ADA4523-1BCPZ-RL7

Overview

The ADA4523-1BCPZ-RL7 is a single-channel, high-voltage, low-noise zero-drift operational amplifier manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.5 V to 36 V and features rail-to-rail output capability. The device utilizes self-calibrating chopper stabilization circuitry to suppress offset voltage and 1/f noise, achieving a maximum offset voltage of ±4 µV at 5 V and a typical input noise voltage of 88 nV p-p from 0.1 Hz to 10 Hz. Key electrical characteristics include a gain bandwidth product of 5 MHz, a slew rate of 1.8 V/µs, and integrated EMI filters for enhanced immunity. It is housed in an 8-lead LFCSP package.

Feature Summary

• Chopper-stabilized architecture eliminates offset voltage drift over time and temperature.
• Integrated on-chip EMI filtering provides high immunity to electromagnetic interference.
• Rail-to-rail output swing with ground-sense input capability.

Applications

• High resolution data acquisition systems
• Thermocouple amplifiers
• Strain gage signal conditioning
• Electronic scales

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging type and reel specifications. Ensure compatibility with the required 8-lead LFCSP footprint during PCB layout. Confirm that the component meets all environmental and regulatory standards required for the target application before finalizing procurement.

Selection Notes

Select this component for applications requiring precision DC performance across a wide supply voltage range. The zero-drift technology makes it suitable for low-frequency signal conditioning where offset stability is critical. Consider the 5 MHz bandwidth and 1.8 V/µs slew rate for dynamic signal requirements.

Part Context

This part belongs to the ADA4523 family of zero-drift amplifiers. It is designed as a companion to other precision components such as the LTC6655 voltage reference and LT6202 high-speed amplifier. The device is intended for use in instrumentation and test equipment where high dynamic range and low noise are essential.

Replacement Considerations

Companion products listed include the ADA4522-1. Verify pinout and electrical specifications before substitution.

FAQ

How does the ADA4523-1 handle input bias current?

The input bias current is measured using an equivalent source impedance of 100 MΩ || 51 pF. Typical values are 300 pA at 25°C.

What is the internal chopping frequency of the device?

The internal chopping frequency is 330 kHz. Circuitry is used to suppress spurious artifacts at this frequency.