ALD2722SBL

Overview

The ALD2722SBL is a dual monolithic rail-to-rail precision CMOS operational amplifier featuring integrated user-programmable EPAD-based offset voltage adjustment. It operates on a single supply of 4.0V to 10.0V or dual supplies of ±2.0V to ±5.0V. Key electrical parameters include a typical bandwidth of 1.5MHz, slew rate of 1.9V/μs, and low supply current of 2.0mA. The device offers an initial input offset voltage of 40μV (max 150μV) with a programmable range of ±2mV. Input bias current is typically 0.01pA at 25°C.

Feature Summary

• Integrates Electrically Programmable Analog Device (EPAD) technology for permanent, in-circuit offset voltage trimming without external components.
• Features rail-to-rail input and output voltage ranges with tolerance to over-voltage input spikes beyond supply rails.
• Provides extremely low input bias currents and high open-loop gain suitable for high-impedance signal sources.
• Supports application-specific and in-system programming modes to compensate for system-level errors.

Applications

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

Procurement Notes

Verify the specific suffix 'SBL' against official manufacturer documentation to confirm package type and temperature grade. Ensure compatibility with standard EPAD programmers for the trimming function. Confirm that the ordering code matches the required operating temperature range and pin configuration before procurement.

Selection Notes

Select this component when system accuracy requires elimination of manual trimming procedures and external trimmer potentiometers. It is suitable for designs needing rail-to-rail performance with micropower consumption. Consider the ALD2722E variant if a wider offset voltage program range is necessary compared to the standard ALD2722.

Part Context

This part belongs to the ALD2722 family of dual precision operational amplifiers from Advanced Linear Devices. It utilizes proprietary EPAD technology to store programmed offset voltage settings indefinitely. The device is designed to replace traditional precision op-amps where system calibration complexity and cost are critical design constraints.

Replacement Considerations

ALD2722ESB

FAQ

How is the offset voltage trimmed?

Offset voltage is trimmed using the VE1A/VE1B and VE2A/VE2B pins connected to internal EPAD circuits. Voltages on these pins are programmed via software control to inject charge, permanently storing the desired offset level even after power-down.

What is the difference between ALD2722 and ALD2722E?

Both devices feature EPAD trimming, but the ALD2722E has a wider offset voltage program range (±7mV) compared to the ALD2722 (±2mV). The ALD2722 is intended for applications requiring little or no electrical programming by the user.