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參數(shù)資料
| 型號： | LC72121V |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | PLL Frequency Synthesizers 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> | 375K |
| 代理商： | LC72121V |
IF Counter Operation
Applications must first, before starting an IF count operation reset the IF counter by setting CTE in the serial data to 0.
The IF counter operation is started setting CTE in the serial data from 0 to 1. Although the serial data is latched by
dropping the CE pin from high to low, the IF signal input to the IFIN pin must be provided within the wait time from the
point CE goes low. Next, the readout of the IF counter after measurement is complete must be performed while CTE is
still 1, since the counter will be reset if CTE is set to 0.
Note: If IF counting is used, applications must determine whether or not the IF IC SD (station detect) signal is present in
the microcontroller software, and perform the IF count only if that signal is asserted. This is because auto-search
techniques that use IF counting only are subject to incorrect stopping at points where there is no station due to IF
buffer leakage.
Note that the LC72121 input sensitivity can be controlled with the IFS bit in the serial data.
Reduced sensitivity mode (IFS = 0) must be selected when this IC is used in conjunction with an IF IC that does
not provide an SD output and auto-search is implemented using only IF counting.
IFIN Minimum Sensitivity Standard
No. 5815-16/23
LC72121, 72121M, 72121V
IFS data
0.4
≤
f < 0.5
0.5
≤
f < 8
40 mVrms
8
≤
f
≤
12
1(Normal mode)
40 mVrms (0.1 to 3 mVrms)
40 mVrms (1 to 15 mVrms)
0 (Degraded sensitivity mode)
70 mVrms (5 to 10 mVrms)
70 mVrms
70 Vrms (30 to 40 mVrms)
Input frequency : f [MHz]
Note: Values in parentheses are actual performance values that are provided for reference purposes.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC72121 | PLL Frequency Synthesizers for Electronic Tuning |
| LC72121M | PLL Frequency Synthesizers for Electronic Tuning |
| LC72122V | PLL Frequency Synthesizer for Portable Equipment Electronic Tuning |
| LC72130 | AM/FM PLL Frequency Synthesizers(AM/FM鎖相環(huán)頻率合成器) |
| LC72131 | AM/FM PLL Frequency Synthesizers(AM/FM鎖相環(huán)頻率合成器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC72121V-D-MPB-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack |
| LC72121V-D-TLM-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Tape and Reel |
| LC72121V-TLM-E | 功能描述:時(shí)鐘合成器/抖動清除器 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 |
| LC72122V | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Portable Equipment Electronic Tuning |
| LC72122V-MPB-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack |
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