HCPL-7851

The HCPL-7851 is isolation amplifiers that provide 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. These devices consist 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 may be purchased as a standard product (HCPL-7850), with full MIL-PRF-38534 Class H testing (HCPL-7851), with MIL-PRF-38534 Class E testing (Class K with exceptions) or from the DLA Standard Microcircuit Drawing (SMD) 5962-97557.

• Performance guaranteed over full military temperature range: -55° C to +125° C
• Manufactured and tested on a MIL-PRF-38534 certified line
• Hermetically sealed packages
• Dual marked with device part number and DLA drawing number
• QML-38534, Class H and Class E
• HCPL-7840 function compatibility
• High common mode rejection (CMR): 8 kV/µs at VCM = 1000 V
• 5% gain tolerance
• 0.1% nonlinearity
• Low off set voltage and off set temperature coeffi cient
• 100 kHz bandwidth