ADA4895-1ARZ

Overview

The ADA4895-1ARZ is a single-channel, high-speed voltage feedback operational amplifier manufactured by Analog Devices Inc. It features a gain-bandwidth product exceeding 1.5 GHz and a slew rate of 943 V/µs. The device operates within a supply range of 3 V to 10 V with a quiescent current of 3 mA per amplifier. Key electrical specifications include a −3 dB bandwidth of 236 MHz at G = +10, an input offset voltage of 53 µV (max 350 µV), and low noise characteristics of 1 nV/√Hz at 100 kHz. It utilizes an 8-lead SOIC package.

Feature Summary

• Rail-to-rail output stage capability
• Gain stability for configurations greater than or equal to 10 V/V
• Integrated disable feature for power management
• Low wideband noise density

Applications

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

Procurement Notes

Verify the specific ordering suffix 'ARZ' corresponds to the 8-lead SOIC package variant. Confirm RoHS compliance status as indicated in official documentation. Ensure the application environment remains within the specified operating temperature range of -40°C to +125°C. Check for any recent manufacturing changes or lifecycle notices associated with this part number before finalizing procurement.

Selection Notes

Select this component when a gain stability requirement of 10 V/V or higher is acceptable. It is suitable for applications requiring rail-to-rail output swing and low power consumption relative to its speed. For unity-gain stable designs, alternative models such as the ADA4897-1 should be considered instead.

Part Context

This single-channel amplifier belongs to the ADA4895 family, which also includes the dual-channel ADA4895-2. Both variants share similar electrical characteristics but differ in packaging; the dual version is available in a 10-lead MSOP package. The series is designed using a proprietary SiGe bipolar process to achieve high speed and low noise simultaneously.

Replacement Considerations

For designs requiring unity-gain stability, the ADA4897-1 is the recommended substitute. Other low-noise alternatives listed in the datasheet include the AD8021, AD8045, and ADA4841-1.