epc110

To have still digital compatible signals a level conversion is necessary. Below you find some examples for such circuits for converting OUTH

levels to full CMOS compatible digital output.

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24.01.2011

Page 1

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OUTH

LED

OUTN

PD

VDD33

VDD

epc110

GND

VDD18

GND

+3.3V

OUTH

R1

3k6

R2

12k

R4

10k

R3

4k7

T1

BC846 B

Figure 9: Non-inverting, low power level shifter (additional current approx. 0.6mA)

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24.01.2011

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OUTH

LED

OUTN

PD

VDD33

VDD

epc110

GND

VDD18

GND

+3.3V

OUTH

R1

1k5

R3

33k

T1

BC846 B

R2

10k

<Title>

<name>

File:

This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission

.

24.01.2011

Page 1

<xx>

OUTH

LED

OUTN

PD

VDD33

VDD

epc110

GND

VDD18

GND

+3.3V

OUTH

R1

3k6

R2

12k

R4

22k

R3

4k7

T1

BC846 B

R5

33k

T2

BC846 B

Figure 10: Simple inverting level shifter

(additional current approx. 1.6mA or 2.6mA)

Figure 11: Inverting, low power level shifter

(additional current approx. 0.8 ... 1.0mA)

© 2011 ESPROS Photonics Corporation

Characteristics subject to change without notice

10

Datasheet epc110 - V2.1

www.espros.ch