参数资料
型号: LC72134M
元件分类: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 160 MHz, PDSO24
封装: MFP-24
文件页数: 9/27页
文件大小: 463K
代理商: LC72134M
Structure of the Programmable Divider
Structure of the Main PLL Programmable Divider
Sample Main Programmable Divider Divisor Calculations
For FM with a step size of 50 kHz (DVS = 1, SNS = *: FMINa selected)
FM RF = 90.0 MHz (IF = +10.7 MHz)
FM VCO = 100.7 MHz
Main PLL fref = 25 kHz (R0 = 1, R1 = 1, R2 = 0, R3 = 0)
100.7 MHz (FM VCO)
÷ 25 kHz (fref) ÷ 2 (for the FMIN 1/2 prescaler) = 2014 → 07DE (hexadecimal)
*: Don’t care
No. 5814-17/27
LC72134M
DVS
SNS
Input pin
Set divisor
Actual divisor
Input frequency range
A
1
*
FMINa
272 to 65535
Twice the set value
10 to 160 MHz
B
0
1
AMIN
272 to 65537
The set value
2 to 40 MHz
C
0
AMIN
4 to 4095
The set value
0.5 to 10 MHz
For SW with a step size of 5 kHz (DVS = 0, SNS = 1: AMIN high-speed operation selected)
SW RF = 21.75 MHz (IF = +450 kHz)
SW VCO = 22.20 MHz
Main PLL fref = 5 kHz (R0 = 0, R1 = 1, R2 = 0, R3 = 1)
22.2 MHz (SW VCO)
÷ 5 kHz (fref) = 4440 → 1158 (hexadecimal)
For MW with a step size of 10 kHz (DVS = 0, SNS = 0: AMIN low-speed operation selected)
MW RF = 1000 kHz (IF = +450 kHz)
WM VCO = 1450 kHz
Main PLL fref = 10 kHz (R0 = 0, R2 = 0, R3 = 1)
1450 kHz (MW VCO)
÷ 10 kHz (fref) = 145 → 091 (hexadecimal)
相关PDF资料
PDF描述
LC72135M PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20
LC72136NM PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24
LC72140M PLL FREQUENCY SYNTHESIZER, 160 MHz, PDSO24
LC72140 PLL FREQUENCY SYNTHESIZER, 160 MHz, PDIP24
LC72146 PLL FREQUENCY SYNTHESIZER, 40 MHz, PDIP24
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