cxa3025n Sony Electronics, cxa3025n Datasheet - Page 6

• Manufacturer Part Number: cxa3025n
• Description: All Band Tv Tuner Ic Vhf-catv-uhf
• Manufacturer: Sony Electronics

Application Circuit
IF OUT
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.
BAND SW
1n
ON: UHF
OFF: VHF
24
1
1n
4.7k
27P
+9V
23
2
10k
12.5t
4
4.7µ
PLL OUT
22
3
1T363
3.3k
3.5t
4
1n
47k
+9V
21
4
150P
15p
4p
1n
20
5
VC
0.5p (UK)
15µ
Circuit when using two varicap diodes for the UHF oscillator,
improving the oscillator stability and frequency variable range,
and using a double tune circuit for the IF tune circuit.
0.5 3.8 1.5t
CXA3025N
19
6
– 6 –
47k
Inductance constant
7p
2p
0.5p (UK)
L without indication is an air-core coil of 0.5mm diameter.
18
7
1n
100
17
8
1n
15p
47k
4p
VHF IN
16
9
1T363
1n
47k
0.5
3.2
2.5t
15
10
1p (UK)
1T362
UHF IN
0.5
3.2
1n
5.5t
14
11
0.5p (UK)
1T363
1n
16p
13
12
1n
1n
3.3k
22
1n
47k
51
51
68p (RH)
47k
VH
VL
47k
CXA3025N
+9V