ACPL-C87AU-500E

Instrumentation, Op Amps, Buffer Amps Overview

The Broadcom ACPL-C87AU-500E is a precision optically isolated voltage sensor featuring sigma-delta modulation and chopper-stabilized amplifiers. It provides unity gain (1 V/V) with ±1% tolerance, a 2V nominal input range, and a 1-GΩ input impedance. The device operates on a single 5V supply for the input side (4.5V to 5.5V) and 3V to 5.5V for the output side. Key electrical parameters include a 100-kHz bandwidth, 15 kV/µs common-mode transient immunity, and an operating temperature range of –40°C to +105°C. It utilizes an active-high shutdown pin to reduce current consumption.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Advanced sigma-delta modulation technology combined with chopper-stabilized amplifiers for high precision
• Differential output configuration providing superior isolation-mode noise rejection
• Active-high shutdown pin functionality for power-sensitive applications
• Compact auto-insertable stretched SO-8 package design

Instrumentation, Op Amps, Buffer Amps Applications

• Isolated DC-bus voltage sensing in solar inverters
• Isolated DC-bus voltage sensing in wind turbine inverters
• Isolated voltage sensing in AC and servo motor drives
• Signal isolation in data acquisition systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix '500E' confirms tape-and-reel packaging containing 1000 units per reel. Confirm RoHS compliance status and IEC/EN/DIN EN 60747-5-5 safety approval requirements match the application's insulation voltage needs. Ensure the ordering part number aligns with the required gain tolerance specifications for the target circuit design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a unity gain (1 V/V) response with ±1% accuracy is required. The ACPL-C87A variant offers higher precision than the ACPL-C870 but lower precision than the ACPL-C87B. Consider the 1-GΩ input impedance for minimal loading effects on resistive dividers. Verify that the 15 kV/µs CMTI rating meets the noise environment requirements of the power converter system.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the ACPL-C87 family of precision optically isolated voltage sensors manufactured by Broadcom Limited. The family includes variants with different gain tolerances: ACPL-C87B (±0.5%), ACPL-C87A (±1%), and ACPL-C870 (±3%). All variants share similar functional architectures utilizing sigma-delta modulation and differential outputs within the same SSO-8 package form factor.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

ACPL-C87BT-500E

Instrumentation, Op Amps, Buffer Amps FAQ

How does the ACPL-C87AU-500E handle high common-mode noise?

It implements sigma-delta modulation and chopper-stabilized amplifiers to provide excellent isolation-mode noise rejection and a common-mode transient immunity of 15 kV/µs.

What is the function of the SHDN pin?

The active-high shutdown pin reduces the input side supply current (IDD1) to approximately 15 µA when enabled, making the device suitable for battery-powered or power-sensitive applications.