ALD2726EPBL

Overview

The ALD2726EPBL is a dual monolithic rail-to-rail precision CMOS operational amplifier featuring integrated user-programmable EPAD-based offset voltage adjustment. It operates on supply voltages from ±1V to ±5V with a typical supply current of 50μA. Key electrical parameters include an initial input offset voltage of 35μV (typical), an input bias current of 0.01pA, and a bandwidth of 200KHz. The device offers a slew rate of 0.1V/μs and supports in-system programming for precise calibration.

Feature Summary

• Integrates Electrically Programmable Analog Device (EPAD) technology for permanent, software-controlled 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 component tolerances and environmental factors.

Applications

• Sensor interface circuits
• Biochemical probe interfaces
• Precision sample and hold amplifiers
• Portable instruments

Procurement Notes

Verify the specific suffix 'EPBL' against manufacturer documentation to confirm package type and temperature range. Ensure compatibility with standard EPAD programmers for configuration. Confirm RoHS status and lead-free requirements if applicable to your manufacturing process. Check absolute maximum ratings for transient voltage limits during system integration.

Selection Notes

Select this component when ultra-low power consumption and high precision are required simultaneously. The EPAD feature eliminates manual trimming costs and enables automated calibration. Consider the limited offset program range of the non-E variant if extensive trimming is not needed. Verify that the 200KHz bandwidth meets the signal processing requirements of the target application.

Part Context

This part belongs to the ALD2726 family of dual micropower CMOS operational amplifiers. It shares core architecture with the single-channel ALD1726E but provides two independent amplifiers in one package. The EPAD technology distinguishes it from conventional op-amps by allowing internal FET-based trimming controlled via dedicated pins.

Replacement Considerations

ALD2726ESB: SOIC-14 package version. ALD2726EPB: PDIP-14 package version. ALD2726EDB: CERDIP-14 package version. Verify pinout compatibility and thermal characteristics when substituting between package types.

FAQ

How is the offset voltage programmed?

Offset voltage is programmed using the ALD E100 EPAD Programmer and appropriate adapter module. Voltages on VE1x and VE2x pins are incremented to inject charge into internal EPADs, permanently storing the trim settings even after power-down.

What is the difference between ALD2726E and ALD2726?

The ALD2726E features a wider offset voltage program range (±7mV to ±15mV) compared to the ALD2726 (±0.7mV to ±4mV). The ALD2726E is intended for applications requiring significant electrical trimming, while the ALD2726 is for standard applications with minimal programming needs.

Can the device handle capacitive loads?

Yes, the device is designed to drive capacitive loads up to 25pF while maintaining stability. It includes oscillation-resistant features combined with rail-to-rail output capabilities.