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參數(shù)資料
| 型號： | TDA4321XS |
| 廠商： | SIEMENS A G |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO DEMODULATOR, PDSO20 |
| 封裝： | TSSOP-20 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 100K |
| 代理商： | TDA4321XS |
FS: 04/93
Page 13
SIEMENS AG
IC-SPECIFICATION
TDA 4321 XS
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Diagrams
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created
by patent grant or registration of a utility model or design, are reserved.
HL DOK
V66047-S1665-B100-G1
5.10.98
UF (V)
VF Characteristic
-80
-60
-40
-20
0
UiIF (dBm)
5
VF - Dynamic
VF - Dynamic :The dynamic range of VF voltage is determined by
the test points M1 through M4 as follows:
M1: test point (at ViIF= -60 dBm) supplies VF (M1)
M2: test point (at ViIF= -20 dBm) supplies VF (M2)
M3: test point (at ViIF= -90 dBm) supplies VF (M3)
M4: test point (at ViIF= +5 dBm) supplies VF (M4)
Hence follows :
UF (M4) - UF (M2)
MVFmax:= - 20 dBm+––––––––––––––––– × 40 dB
UF (M2) - UF (M1)
UF (M1) - UF (M3)
MVFmin:= - 60 dBm - ––––––––––––––––– × 40 dB
UF (M2) - UF (M1)
VF - Dynamic = MVFmax - MVFmin
M 2
M 1
M 3
M 4
MVFmin
MVFmax
2.5
D1
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