ADI ADA4523-1BRZ

The ADA4523-1 is a high voltage, low noise, zero drift op amp that offers precision dc performance over a wide supply range of 4.5V to 36V. Offset voltage and 1/f noise are suppressed, allowing this op amp to achieve a maximum offset voltage of ±4μV and a 0.1Hz to 10Hz input noise voltage of 88nV p-p typical. The self calibrating circuitry of the ADA4523-1 results in low offset voltage drift with temperature (0.01μV/°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.

• 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

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