SPRF2738A Datasheet, PDF (8/12 Pages) List of Unclassifed Manufacturers – Low Power FM/FSK IF IC

SPRF2738A
7. APPPLICATION CIRCUITS
7.1. 27MHz Wireless Mouse or Keyboard Receiver RF Module
SPRF2738A is almost compatible with MC3361
27.145MHz RF Input
Digital Data Output
C1
C3
2.2n
103
R1
10k
U1
SPRF2738A-PS031
tial ^ly *Note
fiden ^{On C10 C11}
se ^{103 104}
L1
10uH
R4
100
C5
C6
C7
F1
30
27
22
11
104
X1
26.690MHz
C12 Murata CFWM455E
39
C8
2.2n
R5
47k
TOKO 8128
L2
C13
n _VCC
o ^{U L1: Prevents Crystal from Base Tone Oscillating}
F1: 455k Band Pass Filter
C B Note: C8 capacitor value should be changed to 2.2nF when MC3361 is replaced.
lus ^{AA 7.2. 49MHz FM Baby Monitor Receiver}
Audio Output
p ^S _{49.86MHz RF Input}
un ^RC3
A₁₀₃
C1
1u _R2
27k
R1
C4
10k
0.1u
S _{R U1}
For ^{B SPRF2738A-PS031}
C10 C11
103 104
L1
3.3uH
C5
C6
30
27
F1
22
11
C7 C8
104 1n
R4
X1
C12 Murata CFWM455E
100
49.405MHz
39
TOKO 8128
L2
R5
C13
47k
VCC
L1: Prevents Crystal from Base Tone Oscillating
F1: 455k Band Pass Filter
© Sunplus Technology Co., Ltd.
8
Proprietary & Confidential
APR. 30, 2003
Version: 1.2