3650JG

Overview

The Texas Instruments 3650JG 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 provides a bandwidth of 15kHz with a slew rate of 1.2V/µs. Gain accuracy is specified at 0.5% maximum error, with nonlinearity limited to ±0.2% maximum. Input offset voltage is capped at ±1mV, and the unit operates within a temperature range of -40°C to +85°C.

Feature Summary

• Optical coupling mechanism utilizing DC analog modulation to eliminate electromagnetic interference issues associated with carrier-type techniques.
• High common-mode rejection capability of 140dB at DC, ensuring accurate signal transmission across high-voltage barriers.
• Integrated circuit reliability combined with ultra-low leakage characteristics, including 1.8pF isolation capacitance.

Applications

• Industrial process control systems requiring precise signal isolation
• Data acquisition applications involving high common-mode voltages
• Patient monitoring equipment such as ECG and EMG amplifiers
• Current shunt measurement circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific part number matches the required 32-pin CDIP package configuration. Review the latest datasheet for any updates regarding manufacturing status or recommended design practices to ensure compliance with current engineering standards.

Selection Notes

Select this component when high linearity and wide bandwidth are required in isolated environments. The 3650JG offers superior gain stability compared to transformer-coupled alternatives. Ensure power supply requirements align with the ±8V to ±18V operating range. Consider the input impedance characteristics when interfacing with source circuits to maintain optimal performance.

Part Context

Originally developed by Burr-Brown Corporation, this product line was acquired by Texas Instruments. The 3650 family represents a transition from modular isolation amplifiers to integrated solutions. This specific model utilizes matched photodiodes and negative feedback to achieve high precision and stability in linear isolation applications.

Replacement Considerations

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