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Remote Control Encoder
PT2268
APPLICATION CIRCUIT
PT2268 IR Transmitter Application Circuit
+
3V
Battery
_
+
47µF(see Layout Note)
I1
I2
I3
I4
I5
I6
I7
I8
Vcc
220pF
455KHz
220pF
OSC1
OSC2
TXOUT
C4
R
PNP
IR LED
C5
C6
2Ω
Vss
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 47µF capacitor as near as possible to the PT2268's VSS Pin.
PT2268 V2.5
- 9 -
April, 2006
PTC [ PRINCETON TECHNOLOGY CORP ]
