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PT2268 V2.5

- 9 -

April, 2006

Remote Control Encoder

PT2268

APPLICATION CIRCUIT

PT2268 IR Transmitter Application Circuit

I1

Vcc

455KHz

220pF

R

PNP

47 F(see Layout Note)

µ

220pF

+

_

3V

Battery

IR LED

2

Ω

+

I2

I3

I4

I5

I6

I7

I8

OS C2

TXOUT

C4

C5

C6

Vss

OS C1

Notes:

1. C3 (default value)=1. For more details, please refer to Start Word Custom Code Section.

2. Resistor (R) is the Current Limit Impedance whose value must be greater than 220Ω. Resistor (R)

Recommended Value=1KΩ

Layout Note: Place 47

µF capacitor as near as possible to the PT2268's VSS Pin.