ADA4897-2ARMZ-RL

Overview

The ADA4897-2ARMZ-RL is a dual-channel, low-noise, rail-to-rail output, high-speed voltage feedback amplifier manufactured by Analog Devices Inc. It features a quiescent current of 3 mA per amplifier and operates within a supply voltage range of 3 V to 10 V. The device provides a −3 dB bandwidth of 230 MHz at unity gain and a slew rate of 120 V/μs. Key electrical specifications include an input offset voltage of ±500 μV maximum, an input bias current of ±17 μA maximum, and a wide common-mode rejection ratio of up to 120 dB. It incorporates a dedicated disable feature for each channel.

Feature Summary

• Dual-channel architecture with independent disable pins for power management
• Rail-to-rail output stage maximizing dynamic range in single-supply applications
• Ultra-low wideband noise performance suitable for precision signal chains
• High-speed voltage feedback design ensuring stability across various gains

Applications

• Low noise preamplifiers
• Ultrasound amplifiers
• PLL loop filters
• High performance ADC drivers
• DAC buffers

Procurement Notes

Verify the specific package type and reel configuration when sourcing. Confirm that the ordering suffix matches the required tape and reel quantity. Ensure compatibility with the intended operating temperature range and supply voltage constraints before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring dual channels with low noise and high speed. Consider the 10-lead MSOP package for space-constrained layouts. Evaluate the disable pin functionality if system-level power reduction is necessary during idle states.

Part Context

This part belongs to the ADA4896-2/ADA4897-1/ADA4897-2 family of amplifiers. It shares core performance characteristics with the ADA4896-2 and ADA4897-1 but differs in packaging and channel count. The family utilizes Analog Devices' proprietary SiGe bipolar process to achieve high speed and low noise simultaneously.

Replacement Considerations

The ADA4896-2 serves as a functional alternative within the same family, offering identical electrical performance in an 8-lead package. Verify pinout compatibility and thermal requirements when substituting between different package types.