Hz (1 kHz, typical)

Rail-to-rail output

Unit gain stabilisation

GBP: 5 MHz (typical)

Voltage-swing rate: 1.8 V/μs (typical, falling)

PSRR: 168 dB (typical, VS = 4.5 V to 36 V)/li>

Open-loop voltage gain: 160 dB (typical, VOUT = -14.75 V to +14.75 V, RL = 10 kΩ, VS = 30 V)

CMRR: 160 dB (typical, VCM = -15.1 V to +13.5 V, VS = 30 V)

Integrated EMI filter

Shutdown mode

Ground detection

Applications

High-resolution data acquisition

Reference Voltage Source Buffering

Test and Measurement

Electronic Scales

Thermocouple Amplifiers

Strain Gauges

Low Side Current Detection

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