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
