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參數(shù)資料
| 型號(hào)： | TDA7326 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | AM-FM Radio Frequency Synthesizer(AM-FM無線頻率合成器) |
| 中文描述： | 上午- FM收音機(jī)頻率合成器（上午，調(diào)頻無線頻率合成器） |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大小： | 183K |
| 代理商： | TDA7326 |
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f
REF
= 1KHz
F
VCO
= (64
PC + SC + 64)
f
REF
AMSWALLOW MODE
F
VCO
= (DIV_VAL+64)
f
REF
swallow 6bit
f
REF
= 2.5KHz
F
VCO
= (32
PC + SC + 32)
f
REF
F
VCO
= (DIV_VAL+32)
f
REF
swallow 5bit (bit SC5 = 0)
AMDIRECT MODE
F
VCO
= (DIV_VAL+1)
f
REF
a) CONDITIONS:
FM MODE (f
RF
= 98.1MHz, f
REF
= 25KHz; IF = 10.7MHz
it follows: that F
VCO
= 98.1 + 10.7= 108.8MHz
DIV_VAL =F
VCO
f
ref
- 32 =4352 - 32 = 4320 = 10 E 0 Hex
=
5.2: Examples
1
0
0
0
0
1
1
1
0
0
0
0
0
0
PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 SC5 SC4 SC3 SC2 SC1 SC0
SC = 0 (*)
binary
PC = 135
b) CONDITIONS:
FM MODE (f
RF
= 98.8MHz, f
REF
= 25KHz; IF = 10.7MHz
it follows: F
VCO
= 98.8 + 10.7 = 109.5MHz
DIV_VAL = 4380 - 32 = 4348 = 10 FC Hex
=
1
0
0
0
0
1
1
1
0
1
1
1
0
0
PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 SC5 SC4 SC3 SC2 SC1 SC0
SC = 28 (*)
binary
PC = 135
NOTE: (*) The bit SC5 isFORCED = 0,and higherweigth bits are left shift ed one position.
TDA7326
11/16
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