ALD2722EPBL

Overview

The ALD2722EPBL is a dual monolithic rail-to-rail precision CMOS operational amplifier featuring integrated user-programmable EPAD offset voltage adjustment. It operates on a single supply of up to 10V or dual supplies of ±5V, with a typical supply current of 2mA for both amplifiers. Key electrical characteristics include a bandwidth of 1.5MHz, a slew rate of 1.9V/μs, and an input bias current as low as 0.01pA. The device supports in-system programming to compensate for component tolerances and environmental factors.

Feature Summary

• Integrates Electrically Programmable Analog Device (EPAD) technology for user-programmable offset voltage trimming via software control.
• Features rail-to-rail input and output voltage ranges with tolerance to over-voltage input spikes beyond supply rails.
• Supports in-system programming to correct residual errors from external components and sensors without manual trimming.
• Provides extremely low input bias currents and high open-loop voltage gain suitable for high-impedance signal sources.

Applications

• Sensor interface circuits
• Precision sample and hold amplifiers
• Biochemical probe interfaces
• High source impedance electrode amplifiers

Procurement Notes

Verify the specific suffix 'EPBL' against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with standard EPAD programmers for in-system calibration. Confirm RoHS compliance status if required by the application environment.

Selection Notes

Select this component when system-level precision requires eliminating manual trimming procedures. It is suitable for applications needing programmable offset correction to account for external component tolerances. Consider its low power consumption and rail-to-rail capabilities for portable or battery-operated instrumentation designs.

Part Context

This part belongs to the ALD2722 family of dual precision CMOS operational amplifiers. It shares functional similarities with the ALD2722E but may differ in specific offset voltage program ranges. The family utilizes exclusive EPAD design for analog applications requiring precise voltage trimming without external components.

Replacement Considerations

ALD2722ESB

FAQ

How does the EPAD technology function?

EPAD uses CMOS FETs as in-circuit elements for trimming offset voltage bias characteristics under software control. Once programmed, parameters are stored indefinitely within the device even after power-down.

What is the purpose of the VE pins?

The VE pins (VE1A, VE2A, VE1B, VE2B) are programming pins used to inject charge into internal EPADs. Increasing voltage on these pins adjusts the offset voltage in specific directions.