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ACPL-785J Datasheet, PDF (1/20 Pages) AVAGO TECHNOLOGIES LIMITED – Isolation Amplifier with Short Circuit and Overload Detection
ACPL-785J
Isolation Amplifier with Short Circuit and Overload Detection
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
Features
Avago’s Isolation Amplifier with Short Circuit and
Overload Detection makes motor phase current sensing
compact, affordable and easy-to-implement while satis-
fying worldwide safety and regulatory requirements.
• Output Voltage Directly Compatible with A/D
Converters (0 V to VREF)
• Fast (3 µs) Short Circuit Detection with Transient Fault
Rejection
Applications
• Motor phase and rail current sensing
• Power inverter current and voltage sensing
• Industrial process control
• Data acquisition systems
• General purpose current and voltage sensing
• Traditional current transducer replacements
• 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
• 25 kV/µs Isolation Transient Immunity
• Regulatory Approvals: UL, CSA, IEC/EN/DIN EN 60747-
5-5 (1414 Vpeak Working Voltage)
Low Cost Three Phase Current Sensing with Short Circuit and Overload Detection
RSENSE1
RSENSE2
M
3 PHASE
MOTOR
RSENSE3
ISOLATION BOUNDARY
1 VIN+
2 VIN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
VOUT 12
VREF 11
7
10
8
ACPL-785J
9
ISOLATION BOUNDARY
1 VIN+
2 VIN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
VOUT 12
VREF 11
7
10
8
ACPL-785J
9
ISOLATION BOUNDARY
1 VIN+
2 VIN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
VOUT 12
VREF 11
7
10
8
ACPL-785J
9
+5 V
SHORT CIRCUIT FAULT
MICRO
CONTROLLER
A/D
CONVERTER
VREF
3 PHASE ABSOLUTE
VALUE OUTPUT
+
–
+
–
VTH
OVERLOAD
FAULT
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. The components
featured in this datasheet are not to be used in military or aerospace applications or environments.