ADA4899-1YRDZ-R7

Overview

The ADA4899-1YRDZ-R7 is a unity-gain stable, ultralow noise voltage feedback operational amplifier. It features a 600 MHz bandwidth and a 310 V/µs slew rate with 1 nV/√Hz input voltage noise. The device operates on a supply range of 5 V to 12 V, drawing 14.7 mA. It includes a dedicated DISABLE pin for high-impedance output control and bias current cancellation. Available in an 8-lead SOIC package, it supports extended industrial temperatures from -40°C to +125°C.

Feature Summary

• Ultralow harmonic distortion performance below -117 dBc at 1 MHz
• Integrated DISABLE pin enabling high-impedance output state and input bias current reduction
• High-speed architecture supporting 600 MHz bandwidth and 310 V/µs slew rate
• Low noise characteristics with 1 nV/√Hz input voltage noise density

Applications

• Analog-to-digital drivers
• Instrumentation systems
• IF and baseband amplifiers
• DAC buffers
• Optical electronics

Procurement Notes

Verify the specific ordering suffix matches the required package type and reel configuration. Confirm that the component meets RoHS compliance standards for your region. Ensure the design accounts for the exposed paddle thermal requirements during assembly. Cross-reference the datasheet revision to validate all electrical specifications against your system constraints before finalizing procurement.

Selection Notes

Select this component when both low noise and high speed are critical requirements. The wide supply voltage range accommodates various single or dual power rails. Consider the disabled mode functionality if time-interleaved driving of shared outputs is necessary. Evaluate the thermal management capabilities of the chosen package for high ambient temperature environments.

Part Context

This part belongs to the ADA4899 series of high-speed operational amplifiers manufactured by Analog Devices Inc. The series utilizes proprietary XFCB processing technology to achieve high linearity and low noise. The YRDZ suffix indicates the specific 8-lead SOIC package variant within this product family.

Replacement Considerations

ADA4899-1YRDZ

FAQ

How does the DISABLE pin affect input bias current?

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

What is the purpose of the 24.9 Ω resistor in unity-gain configurations?

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

How is the exposed paddle handled in the package?

The exposed metal paddle must be soldered to the ground plane to improve heat transfer and increase reliability.