ADA4897-1ARZ-RL

Overview

The ADA4897-1ARZ-RL is a single-channel, unity-gain stable voltage feedback operational amplifier manufactured by Analog Devices Inc. It features a low noise profile with 1 nV/√Hz wideband noise and 2.4 nV/√Hz at 10 Hz, alongside a 230 MHz bandwidth and 120 V/μs slew rate. The device operates on a supply voltage range of 3 V to 10 V with a quiescent current of 3 mA per amplifier. It includes a disable feature and offers rail-to-rail output swing. The component is housed in an 8-lead SOIC package and is rated for operation within the extended industrial temperature range of −40°C to +125°C.

Feature Summary

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

Applications

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

Procurement Notes

Verify the specific ordering suffix ARZ-RL against the manufacturer's official documentation to confirm the 8-lead SOIC package type and tape-and-reel packaging format. Ensure that the procurement specifications align with the required operating temperature range of −40°C to +125°C and the electrical parameters defined in the Rev. B datasheet.

Selection Notes

Select this component when designing circuits that require high speed combined with ultra-low noise characteristics. The 3 mA quiescent current makes it suitable for low-power applications compared to higher current alternatives. The inclusion of a disable pin allows for system-level power control, which is beneficial in battery-operated or multi-channel systems requiring standby modes.

Part Context

This part belongs to the ADA4896-2/ADA4897-1/ADA4897-2 family of amplifiers fabricated on Analog Devices' proprietary SiGe bipolar process. This technology enables high bandwidth and low noise while maintaining low power consumption. The ADA4897-1 specifically provides a single-channel solution, whereas the family also includes dual-channel variants in different packages.

Replacement Considerations

Consult the official datasheet for complementary parts such as the ADA4896-2 or ADA4897-2 if multiple channels are required. Verify pin compatibility and electrical specifications before substituting with other low-noise amplifiers like the AD797 or ADA4899-1.