AD8604ARQZ-R7

Overview

The AD8604ARQZ-R7 is a quad-channel precision CMOS operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities, operating on a single supply voltage ranging from 2.7 V to 5.5 V. The device utilizes DigiTrim technology for low offset voltage without laser trimming. Key electrical specifications include a gain bandwidth product of 8.4 MHz, a slew rate of 6 V/µs at 5 V supply, and a typical supply current of 750 µA per amplifier. Input bias current is typically 0.2 pA, with an input offset voltage maximum of 500 µV (A Grade). It operates within an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Rail-to-rail input and output architecture maximizes dynamic range in single-supply systems.
• DigiTrim patented post-assembly trimming achieves superior DC precision without laser trimming.
• Low input bias current suitable for high source impedance applications.
• No phase reversal ensures stable operation during overdrive conditions.

Applications

• Current sensing
• Barcode scanners
• Battery-powered instrumentation
• Multipole filters

Procurement Notes

Verify the specific grade (A or D) required for your application, as offset voltage specifications differ significantly between them. Confirm that the R7 suffix corresponds to the reel packaging format intended for your assembly line. Ensure the 16-lead QSOP package dimensions match your PCB footprint constraints. Check for any automotive qualification requirements if the component will be used in vehicle electronics, as standard versions may differ from AEC-Q100 qualified parts.

Selection Notes

Select this component when a quad-channel configuration is needed with rail-to-rail performance on a single supply. The wide bandwidth and low distortion make it suitable for audio and signal processing tasks. Consider the A Grade for tighter offset voltage tolerances compared to the D Grade. Evaluate the thermal resistance characteristics if high ambient temperatures are expected, ensuring the junction temperature remains within safe limits under load.

Part Context

This part belongs to the AD860x family of precision amplifiers, which includes single (AD8601), dual (AD8602), and quad (AD8604) variants. The family shares common electrical characteristics and pinouts where applicable, allowing for design flexibility across different channel counts. The AD8604 specifically provides four independent amplifiers in one package, optimizing board space for multi-channel signal conditioning applications.

Replacement Considerations

Direct substitutes include other quad rail-to-rail op-amps with similar supply voltage ranges and bandwidth, such as the OPA340 series, though pinout and exact electrical parameters must be verified against the datasheet specifications.