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High CMR Line Receiver

Optocouplers

Technical Data

HCPL-2602

HCPL-2612

CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to

prevent damage and/or degradation which may be induced by ESD.

Functional Diagram

Features

• 1000 V/

Mode Rejection (CMR) at

and 3.5 kV/

HCPL-2612

• Line Termination Included –

No Extra Circuitry Required

• Accepts a Broad Range of

Drive Conditions

• LED Protection Minimizes

LED Efficiency Degradation

• High Speed: 10 MBd

(Limited by Transmission

Line in Many Applications)

• Guaranteed AC and DC

Performance over

Temperature: 0

• External Base Lead Allows

“LED Peaking” and LED

Current Adjustment

• Safety Approval

UL Recognized – 2500 V rms

for 1 Minute

CSA Approved

• MIL-STD-1772 Version

Available (HCPL-1930/1)

A 0.1

µF bypass capacitor must be connected between pins 5 and 8.

Applications

• Isolated Line Receiver

• Computer-Peripheral

Interface

• Microprocessor System

Interface

• Digital Isolation for A/D,

D/A Conversion

• Current Sensing

• Instrument Input/Output

Isolation

• Ground Loop Elimination

• Pulse Transformer

Replacement

• Power Transistor Isolation

in Motor Drives

Description

The HCPL-2602/12 are optically

coupled line receivers that

combine a GaAsP light emitting

diode, an input current regulator

and an integrated high gain photo

detector. The input regulator

serves as a line termination for

line receiver applications. It

clamps the line voltage and

regulates the LED current so line

reflections do not interfere with

circuit performance.

The regulator allows a typical

LED current of 8.5 mA before it

starts to shunt excess current.

The output of the detector IC is

1

2

3

4

8

7

6

5

IN–

IN+

GND

V

VCC

O

VE

NC

CATHODE

LED

ON

OFF

ON

OFF

ON

OFF

ENABLE

H

H

L

L

NC

NC

OUTPUT

L

H

H

H

L

H

TRUTH TABLE

(POSITIVE LOGIC)

SHIELD

5965-3585E