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HCPL788J
Isolation Amplifier with Short Circuit and Overload Detection Technical Data HCPL-788J Features • 25 kV/µs Isolation Transient Immunity • Regulatory Approvals: UL, CSA, IEC/EN/DIN EN 60747-5-2 (891 Vpeak Working Voltage) • Absolute Value Signal Output for Overload Detection • 1 µV/°C Offset Change vs. Temperature • SO-16 Package • -40 °C to +85°C Operating Temperature Range • Output Voltage Directly Compatible with A/D Converters (0 V to VREF ) • Fast (3 µs) Short Circuit Detection with Transient Fault Rejection Low Cost Three Phase Current Sensing with Short Circuit and Overload Detection ISOLATION BOUNDARY 1 2 RSENSE1 VIN+ VIN- +5 V 16 SHORT CIRCUIT FAULT 15 3 FAULT 14 4 ABSVAL VOUT 13 5 6 VREF 7 8 12 MICRO CONTROLLER 11 10 HCPL-788J 9 ISOLATION BOUNDARY 1 RSENSE2 VIN+ 2 VIN- 16 15 3 FAULT 14 4 ABSVAL VOUT 13 5 6 VREF 7 8 M A/D CONVERTER 12 VREF 11 10 HCPL-788J 9 3 PHASE MOTOR ISOLATION BOUNDARY 1 RSENSE3 VIN+ 2 VIN- 3 PHASE ABSOLUTE VALUE OUTPUT 16 15 3 FAULT 14 4 13 + 5 ABSVAL VOUT 12 – 6 VREF 7 8 11 10 HCPL-788J OVERLOAD FAULT 9 + – VTH Agilent’s Isolation Amplifier with Short Circuit and Overload Detection makes motor phase current sensing compact, affordable and easy-to-implement while satisfying worldwide safety and regulatory requirements. CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/ or degradation which may be induced by ESD.
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