HCPL-786J Datasheet (Agilent) - Optically Isolated Sigma-Delta Modulator

HCPL-786J, Optically Isolated Sigma-Delta Modulator

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.

1 2 Input Current 3 4 H

Agilent HCPL-7860/HCPL-786J Optically Isolated Sigma-Delta (Σ ∆) Modulator Data Sheet In operation, the HCPL-7860/ HCPL-786J Isolated Modulator (optocoupler with 3750 VRMS dielectric withstand voltage rating) converts a lowbandwidth analog input into a high-speed 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 on-chip sampl

HCPL-786J Features

* 12-bit Linearity

* 200 ns Conversion Time (PreTrigger 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 mV Input Range with Single 5 V S