HCPL7840 datasheet(12/12 Pages) HP

12 / 12 page

1-259

VOLTAGE

REGULATOR

CLOCK

GENERATOR

Σ∆

MODULATOR

ENCODER

LED DRIVE

CIRCUIT

DETECTOR

CIRCUIT

DECODER

AND D/A

FILTER

ISO-AMP

OUTPUT

VOLTAGE

REGULATOR

ISO-AMP

INPUT

ISOLATION

BOUNDARY

Figure 22. HCPL-7840 Block Diagram.

0.1 µF

+5 V

VOUT

2.00 K

+15 V

0.1 µF

-15 V

–

MC34081

10.0 K

HCPL-7840

10.0 K

150 pF

78L05

OUT

0.01

µF

GATE DRIVE

CIRCUIT

POSITIVE

FLOATING

SUPPLY

• • •

HV+

• • •

HV–

• • •

–

RSENSE

MOTOR

150 pF

0.1

µF

0.1

µF

2.00 K

Figure 26. Bottom Layer of Printed

Circuit Board Layout.

TO RSENSE+

TO RSENSE–

TO VDD1

TO VDD2

VOUT+

VOUT–

Figure 25. Top Layer of Printed

Circuit Board Layout.

Figure 24. Single-Supply Post-Amplifier Circuit.

0.1 µF

+5 V

VOUT

10.0 K

+5 V

0.1 µF

–

MC34071

10.0 K

HCPL-7840

R4B

20.0 K

150 pF

R4A

20.0 K

+5 V

150 pF

10.0 K

Figure 23. Recommended Application Circuit.

HCPL7840 Datasheet(PDF) 12 Page - Agilent(Hewlett-Packard)

HCPL7840 Datasheet(HTML) 12 Page - Agilent(Hewlett-Packard)

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