參數(shù)資料
型號: MC1648D
廠商: MOTOROLA INC
元件分類: 模擬信號調(diào)理
英文描述: Voltage Controlled Oscillator
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO8
封裝: PLASTIC, SOIC-8
文件頁數(shù): 7/11頁
文件大?。?/td> 237K
代理商: MC1648D
MC1648
HIPERCOMM
BR1334 — Rev 4
7
MOTOROLA
Figure 9. Typical Frequency Synthesizer Application
Phase
Detector
MC4044
fref
Counter Control
Logic
MC12014
MC12012
÷
P,
÷
(P+1)
÷
Np
Programmable
Counter MC4016
÷
A
Programmable
Counter MC4016
Low Pass
Filter
Voltage Controlled
Oscillator
MC1648
Modulus Enable Line
Zero Detect Line
fout
N = Np
P + A
Counter Reset Line
fout
fout = Nfref where
N = Np
P + A
Figure 10. Method of Obtaining a Sine–Wave Output
Figure 11. Method of Extending the Useful Range
of the MC1648
(Square Wave Output)
10
12
7
8
3
5
Output
+5.0Vdc
10
12
7
8
3
5
Output
+5.0Vdc
1
14
1
14
1.0k min
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