epc110

High speed detection rate design (refer also to datasheet epc112)

Figure 20 shows the epc 110 as an example in a high speed detection rate light barrier application with minimal part count. This design is

optimized for a fast reading of light beam interruptions. Where as the working principle is similar to the above example. This driver circuit

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25.01.2011

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OUTH

LED

OUTN

PD

VDD33

VDD

epc110

GND

VDD18

R2

13R

C1

10μF

Low ESR

GND

+3.3V

VDD

LED

= +12V

OUTH

OUTN

PD

epc300

R4

3k6

R3

10k

R1

47R

C3 100nF

C2 1μF

C5 4.7nF

C4 100nF

R5

12k

R7

10k

R6

4k7

Marked conductors must be short and low ohmic

IR LED

TSML1000

T1

BC846B

T2

BC846B

C2

The epc112 device with its very sensitive input PD needs a well decoupled power supply

Figure 20: High speed detection rate light barrier application with minimal part count

Notice:

The schematic is for illustrating the basic circuit idea only. For the real built up the designer has to take all other additional influence factors in

consideration too e.g. design rules, power rating, heat dissipation, ...

The following table shows the parameter allocation in the memory:

ROM RAM

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

0

16

1

1

0

1

1

0

0

0

0

0

0

0

0

0

1

FUSEBIT

1

17

0

0

1

1

1

1

0

0

0

1

1

1

0

0

0

FUSEBIT

2

18

0

0

0

0

1

0

1

0

1

1

1

1

1

1

1

FUSEBIT

3

19

don't use

FUSEBIT

4

20

don't use

FUSEBIT

Trimming

5

21

don't use

FUSEBIT

6

22

don't use

FUSEBIT

7

23

don't use

FUSEBIT Device Address

8

24

Lot no. LSB

FUSEBIT

Chip ID

9

25

Lot no. MSB

FUSEBIT

10

26

Chip ID

FUSEBIT

11

27

Factory use only

FUSEBIT

12

28

Revision no.

FUSEBIT

13

29

no function

FUSEBIT

14

30

no function

FUSEBIT

15

31

no function

FUSEBIT

Application

parameters

Figure 21: Detailed memory map epc110 “High speed”

Parameter settings can be done by writing complete 16 bit registers only.

© 2011 ESPROS Photonics Corporation

Characteristics subject to change without notice

22

Datasheet epc110 - V2.1

www.espros.ch