ADA4523-1BRMZ-RL7

Overview

The ADA4523-1BRMZ-RL7 is a single-channel, 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 a typical gain bandwidth product of 5 MHz with a slew rate of 1.8 V/µs falling. The device exhibits a maximum offset voltage of ±4 µV at 5 V and an offset drift of 0.01 µV/°C. Input noise characteristics include 88 nV p-p from 0.1 Hz to 10 Hz and 4.2 nV/√Hz at 1 kHz. It provides rail-to-rail output swing, integrated EMI filters, and a shutdown mode, housed in an 8-lead SOIC package.

Feature Summary

• Zero-drift architecture utilizing self-calibrating circuitry to suppress offset voltage and 1/f noise over time and temperature.
• Integrated electromagnetic interference (EMI) filtering for high immunity to external RF signals.
• Shutdown mode capability allowing for significant reduction in supply current consumption.
• Rail-to-rail output stage providing full signal swing across the wide operating supply range.

Applications

• High resolution data acquisition systems
• Thermocouple amplifiers
• Strain gage interfaces
• Low-side current sense circuits

Procurement Notes

Verify that the ordering suffix -RL7 corresponds to the reel packaging format required for automated assembly processes. Confirm the specific package variant matches the design footprint, as the base part number supports multiple packages including SOIC, MSOP, and LFCSP. Ensure the component revision aligns with the latest datasheet specifications before finalizing procurement orders.

Selection Notes

Select this component when high precision DC performance is required alongside a wide supply voltage range up to 36 V. The zero-drift technology makes it suitable for applications sensitive to temperature variations and low-frequency noise. Consider the integrated EMI rejection if the environment contains significant radio frequency interference. Evaluate the shutdown feature if power management during idle states is a system requirement.

Part Context

The ADA4523-1 belongs to the ADA4523 family of high-voltage, low-noise, zero-drift operational amplifiers. This family is designed for precision instrumentation where stability and low noise are critical. The BRMZ-RL7 designation indicates a specific manufacturing lot and packaging configuration within the broader ADA4523 product line offered by Analog Devices.

Replacement Considerations

Companion products listed in the official documentation include the ADA4522-1 and LT6202 for different channel counts or speed requirements. Verify pin compatibility and electrical specifications against these alternatives before substitution.

FAQ

How does the ADA4523-1 handle input bias current?

The input bias current is typically 300 pA at 25°C and increases to 600 pA across the extended temperature range of -40°C to +125°C.

What is the internal chopping frequency of the device?

The internal chopping frequency is 330 kHz, which is used to modulate and suppress low-frequency noise and offset drift.