Broadcom ACPL-C87B Precision Optically Isolated Voltage Sensor, SOIC-8, 5kV

The Broadcom ACPL-C87B-000E is a precision optically isolated voltage sensor, specifically engineered as an optical isolation amplifier for accurate voltage sensing. With a 2V input range and a high 1GΩ input impedance, this component is ideally suited for isolated voltage sensing in electronic power converters, including motor drives and renewable energy systems.

In typical applications, a resistive voltage divider scales the DC-link voltage to match the sensor's input range. Key features include advanced sigma-delta (Σ-Δ) modulation technology, a 0 to 2V nominal input range, and an active-high shutdown pin for power management. The device offers a wide 3V to 5.5V supply range on the output side, ensuring flexibility in various circuit designs.

The ACPL-C87B delivers exceptional performance with a maximum input offset voltage of 9.9mV at 25°C, a typical input offset drift of 21µV/°C, and a non-linearity of just 0.1% at 25°C. Its input bias current is a mere -0.0015µA, ensuring minimal impact on measurement accuracy. The compact, auto-insertable stretched SO-8 package is designed for efficient manufacturing, and the device operates reliably across an extended temperature range of -40°C to 105°C.

This isolated voltage sensor meets rigorous safety standards, including IEC/EN/DIN EN 60747-5-5 with a 1414Vpeak working insulation voltage, UL 1577 with a 5000Vrms/1-minute double protection rating, and CSA component acceptance notice #5. With a wide 100kHz bandwidth and single-channel configuration, the ACPL-C87B ensures high-speed, accurate signal isolation for a range of industrial and energy applications.