HCPL-7840-000E

Instrumentation, Op Amps, Buffer Amps Overview

The HCPL-7840-000E is a single-channel optically isolated amplifier manufactured by Broadcom Limited. It operates within a supply voltage range of 4.5 V to 5.5 V and draws a typical operating supply current of 15.5 mA. The device provides a fixed gain of 18.48 dB with an input offset voltage (Vos) of 300 uV. It utilizes optic isolation technology and features a rise time of 3.4 μs. The component supports a maximum input current of 400 mA and offers an isolation voltage rating of 3.75 kVrms. It is housed in an 8-pin PDIP package designed for through-hole mounting.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Provides galvanic isolation between input and output circuits using optical transmission technology.
• Delivers precise signal amplification with a fixed gain characteristic suitable for precision applications.
• Features low input offset voltage to maintain high accuracy in signal conditioning tasks.
• Supports high common-mode transient immunity for reliable operation in electrically noisy environments.

Instrumentation, Op Amps, Buffer Amps Applications

• Precision measurement systems requiring isolated signal conditioning
• Industrial process control loops with ground potential differences
• Medical equipment needing patient isolation safety barriers
• Data acquisition systems interfacing with high-voltage sensors

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix '000E' to ensure RoHS compliance, as non-compliant variants like HCPL-7840 exist. Confirm the DIP-8 package type matches your PCB footprint requirements. Check for AEC-Q100 automotive qualification if deploying in vehicle electronics. Ensure the 3.75 kVrms isolation rating meets your system's safety standards. Validate that the 4.5 V to 5.5 V supply range aligns with your power design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high precision and low offset are critical, distinguishing it from the HCPL-7840 which has higher Vos. Consider the 18.48 dB fixed gain against other HCPL series options with different gain settings. Evaluate the 3.4 μs rise time against your bandwidth requirements compared to faster isolators. Ensure the through-hole PDIP package fits your assembly constraints versus surface-mount alternatives.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the HCPL family of optically isolated amplifiers from Broadcom. It shares the core isolation architecture with variants like HCPL-7800 but differs in offset voltage specifications. The HCPL-7840-000E represents the lead-free, RoHS-compliant version of the HCPL-7840 series. It serves as a specialized solution for applications demanding both isolation and analog signal integrity.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

HCPL-7840 is the non-RoHS equivalent. HCPL-7800-000E is a similar isolation amplifier but with different offset voltage characteristics. Verify pinout compatibility and gain specifications before substitution.