AD8691AUJZ-REEL7

Overview

The AD8691AUJZ-REEL7 is a single-channel, low-cost, low-noise CMOS operational amplifier with rail-to-rail output. It operates on a single supply voltage ranging from 2.7 V to 6 V and is qualified for automotive applications. The device features a gain-bandwidth product of 10 MHz and a slew rate of 5 V/µs. Key electrical characteristics include a typical input offset voltage of 400 µV, maximum input bias current of 1 pA, and voltage noise density of 8 nV/√Hz at 1 kHz. It functions within an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Rail-to-rail output capability allows signal swing close to both supply rails.
• Low noise performance suitable for precision signal conditioning.
• Very low input bias currents minimize loading effects on high-impedance sources.
• Small TSOT package facilitates placement near sensors to reduce noise pickup.

Applications

• Photodiode amplification
• Battery-powered instrumentation
• Medical instruments
• Multipole filters
• Portable audio devices

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to the required reel quantity and packaging format before finalizing orders. Confirm that the UJ-5 TSOT-5 package variant matches the PCB footprint design. Ensure the component meets RoHS compliance requirements if mandated by the end-product specifications. Cross-reference the manufacturer's latest datasheet revision to confirm any updates to absolute maximum ratings or thermal characteristics.

Selection Notes

Select this component when a single-channel amplifier with rail-to-rail output is required in a compact surface-mount package. It is appropriate for designs needing low noise and very low input bias currents in single-supply systems. Consider the 10 MHz bandwidth and 5 V/µs slew rate for moderate-speed applications. Verify that the 2.7 V minimum supply voltage aligns with the system power budget.

Part Context

This part belongs to the AD8691/AD8692/AD8694 family of low-cost, low-noise CMOS operational amplifiers manufactured by Analog Devices. The AD8691 represents the single-channel version of this series. Other variants in the family include the dual-channel AD8692 and quad-channel AD8694, which share similar electrical characteristics but differ in channel count and package options.

Replacement Considerations

Check for AD8691AUJZ-R2 or AD8691AUJZ-REEL as alternative reel configurations within the same package. Automotive-grade equivalents are available as AD8691WAUJZ variants. Verify pinout compatibility and electrical specifications against potential substitutes from other manufacturers if sourcing constraints exist.

FAQ

Is the AD8691AUJZ-REEL7 unity-gain stable?

Yes, the AD8691 is specified as unity-gain stable.

What is the maximum operating temperature for this device?

The device is rated for an extended industrial temperature range up to +125°C.

Does the AD8691 support single-supply operation?

Yes, it supports single-supply operation with voltages ranging from 2.7 V to 6 V.