CXA1742Q
Application Circuit
Oscillator circuit
45MHz
IN
Vcc
10p
1.5µ
0.1µ
100p
89.88MHz
0.1µ
30
29
28
27
26
25
24
23
22
21
6p
0.47µ
20
19
18
17
16
15
14
13
12
11
31
RF AMP
Vcc
PSN
PSN
32
33
34
35
36
37
38
39
40
0.1µ
MIXER
1/2
Vcc
0.1µ
0.1µ
0.1µ
OSC
BPF0
BPF1
AGC
20k
51k
RSSI
0.1µ
BIAS
2.2µ
LIM
DET
2.2µ
2.2µ
Vcc
1
2
3
4
5
6
7
8
9
10
0.1µ
94k
220k
47k
0.1µ
82p
AUDIO
OUT
RSSI
OUT
Note) Use a 0.1µF capacitor for Pin 14 decoupling.
The IC malfunctions at a capacitance of 0.047µF or lower.
The oscillator circuit must be changed according to the crystal characteristics.
When designing PCB pattern, make PCB pattern so that Pins 3, 4, and 5 are connected correlatively.
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
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SONY [ SONY CORPORATION ]
