Description

The ACPL-790B/790A/7900 isolation amplifers were 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 flows through an external resistor and the resulting analog voltage drop is sensed by the isolation amplifer. A differential 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-790B)

-50 ppm/°C Low Gain Drift

0.6 mV Input Offset Voltage

0.05 Excellent Linearity

60 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 Differential Isolation Amplifer

15 kV/s Common-Mode Transient Immunity

Compact, Auto-Insertable DIP-8 Package

Safety and Regulatory Approvals (pending):

– IEC/EN/DIN EN 60747-5-5: 891 Vpeak working insulation voltage

– UL 1577: 5000 Vrms/1 min 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