Description

The ACPL-C79B/C79A/C790 isolation amplifers are designed for current and voltage sensing in electronic power converters in applications including motor drives and renewable energy systems. In a typical motor drive implementation, current ?ows through an external resistor and the resulting analog voltage drop is sensed by the isolation amplifer. A di?erential output voltage that is proportional to the current is created on the other side of the optical isolation barrier.

Features

? ±0.5 High Gain Accuracy (ACPL-C79B)

? –50 ppm/°C Low Gain Drift

? 0.4 mV Input O?set Voltage

? 0.05 Excellent Linearity

? 62 dB SNR

? 200 kHz Wide Bandwidth

? 3 V to 5.5 V Wide Supply Range for Output Side

? –40°C to +105°C Operating Temperature Range

? Advanced Sigma-Delta (∑-?) A/D Converter Technology

? Fully Di?erential Isolation Amplifer

? 15 kV/μs Common-Mode Transient Immunity

? Compact, Auto-Insertable Stretched SO-8 Package

? Safety and Regulatory Approvals:

– IEC/EN/DIN EN 60747-5-5: 1414 Vpeak working

insulation voltage

– UL 1577: 5000 Vrms/1min double protection rating

– CSA: Component Acceptance Notice #5

Applications

? Current/Voltage Sensing in AC and Servo Motor Drives

? Solar Inverters, Wind Turbine Inverters

? Industrial Process Control

? Data acquisition systems

? Switching Power Supply Signal Isolation

? General Purpose Analog Signal Isolation

? Traditional Current Transducer Replacements