AD812ARZ

Overview

The AD812ARZ is a dual low-power current-feedback operational amplifier manufactured by Analog Devices Inc. It features a gain-bandwidth product of 145 MHz and delivers an output current of 50 mA per channel. The device operates on supply voltages ranging from 2.4 V to 36 V with a typical quiescent current of 4.5 mA. Key electrical specifications include an input bias current of 38 uA, an input offset voltage of 2 mV, a common-mode rejection ratio of 58 dB, and a power supply rejection ratio of 80 dB. It is housed in an SOIC-8 surface-mount package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Current feedback architecture provides high-speed performance with bandwidth independent of closed-loop gain.

Applications

• Video signal processing
• High-speed data acquisition systems

Procurement Notes

Verify the specific ordering suffix 'RZ' against the manufacturer's datasheet to confirm RoHS compliance and lead-free status. Ensure the SOIC-8 package dimensions match the target PCB footprint requirements. Confirm that the operating voltage range aligns with the system power supply design before finalizing procurement.

Selection Notes

Select this component for applications requiring high slew rate and wide bandwidth without sacrificing power efficiency. The current feedback topology is suitable for driving capacitive loads or maintaining stability at high gains. Compare input bias current and offset voltage against system noise requirements to ensure adequate signal integrity.

Part Context

This part belongs to the AD812 series of video amplifiers from Analog Devices. It is designed specifically for applications demanding fast transient response and low power consumption. The device integrates two independent amplifiers in a single compact package, facilitating space-constrained circuit designs.

Replacement Considerations

Consult official documentation for direct pin-compatible substitutes within the same family. Verify that any alternative maintains the required current feedback characteristics and output drive capability.