ADA4897-1ARJZ-R7

Overview

The ADA4897-1ARJZ-R7 is a single-channel, unity-gain stable voltage feedback operational amplifier manufactured by Analog Devices. It features a 230 MHz bandwidth and a 120 V/µs slew rate. The device provides a low input voltage noise density of 1 nV/√Hz at 100 kHz and 2.4 nV/√Hz at 10 Hz. It operates on a supply voltage range of 3 V to 10 V with a quiescent current of 3 mA per amplifier. The output stage is rail-to-rail, and the unit includes a disable feature. It is housed in a 6-lead SOT-23 package and operates over an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Low wideband noise performance with 1 nV/√Hz at 100 kHz
• High-speed operation with 230 MHz bandwidth and 120 V/μs slew rate
• Rail-to-rail output capability for maximum dynamic range
• Integrated disable pin for power management

Applications

• Ultrasound amplifiers
• Low noise preamplifiers
• PLL loop filters
• High performance ADC drivers
• DAC buffers

Procurement Notes

Verify the specific ordering suffix R7 corresponds to the tape and reel packaging configuration required for your assembly process. Confirm that the 6-lead SOT-23 footprint matches your PCB layout design. Ensure the disable pin logic levels align with your system control signals. Check the latest datasheet revision for any updates to absolute maximum ratings or thermal resistance values before finalizing procurement.

Selection Notes

Select this component when designing circuits that require high speed combined with ultra-low noise in a compact surface-mount package. The 3 mA quiescent current offers a balance between performance and power consumption suitable for battery-operated systems. Consider the rail-to-rail output swing if operating near the supply rails. Verify that the capacitive load drive capabilities meet your application requirements without additional compensation.

Part Context

This part belongs to the ADA4896-2/ADA4897-1/ADA4897-2 family of low noise, rail-to-rail output amplifiers. These devices are fabricated using Analog Devices' proprietary SiGe bipolar process technology. The family shares similar electrical characteristics but differs in channel count and package options. The ADA4897-1 specifically provides a single-channel solution in the small SOT-23 form factor.

Replacement Considerations

Direct replacements within the same family include the ADA4897-1ARZ (8-lead SOIC) or ADA4897-1ARJZ (without reel suffix). Cross-family alternatives like the AD8021 or AD8099 offer higher bandwidth but differ significantly in noise and power specifications.