Evaluation Board IC-DI (including 2 samples)

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Product Information

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iC-DI is a monolithic interface iC with two independent switching channels which enables digital sensors to drive peripheral elements, such as programmable logic controllers (PLC) and relays, for example.

The switches can be operated as push-pull, highside or low-side switches using inputs QCFG1 and QCFG2 (open, high and low) and are enabled or disabled via input OEN. They are designed to cope with high driver currents of 100mA (RSET = 8.2 k), are current limited and also short-circuit-proof in that they shut down should excessive temperature or an overload 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 exceeded.

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 seriesregulators. 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).


• Sensor interface for light barriers and proximity switches, for example:


Symmetry Electronics (and its e-commerce division: SemiconductorStore.com) is an authorized iC-Haus distributor.


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Dual channel switches, configurable for high-side, low-side and push-pull operation
Switches are current limited
Push-pull operation with tristate function
Output current of up to 100mA per channel
Parallel connection of both channels possible
Channel 1 can be inverted (antivalent output)
Wide supply voltage range of 9 to 30 V
Sensor parameterisation via a feedback channel (up to 30 V)
Switching converters and regulators for 3.3/5 V voltage generation
Error detection with hysteresis with excessive temperature, overload and low voltage
Driver shutdown in the event of error
Error messaging via two open-collector outputs

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