ADA4610-1ARZ-R7

Overview

The ADA4610-1ARZ-R7 is a single-channel precision JFET operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail output, low offset voltage (max 0.4 mV B grade), and low input bias current (5 pA typical). Key electrical parameters include a gain bandwidth product of 16.3 MHz, a slew rate of 61 V/µs, and a supply current of 1.6 mA per amplifier. The device operates on dual supplies from ±4.5 V to ±18 V and is available in an 8-lead SOIC package.

Feature Summary

• Rail-to-rail output capability with no phase reversal when input voltages exceed the common-mode range
• Low input noise voltage density of 7.3 nV/√Hz at 1 kHz and peak-to-peak noise of 0.45 µV from 0.1 Hz to 10 Hz
• Very low input bias current of 5 pA typical, suitable for high impedance sensor amplification
• Excellent DC precision with low offset voltage drift and long-term stability

Applications

• Medical instruments
• Precision current measurement using shunts
• Photodiode amplifiers
• Multipole filters
• Audio applications

Procurement Notes

Verify the specific ordering suffix 'R7' corresponds to tape and reel packaging as indicated by standard manufacturer conventions for this series. Confirm the package type matches the required PCB footprint, specifically the 8-lead SOIC for the ARZ variant. Ensure the B-grade offset voltage specifications are required for the application design.

Selection Notes

Select this component for applications requiring high precision, low noise, and fast settling times with capacitive loads. The JFET input stage provides extremely low bias current, making it ideal for high-impedance sources. Consider the rail-to-rail output if maximizing dynamic range near the supply rails is necessary compared to older JFET amplifiers that may suffer from phase reversal.

Part Context

The ADA4610-1 is part of the ADA4610 family, which includes dual (ADA4610-2) and quad (ADA4610-4) variants. These amplifiers are designed as successors to the AD820 series, offering improved performance in terms of noise, speed, and stability under capacitive loading conditions. The family shares similar core electrical characteristics but differs in channel count and package options.

Replacement Considerations

The AD820 is listed as a related precision JFET operational amplifier in the manufacturer's documentation. Designers should verify compatibility regarding pinout, package dimensions, and specific electrical parameters such as slew rate and offset voltage when substituting.