ADA4627-1BRZ-R7

Overview

The ADA4627-1BRZ-R7 is a single-channel, high-speed JFET operational amplifier manufactured by Analog Devices Inc. It features a gain bandwidth product of 19 MHz and a slew rate of 84 V/µs. The device operates on dual supplies ranging from ±5 V to ±15 V (30 V total). Key electrical specifications include a maximum input offset voltage of 200 µV, an input bias current of 5 pA, and a voltage noise density of 16.5 nV/√Hz at 10 Hz. It provides a typical common-mode rejection ratio of 116 dB and power supply rejection ratio of 112 dB. The component is housed in an 8-lead SOIC package and supports an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Combines precision DC characteristics with high-speed AC performance for sensitive measurement applications.
• Features very low input bias current and low offset voltage drift suitable for high impedance sensors.
• Designed without output phase reversal when inputs are maintained within or slightly above the power supply rails.

Applications

• High impedance sensors
• Photodiode amplifiers
• Precision instrumentation
• Phase-locked loop filters
• Medical equipment

Procurement Notes

Verify the specific BRZ suffix against the manufacturer's ordering guide to confirm the grade and packaging configuration. Confirm that the extended industrial temperature rating aligns with system requirements. Ensure PCB layout includes guard rings to minimize leakage currents associated with the JFET input stage. Validate supply decoupling practices to maintain stability given the high slew rate capabilities.

Selection Notes

Select this component when both high bandwidth and low DC error are required simultaneously. It serves as a unity-gain stable alternative to decompensated variants like the ADA4637-1. Consider the 8-lead SOIC package for standard surface mount assembly. Evaluate thermal resistance values if operating near the upper temperature limits.

Part Context

This part belongs to the ADA4627/ADA4637 series of wide bandwidth precision amplifiers. It represents a combination of low noise, low offset, and low bias current technologies. The series is designed to bridge the gap between traditional precision op amps and high-speed general-purpose devices. It is available in multiple package options including LFCSP and SOIC.

Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.