Princeton Technology Corp.

Tel: 886-2-29162151

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Remote Control Encoder

PT2268

PT2268 v 2.4

Page 3

Revised March 1999

PT2268 IR Transmitter Application Circuit

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 220

Ohms. Resistor ( R ) Recommended Value = 1 K Ohms

Layout Note: Place 47uF capacitor as near as possible to the PT2268's Vss Pin.

I1

I2

I3

I4

I5

I6

I7

I8

V c c

O S C 1

O S C 2

TX OU T

C 4

C 5

C 6

V ss

220P F

R

PN P

4 7uF ( see La yo ut N o te )

220P F

+

_

3V

B a ttery

IR L E D

2 O h m s

P T 2268

+