ADA4897-1ARJZ-R2

Overview

The ADA4897-1ARJZ-R2 is a single-channel, unity-gain stable, low noise, rail-to-rail output, high-speed voltage feedback amplifier. It features a 1 nV/√Hz input voltage noise density and a 230 MHz -3 dB bandwidth at G = +1. The device offers a 120 V/μs slew rate and settles to 0.1% in 45 ns. It operates on a wide supply range of 3 V to 10 V with a quiescent current of 3 mA per amplifier. The part includes a disable feature and is rated for operation from −40°C to +125°C.

Feature Summary

• Low wideband noise performance with 1 nV/√Hz input voltage noise density
• High-speed operation with 230 MHz bandwidth and 120 V/μs slew rate
• Rail-to-rail output stage maximizing dynamic range
• Integrated disable pin for power management

Applications

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

Procurement Notes

Verify the specific ordering suffix R2 against the manufacturer's official documentation to confirm packaging and reel specifications. Ensure the component matches the required SOT-23-6 package type and industrial temperature rating. Cross-reference the datasheet revision B specifications with your design requirements before procurement.

Selection Notes

Select this amplifier for applications requiring ultra-low noise combined with high speed in a compact footprint. The SiGe bipolar process enables low power consumption while maintaining high bandwidth. Consider the disable feature if system-level power control is necessary. Verify capacitive load drive capabilities for your specific application constraints.

Part Context

The ADA4897-1 is part of the ADA489x family of low noise, high-speed amplifiers manufactured by Analog Devices. It utilizes a proprietary next-generation SiGe bipolar process to achieve superior noise and speed characteristics. The single-channel configuration in a 6-lead SOT-23 package provides a space-efficient solution for dense circuit designs.

Replacement Considerations

ADA4897-1ARJZ-RL

FAQ

What is the input offset voltage maximum?

The maximum input offset voltage is 500 μV.

How does the disable feature function?

The disable pin allows the amplifier to be turned off, reducing quiescent current significantly when not in use.