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參數(shù)資料
型號(hào): MC14046B
廠商: ON SEMICONDUCTOR
英文描述: Phase Locked Loop
中文描述: 鎖相環(huán)
文件頁(yè)數(shù): 5/7頁(yè)
文件大小: 181K
代理商: MC14046B
MOTOROLA CMOS LOGIC DATA
5
MC14046B
Typical Low–Pass Filters
NOTE: Sometimes R3 is split into two series resistors each R3
÷
2. A capacitor CC is then placed from the midpoint to ground. The value for
CC should be such that the corner frequency of this network does not significantly affect
ω
n. In Figure B, the ratio of R3 to R4 sets the
damping, R4
(0.1)(R3) for optimum results.
Figure 3. General Phase–Locked Loop Connections and Waveforms
Waveforms
Note: for further information, see:
(1) F. Gardner, “Phase–Lock Techniques”, John Wiley and Son, New York, 1966.
(2) G. S. Moschytz, “Miniature RC Filters Using Phase–Locked Loop”, BSTJ, May, 1965.
(3) Garth Nash, “Phase–Lock Loop Design Fundamentals”, AN–535, Motorola Inc.
(4) A. B. Przedpelski, “Phase–Locked Loop Design Articles”, AR254, reprinted by Motorola Inc.
PCAin
@ FREQUENCY f
PCBin
14
3
PHASE
COMPARATOR
EXTERNAL
LOW–PASS
FILTER
VCO
2 OR 13
PC1out
OR
PC2out
VCOin
9
9
10
4
EXTERNAL
÷
N
COUNTER
R1
R2
11
12
6
7
CIA
CIB
CI
SFout
RSF
VCOout
@ FREQUENCY Nf
= f
(a)
INPUT
R3
OUTPUT
C2
2fC
1
2
R3 C2
fL
(a)
INPUT
R3
OUTPUT
R4
C2
Typically:
R4C2
6N
fmax
N
2
f
(R3
3,000 ) C2
100N f
fmax2
– R4C2
f = fmax – fmin
Definitions:
N = Total division ratio in feedback loop
K
φ
= VDD/
π
for Phase Comparator 1
K
φ
= VDD/4
π
for Phase Comparator 2
2
fVCO
VDD– 2 V
for a typical design
ω
n
KVCO
2
fr
10
0.707
(at phase detector input)
ζ
LOW–PASS FILTER
Filter A
Filter B
n
K KVCO
NR3C2
N n
2K KVCO
F(s)
1
R3C2S
1
n
K KVCO
NC2(R3
R4)
0.5
n(R3C2
K N
F(s)
R3C2S
1
S(R3C2
R4C2)
1
PCAin
PCBin
PC1out
VCOin
VDD
VSS
VOH
VOL
VOH
VOL
VOH
VOL
PCAin
PCBin
PC2out
VCOin
LD
VDD
VSS
VOH
VOL
VOH
VOL
VOH
VOL
VOL
VOH
Phase Comparator 1
Phase Comparator 2
SOURCE
FOLLOWER
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC14046B_05 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Phase Locked Loop
MC14046BCL 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Phase Locked Loop
MC14046BCP 功能描述:鎖相環(huán) - PLL LOG CMOS PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
MC14046BCPG 功能描述:鎖相環(huán) - PLL 3-18V RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
MC14046BDW 功能描述:鎖相環(huán) - PLL LOG CMOS PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
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