AD8620BRZ-REEL

Overview

The AD8620BRZ-REEL is a dual-channel, precision JFET input operational amplifier manufactured by Analog Devices. It features a gain bandwidth product of 25 MHz and a slew rate of 50 V/μs at ±5 V supply, increasing to 60 V/μs at ±13 V. The device exhibits low offset voltage (maximum 100 μV), low input bias current (maximum 10 pA), and low voltage noise density (6 nV/√Hz). It operates within a supply range of ±5 V to ±13 V, draws 3.0 mA per amplifier, and functions over an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• JFET input architecture providing ultralow offset voltage, drift, and extremely low input bias current across the entire operating temperature range.
• High output drive capability with fast settling time to 0.01% accuracy and unconditional stability even with large capacitive loads exceeding 1 nF.
• Designed with no phase reversal when inputs are forced beyond the common-mode voltage range, ensuring reliable operation in servo systems.

Applications

• Photodiode amplifiers
• Automated test equipment (ATE) amplification and buffering
• Fast precision integrators and high-performance filters
• Medical instrumentation including CAT, MRI, and ultrasound devices

Procurement Notes

Verify that the specific part number suffix matches the required tape and reel packaging format for automated assembly. Confirm the package type corresponds to the narrow 8-lead SOIC configuration as specified for the AD8620 variant. Ensure the ordering code aligns with the manufacturer's current production status and revision level.

Selection Notes

Select this component for applications requiring high precision combined with wide bandwidth and low noise characteristics. It is suitable for driving high-performance ADC inputs or buffering DAC outputs where high output current and fast settling are critical. Consider the extended temperature range for environments lacking active cooling.

Part Context

This component belongs to the AD8610/AD8620 family of very high precision JFET input amplifiers. Manufactured using the XFCB process, these devices offer superior performance compared to standard JFET amplifiers by maintaining low bias currents at elevated temperatures. The AD8620 specifically provides dual-channel functionality within a compact surface-mount package.

Replacement Considerations

The AD8610 serves as the single-channel counterpart within the same family. Other precision JFET amplifiers may be considered if pin compatibility and electrical specifications such as bandwidth and noise density are closely matched.