Broadcom HCPL-7510

Изоляция

Overview

The HCPL-7510 isolattion amplifier, linear current sensing IC is designed for current sensing in low-power electronic motor or servo drive applications. In a typical implementation, motor current flows through an external resistor and the resulting analog voltage drop is sensed by the HCPL-7510. An output voltage is created on the other side of the HCPL-7510 optical isolation barrier. The single-ended output voltage is proportional to the motor current. Since common-mode votlage swings of several hundred volts in tens of nanoseconds are common in modern switching inverter motor drives, the HCPL-7510 was designed to ignore very high common-mode transient slew rates (of at least 10 kV/µs).

The current sensor can also be used for general analog signal isolation applications. For general applications, we recommend the HCPL-7510 (gain tolerance of±3%). The HCPL-7510 utilizes Sigma-Deltaanalog-to-digital converter technology to delivery offset and gain accuracy and stability over time and temperature. This performance is delivered in a compact, auto-insert, industry standard 8-pin DIP package that meets worldwide regulatory safety standards. (A gull-wing surface mount option #300 is also available).

Features

Applications

• Logarithmic operation circuits
• Exponential operation circuits
• Multiplication circuits
• Division circuits
• Precision measurement
• Power control
• Information processing
• Weak signal detection
• Signal amplification
• Signal filtering