HCPL-786J-000E

The HCPL-786J Optically Isolated Modulator and HCPL-0872 Digital Interface IC or digital filter together form an isolated programmable two-chip analog-to-digital converter. The isolated modulator allows direct measurement of motor phase currents in power inverters. In operation, the HCPL-786J Isolated Modulator converts a low-bandwidth analog input into a highspeed one-bit data stream by means of a Sigma-Delta (S-?) over-sampling modulator. This modulation provides for high noise margins and excellent immunity against isolation-mode transients. The modulator data and onchip sampling clock are encoded and transmitted across the isolation boundary where they are recovered and decoded into separate high-speed clock and data channels.

• 12-bit Linearity
• 200 ns Conversion Time (Pre-Trigger Mode 2 with HCPL-0872)
• 12-bit Effective Resolution with 5µs Signal Delay (14-bit with 102µs) (with HCPL-0872)
• Fast 3µs Over-Range Detection (with HCPL-0872)
• ± 200 mV Input Range with Single 5 V Supply
• 1% Internal Reference Voltage Matching
• Offset Calibration (with HCPL-0872)
• -40°C to +85°C Operating Temperature Range
• 15 kV/µs Isolation Transient Immunity
• Safety Approval: UL 1577, CSA and IEC/EN/DIN EN 60747-5-5