CXA2555Q
RF AC Characteristics Graphs (Pin 22)
Frequency response
Boost gain characteristics
28
8
7
1
Rfc =6.8kΩ,
L/H
RF C =
VC
1
2
H/H
RF C =
VC
Rbst = 3.9kΩ
2
6
26
24
22
20
H/L
Rfc = 6.8kΩ
L/L
5
4
3
2
1
0
–1
10–1
100
101
0
5
10
15
20
Frequency [MHz]
Rbst [kΩ]
Cut-off frequency
VCA characteristics
25
20
15
10
5
35
30
25
20
15
10
1
2
Rbst = 0Ω, RF C =
VC
H/H Mode
4
6
8
10
12
14
16
18
20
0.8
1.0
1.2
1.4
1.6
1.8
Rfc [kΩ]
RF C [V]
Notes) In the graphs above,
Rfc: FC C (pin 26) external resistor value
Rbst: BST C (pin 27) external resistor value
To ensure stable operation, it is recommended to select Rfc value of 6.2kΩ and above, and Rbst of 10kΩ
and below in all cases.
– 19 –
SONY [ SONY CORPORATION ]
