ALD2726ESBL

Overview

The ALD2726ESBL is a dual monolithic rail-to-rail precision CMOS operational amplifier featuring integrated user-programmable EPAD-based offset voltage adjustment. It operates on ±1V to ±5V supplies with a typical supply current of 50µA per amplifier. Key electrical parameters include an initial input offset voltage of 35µV (ALD2726E) or 100µV (ALD2726), a bandwidth of 200kHz, and a slew rate of 0.1V/µs. The device offers high open-loop gain and extremely low input bias currents.

Feature Summary

• Integrates Electrically Programmable Analog Device (EPAD) technology for computer-assisted in-system trimming of offset voltage without external components.
• Features rail-to-rail input and output voltage ranges with tolerance to over-voltage input spikes beyond supply rails.
• Provides individual user-programmable offset voltage trimming for each amplifier channel to compensate for component tolerances and environmental factors.

Applications

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

Procurement Notes

Verify the specific suffix 'L' against official manufacturer documentation to confirm if it denotes a specific temperature grade or packaging variant distinct from the standard 'SB' designation listed in the datasheet. Ensure compatibility with the ALD E100 EPAD Programmer for programming functionality.

Selection Notes

Select this component when system-level calibration is required to minimize accumulated offset errors from PSRR, CMRR, and temperature drift. It is suitable for micropower applications requiring rail-to-rail performance and programmable precision without manual trimming hardware.

Part Context

This part belongs to the ALD2726E/ALD2726 family of dual ultra-micropower CMOS operational amplifiers manufactured by Advanced Linear Devices. The series utilizes proprietary EPAD technology to replace traditional mechanical trimming methods with electrically programmable analog devices stored permanently within the silicon.

Replacement Considerations

Standard replacements include ALD2726ESB (SOIC-14 package). Verify pinout compatibility and EPAD programming requirements before substitution.

FAQ

How is the offset voltage programmed?

Offset voltage is programmed using the ALD E100 EPAD Programmer and appropriate adapter module by applying incremental pulses to the VE pins to inject charge into internal EPADs.

What happens to the programmed settings after power loss?

The set parameters are stored indefinitely within the device even after power-down due to the non-volatile nature of the EPAD technology.