HCPL-786J Datasheet | Avago Technologies

Description The HCPL-7860/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-7860/HCPL-786J Isolated Modulator converts a low-bandwidth analog input into a highspeed one-bit data stream by means of a Sigma-Delta (Σ- ∆) 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. Features - 12-bit Linearity - 200 ns Conversion Time (Pre-Trigger Mode 2 with HCPL-0872) - 12-bit Effective Resolution with 5 µs Signal Delay (14-bit with 102 µs) (with HCPL-0872) - Fast 3 µs Over-Range Detection (with HCPL-0872) - ± 200 m V 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 k V/µs Isolation Transient Immunity - Safety Approval: UL 1577, CSA and IEC/EN/DIN EN 60747-5-5 Applications - Motor Phase and Rail Current Sensing - Data Acquisition Systems - Industrial Process Control - Inverter Current Sensing - General Purpose Current Sensing and Monitoring Input Current 2 SIGMA DELTA MOD./ 3 ENCODE DECODE 7 6 45 HCPL-7860 HCPL-0872 or Digital Filter MCU or DSP NOTE: A 0.1 μF bypass capacitor must be connected between pins VDD1 and GND1 and between pins VDD2 and GND2. CAUTION: It is advised that normal static precautions be taken in handling and assembly of this ponent to prevent damage and/or degradation which may be induced by ESD. The ponents featured in this datasheet are not to be used in military or aerospace applications or environments. Pin...