描述 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.

特性 Features

? 1000 V/μs minimum Common Mode Rejection (CMR) at

VCM = 50 V for HCPL-2602 and 3.5 kV/μs minimum

CMR at VCM = 300 V for 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°C to 70°C

? External base lead allows “LED peaking” and LED current adjustment

? Safety approval

UL recognized – 3750 V rms for 1 Minute

CSA approved

? MIL-PRF-38534 hermetic version available (HCPL-1930/1)

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