ADA4523-1 Datasheet | Analog Devices

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 n V p-p from 0.1 Hz to 10 Hz typical Spectral density voltage: 4.2 n V/√Hz typical at 1 k Hz Rail-to-rail output Unity-gain stable GBP: 5 MHz typical Slew rate: 1.8 V/µs typical falling PSRR: 168 d B typical at VS = 4.5 V to 36 V Open-loop voltage gain: 160 d B typical at VOUT = - 14.75 V to +14.75 V, RL = 10 kΩ, VS = 30 V CMRR: 160 d B 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 n V 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, bined with low noise, low offset, 168 d B power supply rejection ratio (PSRR), and 160 d B mon-mode rejection ratio (CMRR), make the ADA4523-1 well suited for high dynamic range test, measurement, and instrumentation systems. TYPICAL APPLICATION DIAGRAM R1 R2 1kΩ 750Ω R3 C2 5.62kΩ 47n F 8V TO 12.6V 8V TO 36V C5 C4 0.1µF 0.1µF - C1 - 4.7µF R4 2Ω + LT6202 + ADA4523-1 VOUT C3 47µF 8V TO 13.2V C6 0.1µF VIN VOUT_F SHDN VOUT_S LTC6655-5 R5 10kΩ C7 2.2µF C8 20µF (FILM) 21094-001 Figure 1. Precision Filtering Voltage Reference Buffer The ADA4523-1 provides...