HCPL-7860

HCPL-7860 is a single-channel, analog optically isolated amplifier from Broadcom/Avago. It provides galvanic isolation between the input and output sides so a low-voltage signal can be sensed and processed in a high-voltage domain without a direct electrical connection. An input analog signal drives an LED, and a photodetector plus an isolated amplifier reproduce an output signal on the other side, typically proportional to the input. Key benefits are a high isolation voltage rating, good common‑mode transient immunity, low input bias/offset, and suitability for wide‑temperature operation. Applications include isolated sensing (voltage/current), motor drives, power supplies, and instrumentation where signal integrity must be preserved across the isolation barrier. It uses an 8-pin package (DIP/SOIC) with separate input and output supplies, and is intended for analog signal transfer rather than digital communication.

Equivalent parts (isolated analog amplifiers) to HCPL-7860 include:
- TI AMC1300 / AMC1301
- Analog Devices ADuM1250 / ADuM1251
Note: check exact specs (isolation voltage, gain, bandwidth, input/output ranges) with a distributor cross-reference (Digi-Key, Mouser) for a precise replacement.

- Pin count: 8 pins (DIP-8/SO-8).
- Function: An optically isolated analog amplifier. It uses an input LED to optically couple to a downstream amplifier on the isolated output side, providing galvanic isolation between input and output for signal conditioning.

- Manufacturer: Broadcom Inc. (the Broadcom/Avago lineage).
- What kind of company: A global semiconductor company that designs and sells analog, digital, and mixed-signal ICs (fabless, outsourcing fabrication to foundries).

- Isolated amplification for current/voltage sensing in power electronics (DC-DC converters, motor drives, inverters)
- Instrumentation front-ends in energy meters, solar inverters, battery-management systems
- Industrial automation and PLC I/O isolation
- Medical and safety-critical sensing requiring galvanic isolation
- Data acquisition systems needing high common-mode isolation between sensor and controller
Note: HCPL-7860 provides galvanic isolation while conditioning and transmitting low-level signals to the controller.

HCPL-7860 is an 8-pin optically isolated amplifier in a DIP-8 package; a matching SO-8 (surface-mount) version is also available.