W55RFS27T1B Datasheet, PDF (14/17 Pages) Winbond – SUPER-REGENERATION RF TRANSMITTER

W55RFS27T1B
4.1.4 Application Circuit for FCC
SW3 Left-turn
SW4 Right-Turn
ANTENNA
L2
5.6uH
Dependent on Antenna
L3
2.2uH
C6
15p
VDD
L1
270nH
C8
100p
C13
100p
L4
2.2uH
C7
100p
VDD
U1
1 _S3
S2 ¹⁶
2 _S4
S1 ¹⁵
3 _CKSEL0
TXOUT ¹⁴
4 _TEST
ID0 ¹³
5
CKSEL1
12
ID1
6 _ANT
X2 ¹¹
7
VSS
10
X1
8 _VDD
RESET ⁹
W55RFS27T1B
TXOUT
SW2
Backward
SW1 Forward
TXOUT
300
R5
LED
LED1
27.145MHz
Fundamental Crystal
BT1
2.2~5.5V
C18 +
C19
100u
47n
Title
Size
A
Date:
W55RFS27T1B Application Circuit For FCC(27MHz)
Document Number
{Doc}
Wednesday, July 14, 2004
Sheet
1
Rev
{RevCode}
of 1
-14-