ADA4805-2ARMZ

Overview

The ADA4805-2ARMZ-R7 is a dual-channel, high-speed voltage feedback operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail outputs and operates within a supply voltage range of 2.7 V to 10 V. The device provides a gain bandwidth product of 105 MHz at unity gain and a slew rate of 160 V/µs. Key electrical parameters include a maximum input offset voltage of 125 µV, an ultralow quiescent current of 500 µA per amplifier, and low noise characteristics with 5.9 nV/√Hz voltage noise density. The component includes a shutdown pin for dynamic power scaling.

Feature Summary

• Features rail-to-rail output capability and exceptionally low quiescent current consumption.
• Includes a dedicated shutdown pin enabling dynamic power management with fast turn-on times.
• Utilizes proprietary XFCB process technology to achieve low voltage and current noise performance.

Applications

• High resolution, high precision analog-to-digital converter (ADC) drivers
• Battery-powered instrumentation systems
• Micropower active filters
• Portable point of sales terminals
• Active RFID readers

Procurement Notes

Verify the specific package configuration against the datasheet outline dimensions before procurement. Confirm that the operating temperature range meets the application requirements of -40°C to +125°C. Ensure proper handling procedures are followed due to ESD sensitivity. Cross-reference the ordering suffixes to ensure compatibility with the intended PCB footprint and assembly process.

Selection Notes

Select this component for applications requiring high speed combined with low power consumption. The dual-channel architecture is suitable for differential signal processing or driving multiple ADC inputs. Consider the shutdown functionality for battery-operated devices requiring extended standby life. Evaluate the capacitive load drive capabilities if interfacing with long cables or sample-and-hold circuits.

Part Context

This part belongs to the ADA4805 family of low power, low noise, rail-to-rail amplifiers. The dual-channel variant shares core specifications with the single-channel ADA4805-1 but integrates two independent amplifiers in one package. The family is designed for high-resolution data conversion systems where power efficiency and signal integrity are critical constraints.

Replacement Considerations

ADA4805-2ACPZ-R7