ADA4620-1ARZ

Overview

The ADA4620-1ARZ is a single-channel, precision JFET operational amplifier manufactured by Analog Devices Inc. It features a gain bandwidth product of 16 MHz and a slew rate of 34 V/µs. The device operates on a supply voltage ranging from 4.5 V to 36 V with a typical supply current of 1.3 mA. Key electrical specifications include an input offset voltage of 30 µV, an input bias current of 0.8 pA, and a maximum output current of 94 mA. It provides rail-to-rail output swing in an 8-SOIC package.

Feature Summary

• JFET input architecture providing ultra-low input bias current
• Rail-to-rail output capability for maximum dynamic range
• High slew rate supporting fast signal transitions
• Precision performance with low input offset voltage

Applications

• Photodiode sensor interfaces
• Transimpedance amplifiers
• ADC drivers
• Precision filters and signal conditioning

Procurement Notes

Verify the specific suffix ARZ indicates lead-free RoHS compliance and tube packaging when ordering. Confirm that the 8-SOIC package dimensions match the target PCB footprint. Ensure the operating temperature range covers -40°C to 125°C for the intended environment. Cross-reference the manufacturer part number directly with official Analog Devices documentation to avoid counterfeit components.

Selection Notes

Select this component for applications requiring high-speed precision amplification with minimal input loading. The 16 MHz bandwidth suits moderate-frequency signal processing tasks. Compare against the ADA4620-2ARZ if dual channels are required instead of a single unit. Consider the ADA4622 series for lower power consumption needs despite reduced speed.

Part Context

This part belongs to the ADA4620 family of precision amplifiers designed as successors to the AD820 series. It integrates JFET inputs with CMOS output stages to balance low noise and high drive capability. The family targets industrial and scientific instrumentation where accuracy and speed are critical.

Replacement Considerations

ADA4620-1ARZ-R7 (Tape and Reel variant)

FAQ

What is the input bias current specification?

The input bias current is specified at 0.8 pA.

Does the amplifier support rail-to-rail output?

Yes, the ADA4620-1ARZ features rail-to-rail output capability.