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參數(shù)資料
| 型號(hào)： | LC72121 |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 160 MHz, PDIP22 |
| 封裝： | DIP-22 |
| 文件頁數(shù)： | 7/23頁 |
| 文件大小： | 377K |
| 代理商： | LC72121 |
Structure of the IF Counter
The LC72121 IF counter is a 20-bit binary counter, and takes the IF signal from the IFIN pin as its input. The result of
the count can be read out serially, MSB first, from the DO pin.
The IF frequency (Fc) is measured by determining how many pulses were input to the IF counter in the stipulated
measurement time, GT.
C
Fc =—— (C = Fc x GT)
C: Counted value (the number of pulses)
GT
No. 5815-15/23
LC72121, 72121M, 72121V
GT1
GT0
Measurement time
Measurement time (GT)
Wait time (tWU)
0
4 ms
3 to 4 ms
0
1
8
3 to 4 ms
1
0
32
7 to 8 ms
1
64
7 to 8 ms
IF Counter Frequency Measurement Examples
When the measurement time (GT) is 32 ms and the counted value (C) is 53980 (hexadecimal) or 342,400 (decimal).
IF frequency (FC) = 342400 ÷ 32 ms = 10.7 MHz
When the measurement time (GT) is 8 ms and the counted value (C) is E10 (hexadecimal) or 3600 (decimal).
IF frequency (FC) = 3600 ÷ 8 ms = 450 kHz
相關(guān)PDF資料 |
PDF描述 |
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| LC72121V | PLL FREQUENCY SYNTHESIZER, 160 MHz, PDSO24 |
| LC72121M | PLL FREQUENCY SYNTHESIZER, 160 MHz, PDSO24 |
| LC72131M | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20 |
| LC72134M | PLL FREQUENCY SYNTHESIZER, 160 MHz, PDSO24 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC72121_03 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers for Electronic Tuning |
| LC72121-D-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack 制造商:ON Semiconductor 功能描述:PLL FREQ SYNTHESIZER 制造商:ON Semiconductor 功能描述:FNFLD / PLL FREQUENCY SYNTHESIZER |
| LC72121M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers for Electronic Tuning |
| LC72121MA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:CMOS IC PLL Frequency Synthesizers for Electronic Tuning |
| LC72121MA-AH | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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