HCPL-7850#200

Instrumentation, Op Amps, Buffer Amps Overview

The HCPL-7850#200 is a hermetically sealed analog isolation amplifier manufactured by Broadcom Limited. It provides accurate, electrically isolated and amplified representations of voltage and current signals. The device integrates a sigma-delta analog-to-digital converter optically coupled to a digital-to-analog converter within an 8-pin ceramic DIP package. Key electrical specifications include a bandwidth of 100 kHz, an isolation voltage of 1500 Vrms, and a gain tolerance of 5%. It operates over the full military temperature range from -55°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Hermetically sealed construction for high reliability in harsh environments
• Sigma-delta modulation with optical coupling for signal isolation
• High common mode rejection capability at elevated voltages
• Guaranteed performance across the full military temperature range

Instrumentation, Op Amps, Buffer Amps Applications

• Motor phase and rail current sensing in high-speed motor drives
• Inverter current sensing applications
• Industrial and military high-reliability systems
• Switched mode power supply signal isolation

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the specific suffix #200 corresponds to the intended pin configuration or lead finish variant as defined in the official datasheet. Confirm compliance requirements such as MIL-PRF-38534 Class H certification if applicable to the mission-critical nature of the design. Ensure the ordering information matches the exact package style and marking requirements specified by the manufacturer for traceability.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high isolation voltage and precision are required in noisy environments. The sigma-delta architecture offers superior noise immunity compared to traditional linear isolators. Consider the 100 kHz bandwidth limit for signal frequency requirements. Evaluate the need for hermetic sealing based on environmental exposure conditions and long-term reliability targets.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the HCPL-7850/7851 family of optically isolated amplifiers designed for demanding industrial and military applications. These devices replace traditional current transformers and Hall-effect sensors by providing integrated signal conditioning and isolation in a compact package. The series is known for its robustness in high-voltage switching environments.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The HCPL-7850 is functionally compatible with the HCPL-7840. Verify pinout compatibility and parameter alignment before substitution. Check for any differences in package markings or qualification standards between the original and replacement parts.