IC-DI datasheet(2/15 Pages) ICHAUS

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iC-DI

DUAL SENSOR INTERFACE

Rev C2, Page 2/15

DESCRIPTION

iC-DI is a monolithic interface iC with two inde-

pendent switching channels which enables digital

sensors to drive peripheral elements, such as pro-

grammable logic controllers (PLC) and relays, for ex-

ample.

The switches can be operated as push-pull, high-

side or low-side switches using inputs QCFG1 and

QCFG2 (open, high and low) and are enabled or dis-

abled via input OEN. They are designed to cope with

high driver currents of 100 mA (RSET = 8.2 kΩ), are

current limited and also short-circuit-proof in that they

shut down should excessive temperature or an over-

load occur. The output current limit can be set via an

external resistor at ISET.

The protective overload feature is included here as

an integrator so that capacitive loads with low repeat

rates can be switched without the protective circuitry

cutting in. In the event of excessive temperature an

error message is generated immediately.

Errors are signalled by two open-collector outputs:

NOVL (for excessive temperature and overloads) and

NUVD (for low voltage at VBR or voltages VCC and

VCC3, generated internally). The output switches

are shut down with all types of error.

To avoid errors occurring when the device is switched

on the outputs remain at high impedance for ca.

50 ms after the low voltage threshold has been ex-

ceeded.

Sensor interface iC-DI has an integrated switching

converter which generates voltages VCC (5 V) and

VCC3 (3.3 V) with the aid of two back-end series-

regulators. If only a low current is required inductor

LVH may be omitted; the series regulators are then

powered directly by VBR.

Input INV1 permits the input signal at channel 1 (IN1)

to be inverted.

The connected sensor can be parameterised using

the feedback channel with a high volt input (CFI →

CFO).

IC-DI Datasheet(PDF) 2 Page - IC-Haus GmbH

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