AD8691AKSZ-REEL7

Overview

The AD8691AKSZ-REEL7 is a single-channel, low-cost, low-noise CMOS operational amplifier with rail-to-rail output. It operates on a single supply from 2.7 V to 6 V and features a gain bandwidth product of 10 MHz and a slew rate of 5 V/µs. The device exhibits a typical input offset voltage of 400 µV and a maximum drift of 12 µV/°C. Input bias current is typically 0.2 pA, with a maximum of 1 pA at room temperature. Voltage noise density is 8 nV/√Hz at 1 kHz. It is housed in a 5-lead SC70 package and qualified for automotive applications.

Feature Summary

• Rail-to-rail output capability for maximizing dynamic range in single-supply systems.
• Low noise performance with 8 nV/√Hz voltage noise density suitable for precision signal conditioning.
• Very low input bias current of 1 pA maximum, minimizing errors in high-impedance sensor interfaces.
• Automotive qualification ensuring reliability under extended industrial temperature ranges.

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 tape and reel quantity. Confirm that the AKSZ designation matches the 5-lead SC70 package requirement for your PCB layout. Ensure the component meets RoHS compliance standards as indicated by the Z suffix. Cross-reference the datasheet revision F specifications against your design requirements before finalizing procurement.

Selection Notes

Select this component when a single-channel amplifier with rail-to-rail output is required in a compact SC70 footprint. It is appropriate for designs needing low noise and high speed within a 2.7 V to 6 V supply range. Consider the 12 µV/°C offset drift if operating across wide temperature variations. Verify that the 10 MHz bandwidth aligns with your signal frequency requirements.

Part Context

This part belongs to the AD8691/AD8692/AD8694 family of low-cost, low-noise CMOS operational amplifiers. While the AD8692 offers dual channels and the AD8694 provides four, the AD8691 is the single-channel variant. The AKSZ suffix specifically identifies the 5-lead SC70 surface-mount package option, distinct from the TSOT or MSOP packages used by other family members.

Replacement Considerations

Direct substitutes include AD8691AUJZ-REEL7 (TSOT-5 package) and AD8691WAUJZ-R7 (automotive grade TSOT-5). For pin-compatible alternatives in different packages, consider AD8691AKSZ-R2 or AD8691AKSZ-REEL. Note that automotive models may have differing specifications compared to commercial grades.

FAQ

What is the input voltage range for the AD8691AKSZ-REEL7?

The input voltage range extends from −0.3 V to +1.6 V at 2.7 V supply and up to +3.9 V at 5 V supply.

Does the AD8691AKSZ-REEL7 support unity-gain stability?

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

What is the short-circuit current specification?

The short-circuit current is ±20 mA at 2.7 V supply and ±80 mA at 5 V supply.