3650MG

Overview

The Burr-Brown 3650MG is an optically-coupled linear isolation amplifier housed in a 48-LQFP package with an exposed pad. It features a single circuit configuration designed for high-performance signal isolation. Key electrical specifications include a -3dB bandwidth of 15 kHz and a common-mode rejection ratio of 140 dB. The device supports continuous input-to-output isolation voltages up to 2000 volts, ensuring robust protection in high-voltage environments while maintaining balanced input characteristics.

Feature Summary

• Optically coupled linear isolation architecture
• Balanced input configuration
• Ultra-low leakage current performance
• High common-mode rejection capability

Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment safety circuits
• Data acquisition systems with high noise immunity needs
• Power electronics monitoring interfaces

Procurement Notes

Verify the specific suffix and revision level against official Burr-Brown or Texas Instruments documentation to ensure compatibility with design requirements. Confirm package integrity and pinout alignment before integration. Check for obsolescence status as this component may be legacy. Ensure sourcing from authorized distributors to avoid counterfeit parts. Validate isolation voltage ratings match system safety standards.

Selection Notes

Select this component when optical isolation is required for linear signal transmission with high common-mode rejection. Consider the 48-LQFP package constraints for PCB layout. Evaluate thermal management due to the exposed pad requirement. Compare bandwidth and leakage specifications against alternative transformer-coupled or capacitive isolation amplifiers if higher frequency response is needed.

Part Context

This part belongs to the Burr-Brown family of optically-coupled linear isolation amplifiers. It is manufactured by Burr-Brown Corporation, now part of Texas Instruments. The series focuses on providing precise analog signal transfer across isolation barriers using light-emitting diodes and photodetectors, distinct from transformer-based alternatives like the 3656 series.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.