參數(shù)資料
型號: LC72122V
廠商: Sanyo Electric Co.,Ltd.
英文描述: PLL Frequency Synthesizer for Portable Equipment Electronic Tuning
中文描述: 鎖相環(huán)頻率合成調(diào)諧便攜式電子設(shè)備
文件頁數(shù): 14/22頁
文件大?。?/td> 346K
代理商: LC72122V
No. 6113-14/22
LC72122V
Programmable Divider Structure
Note:
*
Don’t care.
Sample Programmable Divider Divisor Calculations
1. For a 50 kHz FM step size (DVS = 1, SNS = *: FMIN selected)
FM RF = 90.0 MHz (IF = +10.7 MHz)
FM VCO = 100.7 MHz
PLL fref = 25 kHz (R0 to R1 = 1, R2 to R3 = 0)
100.7 MHz (FM VCO)
÷
25 kHz (fref)
÷
2 (FMIN: divide-by-two prescaler) = 2014
07DE (HEX)
2. For a 5 kHz SW step size (DVS = 0, SNS = 1: AMIN high-speed side selected)
SW RF = 21.75 MHz (IF = +450 kHz)
SW VCO = 22.20 MHz
PLL fref = 5 kHz (R0 to R2 = 0, R3 = 1)
22.2 MHz (SW VCO)
÷
5 kHz (fref) = 4440
1158 (HEX)
3. For a 9 kHz MW step size (DVS = 0, SNS = 0: AMIN low-speed side selected)
MW RF = 1008 kHz (IF = +450 kHz)
MW VCO = 1458 kHz
PLL fref = 3 kHz (R0 to R1 = 0, R2 to R3 = 1)
1458 kHz (MW VCO)
÷
3 kHz (fref) = 486
1E6 (HEX)
DVS
SNS
Input pin
Set divisor
Actual divisor: N
Input frequency range (MHz)
A
1
*
FMIN
272 to 65535
Twice the set value
10 to 250
B
0
1
AMIN
272 to 65535
The set value
2 to 40
C
0
0
AMIN
4 to 4095
The set value
0.5 to 10
相關(guān)PDF資料
PDF描述
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)
LC72132 AM/FM PLL Frequency Synthesizers(AM/FM鎖相環(huán)頻率合成器)
LC72133M PLL Frequency Synthesizer for Electronic Tuning(用于電子調(diào)諧的鎖相環(huán)頻率合成器)
LC72134M Dual PLL Frequency Synthesizer for FM Tuner Systems(用于FM調(diào)諧器的雙鎖相環(huán)頻率合成器)
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