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參數(shù)資料
| 型號(hào)： | LC72136N |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | PLL Frequency Synthesizer for Electronic Tuning(用于電子調(diào)諧的鎖相環(huán)頻率合成器) |
| 中文描述： | 鎖相環(huán)頻率合成器電子調(diào)諧（用于電子調(diào)諧的鎖相環(huán)頻率合成器） |
| 文件頁數(shù)： | 16/23頁 |
| 文件大?。?/td> | 319K |
| 代理商： | LC72136N |
No. 5608-16/23
LC72136N, 72136NM
IF Counter Structure
The LC72136N IF counter is a 20-bit binary counter. The result of the count can be read out serially, MSB first, from the
DO pin.
IF frequency (Fc) measurement consists of determining how many pulses enter the IF counter in a specified
measurement time (GT).
Fc =
(C = Fc
×
GT)
C: count value (number of pulses)
Sample IF Counter Frequency Calculations
1. For a measurement time (GT) of 32 ms and a count value (C) of 53980 (hexadecimal), which is 342,400 (decimal)
IF frequency (Fc) = 342,400 ÷ 32 ms = 10.7 MHz
2. For a measurement time (GT) of 8 ms and a count value (C) of E10 (hexadecimal), which is 3600 (decimal)
IF frequency (Fc) = 3600 ÷ 8 ms = 450 kHz
C
GT
GT1
GT0
Measurement time
Measurement period (GT) (ms)
Wait time (t
WU
) (ms)
3 to 4
0
0
4
0
1
8
3 to 4
1
0
32
7 to 8
1
1
64
7 to 8
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| LC72137 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer |
| LC72137_11 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer |
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