W55RFS27T1B Datasheet, PDF (13/15 Pages) Winbond – SUPER-REGENERATION RF TRANSMITTER

4.1.4 Application Circuit for FCC
W55RFS27T1B DataSheet
S W3 Le ft-tu rn
S W4 Rig ht-T urn
V DD
A NT E NNA
L2
5.6u H
Dependent on Antenna
L3
2.2u H
C6
15 p
L1
27 0nH
C8
10 0p
C13
10 0p
L4
2.2u H
C7
10 0p
V DD
U1
1 _S3
S 2 ¹⁶
2
S4
15
S1
3 _{CKS E L0}
T XOUT ¹⁴
4 _{T ES T}
ID0 ¹³
5 _{CKS E L1}
ID1 ¹²
6
A NT
11
X2
7 _{V SS}
X 1 ¹⁰
8 _{V DD}
RES E T ⁹
W5 5RFS 27T 1B
T XOUT
SW2
B ackward
S W1 Fo rward
T XOUT
30 0
R5
LE D
LE D1
27 .1 45MHz
Fundamental Crystal
BT1
2.2~5.5V C18 +
C19
10 0u
47 n
T itl e
W5 5RFS 27T 1B Ap pl ic atio n Ci rcui t For FCC(27MHz)
S ize
A
Docu ment Nu mber
{Do c}
Date:
We dne sda y, Ju ly 14 , 20 04
S hee t
1
of
Rev
{Re vCo de}
1
4.2 uC-Mode Control Signal
S2(~ENB)
Oscillator
S1(~TXD)
ANT
Chip disabled
Chip Enabled
3ms
Power down
13
Revision: A3.0
Publish Date: Feb. 2010