AD8626ARMZ

Overview

The AD8626ARMZ is a dual precision JFET input operational amplifier manufactured by Analog Devices Inc. It features true single-supply operation with a supply voltage range of 5 V to 26 V, or ±2.5 V to ±13 V in dual-supply configurations. The device offers a gain bandwidth product of 5 MHz and a slew rate of 5 V/µs. Key electrical characteristics include a maximum offset voltage of 0.75 mV at ±13 V, an input bias current of 1 pA typical, and a supply current of 710 µA per amplifier. It provides rail-to-rail output capability and operates within the industrial temperature range of -40°C to +85°C.

Feature Summary

• JFET input stage providing very low input bias current for high impedance applications
• True single-supply operation with rail-to-rail output swing
• Unity gain stable design without phase reversal near positive rails
• Low power consumption suitable for battery-powered systems

Applications

• Photodiode transimpedance amplification
• ATE reference level drivers
• Battery management systems
• Remote sensor signal conditioning including automotive sensors
• Precision active filters

Procurement Notes

Verify the specific package suffix RM corresponds to the MSOP-8 configuration required for your PCB layout. Confirm that the operating environment remains within the specified industrial temperature limits of -40°C to +85°C to ensure performance specifications are met. Check datasheet notes regarding input overvoltage protection requirements when signals exceed the positive supply rail.

Selection Notes

Select this component when picoampere-level input bias currents are critical to minimize errors in high-impedance circuits. The rail-to-rail output allows for maximum dynamic range in single-supply systems. Ensure the application does not require shutdown functionality, as this variant lacks that feature. Consider thermal dissipation if driving heavy capacitive loads exceeding 500 pF.

Part Context

This part belongs to the AD862x family of precision low-power single-supply JFET amplifiers. The AD8626 specifically denotes the dual-channel version available in MSOP and SOIC packages. It shares architectural similarities with the AD8625 (quad) and AD8627 (single), offering consistent performance metrics across the series for multi-channel designs.

Replacement Considerations

Direct functional substitutes within the same family include the AD8625 and AD8627, though channel counts differ. Verify pin compatibility and package dimensions before substitution.