參數(shù)資料
型號: LV25450PNW
元件分類: 調(diào)諧器
英文描述: AUDIO TUNER, PQFP64
封裝: 10 X 10 MM, SQFP-64
文件頁數(shù): 14/40頁
文件大?。?/td> 1251K
代理商: LV25450PNW
LV25450PNW
Continued from preceding page.
Pin No.
Pin Function
Description
Equivalent Circuit
50
AM-RF-AGC
RF AGC rectifying capacitor
Determines the distortion for
low-frequency modulation.
Increasing the size of C50 :
Distortion
→ Improves
Response
→ Becomes slower
Reducing the size of C50 and C 51 :
Distortion
→ Degrades
Response
→ Becomes faster
VCC (61pin)
100
Ω
500
Ω
15k
Ω
750
Ω
50
1k
Ω
51
AM-RF-AGC
(Bypass)
Reducing the size of C51 :
Distortion
→ Degrades
Response
→ Becomes faster
51
50k
Ω
500
Ω
1k
Ω
52
AM-ANT-D
Provides the PIN diode drive current.
This is the antenna dumping current
output.
200
Ω
500
Ω
VCC_8V
52
53
FM N-AGC-IN
FM narrow AGC input
53
2.5k
Ω
2.2V
1k
Ω
10k
Ω
54
55
MIX-OUT
Mixer output
(common to FM and AM)
55
54
FM MIX
AM MIX
Continued on next page.
No.A1668-21/40
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