ADA4895-1ARJZ-R2

Overview

The ADA4895-1ARJZ-R2 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. It offers rail-to-rail output capability, low input offset voltage (max 350 µV), and low noise characteristics including 1 nV/√Hz at 100 kHz. The component is housed in a 6-lead SOT-23 package and supports an extended industrial operating temperature range from -40°C to +125°C.

Feature Summary

• High-speed performance with a gain-bandwidth product exceeding 1.5 GHz and a slew rate of 943 V/µs.
• Low power consumption with a quiescent current of 3 mA per amplifier across a wide supply range.
• Rail-to-rail output stage designed for large dynamic range applications.
• Integrated disable feature allowing for low-power standby modes.

Applications

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

Procurement Notes

Verify the specific ordering suffix ARJZ-R2 corresponds to the 6-lead SOT-23 package configuration. Confirm that the manufacturer's documentation explicitly lists this part number variant as available for procurement. Ensure compatibility with the intended PCB footprint and soldering profile for surface-mount assembly.

Selection Notes

Select this component when a gain stability of 10 or higher is acceptable, as it is not unity-gain stable. Consider the 6-lead SOT-23 package size constraints against thermal dissipation requirements. Evaluate the trade-off between the 3 mA quiescent current and the required 1.5 GHz bandwidth for the specific application load.

Part Context

This component belongs to the ADA4895 family of low-noise, high-speed amplifiers utilizing Analog Devices' proprietary SiGe bipolar process. The family includes single-channel variants like the ADA4895-1 and dual-channel versions such as the ADA4895-2. These devices are engineered for applications demanding high speed and low distortion without excessive power consumption.

Replacement Considerations

For unity-gain stable requirements, consider the ADA4897-1. For dual-channel equivalents, evaluate the ADA4895-2. Verify pinout and package compatibility before substituting with other high-speed op-amps.