參數(shù)資料
型號: MC14046B
廠商: ON SEMICONDUCTOR
英文描述: Phase Locked Loop
中文描述: 鎖相環(huán)
文件頁數(shù): 4/7頁
文件大?。?/td> 181K
代理商: MC14046B
MOTOROLA CMOS LOGIC DATA
MC14046B
4
Figure 1. Phase Comparators State Diagrams
PHASE COMPARATOR 1
Input Stage
PCAin
X X
PCBin
00
01
11
10
PC1out
0
1
PHASE COMPARATOR 2
Input Stage
PCAin
X X
PCBin
PC2out
0
1
3–State
Output Disconnected
LD
(Lock Detect)
0
0
1
Refer to Waveforms in Figure 3.
00
01
10
11
00
10
01
11
00
01
10
11
Figure 2. Design Information
Locks on harmonics of center frequency.
Yes
frequency (f0).
No
frequency (fmin).
and 180
°
at ends of lock range (2fL)
initially in lock; 2fL = full VCO frequency range = fmax – fmin.
The frequency range of the input signal on which the loop will stay locked if it was
out of lock.
(see Figure 3). fC
fL
components is typically less than
±
20%.
a design guide. Since calculated component
factor of 4, laboratory experimentation may
be required for fixed designs. Part to part
1 M
10K
1
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