AD8651AR-REEL

Overview

The AD8651AR-REEL is a single-channel, precision, low-noise CMOS operational amplifier manufactured by Analog Devices. It features rail-to-rail input and output capabilities with a gain-bandwidth product of 50 MHz and a slew rate of 41 V/µs. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V. Key electrical specifications include a typical input offset voltage of 100 µV, an input bias current of 1 pA, and a voltage noise density of 4.5 nV/√Hz at 100 kHz. It is housed in an 8-lead SOIC_N package.

Feature Summary

• Utilizes DigiTrim technology for post-package trimming of offset voltage across the entire common-mode range.
• Features true rail-to-rail input architecture using parallel NMOS and PMOS differential pairs.
• Provides rail-to-rail output swing capability with high drive strength up to 40 mA.
• Ensures no phase reversal occurs within the specified common-mode voltage range.

Applications

• Optical communications systems
• Laser source drivers and controllers
• Broadband communications interfaces
• High-speed ADC and DAC driving circuits
• Video line drivers

Procurement Notes

Verify that the component matches the specific AD8651AR-REEL designation, noting the 'AR' suffix indicates the SOIC_N package variant. Confirm the manufacturer is Analog Devices Inc. or an authorized distributor. Ensure the datasheet revision corresponds to Rev. D or later for accurate electrical characteristics. Check for authenticity markers consistent with Analog Devices packaging standards.

Selection Notes

Select this component when high speed and precision are required in a single-supply environment. The 50 MHz bandwidth and 41 V/µs slew rate support fast signal processing tasks. The low noise profile makes it suitable for sensitive front-end applications. Consider the 8-lead SOIC_N package for space-constrained designs requiring surface-mount installation.

Part Context

This part belongs to the AD865x family, which includes the dual-channel AD8652. Both variants share identical electrical performance characteristics but differ in channel count and pin configuration. The family is designed for applications demanding high precision, low distortion, and wide bandwidth in compact packages.

Replacement Considerations

The AD8652 serves as the dual-channel equivalent within the same family. Verify pin compatibility if substituting with other rail-to-rail amplifiers, as input protection and bias current characteristics may vary significantly between different manufacturers.

FAQ

Does the AD8651 exhibit phase reversal?

No, the AD8651 does not exhibit phase reversal for common-mode voltages within the power supply range.

How is the offset voltage trimmed?

The offset voltage is trimmed using DigiTrim technology after assembly to correct for mechanical stresses and ensure precision across the common-mode range.