epc110

The same principle applies to the counter and signal of OUTH.

Application

example

No. of

No. of

Long range

8

8

High speed

3

2

Table 2: Example: Settings based of filter coefficients INC and DEC

Light Pulse Detection Output OUTN

The epc110 contains two digital outputs to indicate that a valid signal of light pulses are received by the photo diode. The first output OUTN is

triggered, when the lower threshold is reached by the input signal (see Figure 5). This output is used usually to drive the output of the light

barrier. This is a fully CMOS compatible digital output.

Light Reserve Output OUTH

However, if the incoming signal is just at the trigger threshold of OUTN, an unstable situation can occur. Thus, a second output OUTH is

integrated with a higher trigger threshold to indicate that a certain 'light reserve' is reached (see Figure 5). This output is usually used to drive

a visible LED to indicate to the operator a stable detection function of the light barrier. To have not too short pulses OUTH, this signal is

stimulated by signal OUTH Filter and synchronized reseted by OUTN.

OUTN Filter

OUTH Filter

OUTN

OUTH

Emitter LED

Figure 7: synchronization OUTH with OUTN

The trigger threshold of OUTH is set usually approx. 50% above the trigger threshold of OUTN.

This output is not CMOS compatible. Its voltage is depending of the load according to Figure 8.

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.

OUTH high min.: 3.0V / + 85ºC

OUTH high max.: 3.6V / - 40ºC

OUTH high typ.

OUTH low max.

Voltage OUTH [V]

Figure 8: Output voltage versus output current of output OUTH

© 2011 ESPROS Photonics Corporation

Characteristics subject to change without notice

9

Datasheet epc110 - V2.1

www.espros.ch