3650MG

Overview

The Texas Instruments 3650MG is an optically coupled linear isolation amplifier housed in a 32-pin ceramic DIP package. It features a rated continuous isolation voltage of 2000V and a tested withstand voltage of 5000V for 10 seconds. The device operates with supply voltages ranging from ±8V to ±18V, providing a typical bandwidth of 15kHz and a slew rate of 1.2V/μs. Input offset voltage is specified at a maximum of ±10mV at 25°C, with a temperature coefficient of ±100μV/°C. Quiescent current consumption is typically ±1.2mA.

Feature Summary

• Utilizes DC analog modulation technique to eliminate electromagnetic interference issues associated with carrier-type modular amplifiers.
• Incorporates balanced input architecture with matched photodiodes to minimize nonlinearity and time-temperature instability.
• Provides high common-mode rejection capabilities with ultra-low leakage characteristics across the isolation barrier.

Applications

• Industrial process control systems requiring signal isolation
• Data acquisition applications involving ground-loop elimination
• Biomedical measurements such as patient monitoring equipment
• Current shunt measurement circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required package and performance specifications. Review the latest datasheet for any updates regarding electrical parameters or handling precautions before finalizing procurement orders.

Selection Notes

Select this component when high isolation integrity and low noise are critical. Ensure the application requires a balanced input configuration compatible with the specified gain equations. Verify that the operating temperature range and supply voltage requirements align with the system design constraints.

Part Context

This part belongs to the Burr-Brown 3650 family of optically coupled isolation amplifiers, now managed by Texas Instruments. It represents an integrated circuit alternative to earlier modular rack-mounted devices, offering smaller size and wider bandwidth while maintaining reliability through laser trimming techniques.

Replacement Considerations

Public confirmed substitute part numbers: 3650HG, 3650JG, 3650KG.