ALD1726EPAL

Overview

The ALD1726EPAL is a monolithic rail-to-rail ultra-micropower precision CMOS operational amplifier featuring integrated user-programmable EPAD offset voltage adjustment. It offers a typical supply current of 25µA, an input bias current of 0.01pA, and a bandwidth of 400kHz. The device operates on a single supply from 2V to 10V or dual supplies of ±1V to ±5V. It provides a slew rate of 0.17V/µs and supports in-system programming for precise calibration.

Feature Summary

• Integrates EPAD technology for computer-assisted, user-programmable 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.
• Supports in-system programming to compensate for system-level errors including PSRR, CMRR, and temperature drift.
• Delivers extremely low input bias currents and micropower consumption suitable for battery-operated systems.

Applications

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

Procurement Notes

Verify the specific package suffix 'PAL' corresponds to the 8-pin Plastic DIP configuration as defined in the ordering information. Confirm that the required operating temperature range aligns with the 0°C to +70°C specification for this variant. Ensure compatibility with standard EPAD programmers for any necessary offset voltage adjustments during integration.

Selection Notes

Select this component when high precision is required alongside ultra-low power consumption. The integrated EPAD feature eliminates the need for manual trimming procedures, making it ideal for automated manufacturing environments. Consider its rail-to-rail capabilities for applications requiring maximum dynamic range within low voltage constraints.

Part Context

The ALD1726E series represents an evolution of the ALD1706 operational amplifier, incorporating exclusive EPAD technology for enhanced performance. This family targets analog applications demanding precise voltage trimming to achieve optimal system accuracy. The design utilizes CMOS FETs as in-circuit elements, allowing permanent storage of trim parameters even after power-down.

Replacement Considerations

The datasheet identifies the ALD1726E as a direct replacement for the ALD1706 operational amplifier. Verify pinout compatibility and ensure that the target application can accommodate the EPAD programming requirements if utilizing the trimming functionality.