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