ADA4857-1YRZ-RL

Overview

The ADA4857-1YRZ-RL is a unity-gain stable, high-speed voltage feedback operational amplifier featuring ultralow distortion and low noise. It offers an 850 MHz bandwidth (LFCSP) or 750 MHz (SOIC), a 2800 V/μs slew rate, and settles to 0.1% in 15 ns. The device operates on a wide supply range of 5 V to 10 V with a quiescent current of 5 mA per amplifier. It includes a power-down feature and is available in 3 mm × 3 mm 8-lead LFCSP and 8-lead SOIC packages.

Feature Summary

• High-speed performance with 850 MHz bandwidth and 2800 V/μs slew rate
• Ultralow distortion and low noise characteristics for precision applications
• Integrated power-down pin for reduced power consumption
• Wide supply voltage operation from 5 V to 10 V

Applications

• Instrumentation systems
• IF and baseband amplifiers
• Active filters
• ADC drivers
• DAC buffers

Procurement Notes

Verify the specific package type (LFCSP vs. SOIC) and ordering suffix against the manufacturer's official documentation before procurement. Confirm that the component meets all required electrical specifications for the intended operating temperature range and supply voltage conditions. Ensure proper handling procedures are followed due to the surface-mount nature of the device.

Selection Notes

Select this amplifier for applications requiring high dynamic range and speed. Consider the thermal resistance differences between LFCSP and SOIC packages when designing for heat dissipation. Evaluate the capacitive load drive capabilities and necessary snubber resistors if driving significant capacitance, particularly in the SOIC package configuration.

Part Context

The ADA4857 series utilizes Analog Devices' proprietary XFCB process to achieve high performance. The single-channel ADA4857-1 complements the dual-channel ADA4857-2 within the same family. Both variants share similar electrical characteristics but differ in package options and channel count, allowing flexibility in circuit design.

Replacement Considerations

Direct replacements include the ADA4857-1YRUZ-RL. Verify pin compatibility and electrical specifications before substitution.

FAQ

Does the power-down pin put the output in a high-Z state?

No, the PD pin reduces quiescent current but does not place the output in a high-impedance state; therefore, the device should not be used as a multiplexer.

What is the settling time to 0.1% for the ADA4857-1?

The amplifier settles to 0.1% in 15 ns under standard test conditions.