ADA4895-2ARMZ-R7

Overview

The ADA4895-2ARMZ-R7 is a dual voltage feedback amplifier manufactured by Analog Devices Inc. It features a gain-bandwidth product of 1.5 GHz, a slew rate of 943 V/µs, and a -3 dB bandwidth of 236 MHz at a gain of +10. The device operates with a supply voltage range of 3 V to 10 V and draws a quiescent current of 3 mA per amplifier. Input offset voltage is typically 53 µV with a maximum of 350 µV. It utilizes a 10-lead MSOP package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Rail-to-rail output stage capability
• Low wideband noise performance
• Integrated disable feature for power management
• High speed voltage feedback architecture

Applications

• Ultrasound amplifiers
• Low noise preamplifier circuits
• PLL loop filters
• High performance analog-to-digital converter (ADC) drivers
• Digital-to-analog converter (DAC) buffers

Procurement Notes

Verify the specific ordering suffix R7 corresponds to tape and reel packaging when sourcing. Confirm that the component matches the 10-lead MSOP physical footprint required for the target PCB layout. Ensure the supply voltage constraints between 3 V and 10 V align with the system design requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring high bandwidth and low noise without sacrificing power efficiency. The device is stable only at gains greater than or equal to 10; designs requiring lower gains must incorporate external compensation networks or select a unity-gain stable alternative. Verify thermal dissipation capabilities within the 10-MSOP package for the intended ambient temperature conditions.

Part Context

This part belongs to the ADA4895 family of high-speed operational amplifiers. The dual configuration provides two independent channels in a single compact package. It shares architectural similarities with the ADA4896-2 and ADA4897 series but offers distinct stability characteristics and noise profiles tailored for precision signal processing tasks.

Replacement Considerations

ADA4895-2ARMZ-RL

FAQ

What is the minimum stable gain for the ADA4895-2?

The amplifier is designed to be stable at a closed-loop gain of +10 or higher.

How does the disable pin function?

Driving the DISABLE pin below the negative supply voltage turns off the amplifier, reducing quiescent current significantly.