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 maximum at 5 V
Input noise
Voltage: 88 nV p-p from 0.1 Hz to 10 Hz typical
Spectral density voltage: 4.2 nV/√Hz typical at 1 kHz
Rail-to-rail output
Unity-gain stable
GBP: 5 MHz typical
Slew rate: 1.8 V/μs typical falling
PSRR: 168 dB typical at VS = 4.5 V to 36 V
Open-loop voltage gain: 160 dB typical at VOUT = −14.75 V to +14.75 V, RL = 10 kΩ, VS = 30 V
CMRR: 160 dB typical at VCM = −15.1 V to +13.5 V, VS = 30 V
Integrated EMI filters
Shutdown mode
Ground sense
Available in 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP

APPLICATIONS
High resolution data acquisition
Reference buffering
Test and measurement
Electronic scales
Thermocouple amplifiers
Strain gages
Low-side current sense

GENERAL DESCRIPTION
The ADA4523-1 is a high voltage, low noise, zero drift op amp that offers precision dc performance over a wide supply range of 4.5 V to 36 V. Offset voltage and 1/f noise are suppressed, allowing this op amp to achieve a maximum offset voltage of ±4 μV and a 0.1 Hz to 10 Hz input noise voltage of 88 nV p-p typical. The self calibrating circuitry of the ADA4523-1 results in low offset voltage drift with temperature (0.01 μV/°C maximum) and zero drift over time. Additionally, the ADA4523-1 uses on-chip filtering to achieve high immunity to electromagnetic interference (EMI).
Wide supply range, combined with low noise, low offset, 168 dB power supply rejection ratio (PSRR), and 160 dB common-mode rejection ratio (CMRR), make the ADA4523-1 well suited for high dynamic range test, measurement, and instrumentation systems.