ADA4817-2ACPZ-R7

Overview

The ADA4817-2ACPZ-R7 is a dual-channel, unity-gain stable, ultra-high-speed voltage feedback operational amplifier with FET inputs. It features a -3 dB bandwidth of 1050 MHz at G=1 and a slew rate of 870 V/µs. The device operates on supply voltages ranging from 5 V to 10 V in single or dual configurations. Key electrical characteristics include an input bias current of 2 pA typical, input voltage noise of 4 nV/√Hz, and linear output current capability of 40 mA.

Feature Summary

• Ultra-high speed performance with 1050 MHz bandwidth and 870 V/µs slew rate
• Low noise architecture utilizing proprietary eXFCB process for minimal signal degradation
• Integrated power-down functionality allowing quiescent current reduction below 2 mA
• Low distortion pinout design simplifying PCB layout and improving harmonic performance

Applications

• Photodiode amplifiers
• Data acquisition front ends
• ADC drivers
• Active filters
• Output buffers

Procurement Notes

Verify the specific package type (LFCSP) and reel quantity against the datasheet ordering guide. Confirm that the ACPZ suffix corresponds to the correct temperature range and RoHS compliance status required for the target application environment before finalizing procurement.

Selection Notes

Select this component when high bandwidth and low noise are critical requirements. Ensure the system can accommodate the 19 mA typical quiescent current per channel. Verify that the load capacitance does not degrade phase margin without appropriate snubbing components.

Part Context

This part belongs to the ADA4817 family of FastFET op amps developed using Analog Devices' eXFCB process. The dual-channel variant provides two independent amplifiers in a single package, sharing common supply rails while maintaining separate control pins for individual power-down operations.

Replacement Considerations

ADA4817-1ACPZ-R7 (Single Channel)

FAQ

How is the power-down function controlled?

Each amplifier has a dedicated PD pin. The amplifier enables when the PD pin voltage is within 0.9 V of +VS and disables when it is at least 3.5 V from +VS.

What is the recommended method to reduce peaking in the ADA4817-2?

Place a small feedback capacitor across the feedback resistor to tame peaking, particularly noticeable at higher gains due to package parasitics.