ADA4899-1YCPZ-R7

Overview

The ADA4899-1YCPZ-R7 is a unity-gain stable, ultralow noise, and distortion high-speed voltage feedback operational amplifier. It features a 1 nV/√Hz input voltage noise density and harmonic distortion below -117 dBc at 1 MHz. The device offers a 600 MHz small-signal bandwidth and a 310 V/μs slew rate with a ±5 V supply. It operates on a wide supply range of 4.5 V to 12 V while consuming approximately 14.7 mA of quiescent current. The component includes an input bias current cancellation mode via the DISABLE pin and is housed in an 8-lead LFCSP package.

Feature Summary

• Ultralow noise performance with 1 nV/√Hz voltage noise density suitable for precision systems
• High-speed operation featuring 600 MHz bandwidth and 310 V/μs slew rate
• Input bias current cancellation mode reduces bias current by a factor of 60 when enabled
• Integrated DISABLE pin provides high-impedance output state for time-interleaved applications

Applications

• Analog-to-digital drivers
• Instrumentation
• Filters
• IF and baseband amplifiers
• DAC buffers

Procurement Notes

Verify the specific Y suffix indicates the SOIC package variant rather than the standard LFCSP configuration. Confirm the R7 designation corresponds to the tape and reel packaging format required for automated assembly processes. Ensure the ordering code matches the exact thermal pad and pinout specifications defined in the official datasheet.

Selection Notes

Select this component for designs requiring simultaneous low noise and high speed without gain stability compromises. The integrated bias current cancellation allows driving high DC source impedances without offset errors. Consider the exposed paddle requirement for proper thermal management and grounding in high-frequency layouts.

Part Context

This part belongs to the ADA4899 family of high-speed operational amplifiers from Analog Devices. It utilizes proprietary XFCB processing technology to achieve high linearity and low power consumption. The device is designed to drive demanding loads while maintaining signal integrity in 16-bit and 18-bit data acquisition systems.

Replacement Considerations

ADA4899-1ACPZ-R7

FAQ

How does the DISABLE pin affect input bias current?

Pulling the DISABLE pin within 0.7 V of the positive supply activates an internal bias current cancellation circuit, reducing the input bias current to less than 200 nA.

What is the purpose of the series resistor in unity-gain configurations?

A 24.9 Ω series resistor at the noninverting input is required in unity-gain setups to maintain optimal noise performance and stability.