Description
The HCPL-7850/7851 is an isolation amplifier that provides accurate, electrically isolated and
amplified representations of voltage and current. When used with a shunt resistor to monitor
the motor phase current in a high speed motor drive, the device will offer superior reliability
compared with the traditional solutions such as current transformers and Hall-effect sensors. The HCPL-7850/7851 consists of a sigma-delta analog to-digital converter optically coupled to a digital-to-analog converter in a hermetically sealed package. The products are capable of operation and storage  over the full military temperature range and can be purchased as
either commercial product or with full MIL-PRF-38534 Class H testing or from the appropriate
DSCC drawing.

FEATUREs
• Performance Guaranteed over Full Military Temperature Range: –55˚C to +125˚C
• Manufactured and Tested on MIL-PRF-38534 Certified Line
• Hermetically Sealed Packages
• Dual Marked with Device Part Number and DSCC Drawing Number
• QML-38534, Class H
• HCPL-7840 Function Compatibility
• High Common Mode Rejection (CMR): 8 kV/µs at VCM = 1000 V
• 5% Gain Tolerance
• 0.1% Nonlinearity
• Low Offset Voltage and Offset Temperature Coefficient
• 100 kHz Bandwidth

APPLICATIONs
• Industrial and Military
• High Reliability Systems
• Harsh Industrial Environments
• Transportation, Medical, and Life Critical Systems
• General Purpose Analog Signal Isolation
• Motor Phase and Rail Current Sensing
• Inverter Current Sensing
• Switched Mode Power Supply Signal Isolation
• General Purpose Current Sensing and Monitoring