Description

The HCPL-7820/7825 high CMR isolation amplifier consists of a sigma-delta analog-to-digital converter optically coupled to an integrated output digital-to-analog converter. When used with a shunt resistor in the current path, the HCPL-7820/7825 provides a cost-effective, auto-insertion compatible current sense solution.

Features

• Fast Propagation Delays for Over-Current and Fault Detection Sensing

• High Common Mode Rejection (CMR): 30 kV/µs at VCM = 1000 V*

• 3 Gain Tolerance: HCPL-7820 5 Gain Tolerance: HCPL-7825

• 0.05 Nonlinearity

• Low Offset Voltage and Offset Drift vs. Temperature

• 200 kHz Bandwidth

• Performance Specified for Common Motor Control Applications over -40°C to 100°C Temperature Range

• Worldwide Safety and Regulatory Approval: UL 1577 (3750 V rms/1 Min), VDE 0884 and CSA

• Compact Auto-Insertable Standard 8-Pin DIP Package

• Advanced Sigma-Delta (Σ∆) A/D Converter Technology

• 1 µm CMOS IC Technology

Applications

• Motor Phase and Rail Current Sensing

• General Purpose Current Sensing and Monitoring

• High-Voltage Monitoring

• Switched Mode Power Supply Signal Isolation

• General Purpose Analog Signal Isolation

• Transducer Isolation