AD8652ARZ

Overview

The AD8652ARZ is a dual-channel, precision, low distortion, and low noise CMOS operational amplifier manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 2.7 V to 5.5 V. The device features a gain bandwidth product of 50 MHz at 5 V and a slew rate of 41 V/μs. It exhibits a typical offset voltage of 100 μV specified over the entire common-mode range and a voltage noise density of 4.5 nV/√Hz. The input bias current is typically 1 pA. The component utilizes DigiTrim in-package trimming technology to correct offset voltages caused by mechanical stresses during assembly.

Feature Summary

• Features rail-to-rail input and output swing capabilities for maximum dynamic range.
• Utilizes DigiTrim technology to measure and correct offset voltage across the entire common-mode range.
• Provides high precision with low noise and low distortion characteristics suitable for demanding signal processing applications.

Applications

• High speed ADCs and DACs
• Optical communications
• Broadband communications
• Video line drivers

Procurement Notes

Verify that the ordering suffix ARZ corresponds to the specific package type and temperature grade required for your design. Confirm compliance with RoHS directives as indicated by the Z suffix. Ensure the selected variant matches the exact pinout and thermal resistance specifications outlined in the official datasheet before finalizing procurement.

Selection Notes

Select this component when a dual-channel configuration is required alongside high-speed performance and precision. The rail-to-rail input and output stages make it suitable for single-supply systems where maximizing voltage swing is critical. Consider the 50 MHz bandwidth and low noise profile for applications requiring accurate signal conditioning in broadband or optical communication environments.

Part Context

The AD8652ARZ belongs to the AD865x family of amplifiers, which includes single (AD8651) and quad (AD8654) variants. This family shares core architectural features such as DigiTrim technology and rail-to-rail operation. The AD8652 specifically provides two independent amplifiers in one package, offering a space-saving solution compared to using two separate single-channel devices.

Replacement Considerations

The AD8651 serves as the single-channel equivalent within the same family. The AD8654 offers four channels in a larger package. Verify pin compatibility and electrical specifications against these alternatives if channel count adjustments are necessary.

FAQ

How does the AD8652 handle offset voltage variations across the common-mode range?

The AD8652 uses DigiTrim technology to trim both NMOS and PMOS input differential pairs separately. This ensures that the offset voltage remains low and stable across the entire common-mode voltage range, including the transition region between the two input pairs.

What is the input protection mechanism for the AD8652?

The inputs are protected by ESD diodes connected to the power supplies. These diodes allow the device to withstand up to 4000 V ESD events without degradation. For input voltages exceeding the supply rails, an external series resistor should be used to limit the current to safe levels.