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參數(shù)資料
| 型號(hào)： | HCF4046M013TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | MICROPOWER PHASE-LOCKED LOOP |
| 中文描述： | 微功耗鎖相環(huán) |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大小： | 686K |
| 代理商： | HCF4046M013TR |
HCF4046B
3/12
p-type output driver is maintained ON for a time
corresponding
to
the
Subsequently, the capacitor voltage of the
low-pass filter connected to this phase comparator
is adjusted until the signal and comparator inputs
are equal in both phase and frequency. At this
stable point both p- and n-type output drivers
remain OFF and thus the phase comparator
output becomes an open circuit and holds the
voltage on the capacitor of the low-pass filter
constant. Moreover the signal at the "phase
pulses" output is a high level which can be used
for indicating a locked condition. Thus, for phase
comparator II, no phase difference exists between
phase
difference.
signal and comparator input over the full VCO
frequency range. Moreover, the power dissipation
due to the low-pass filter is reduced when this type
of phase comparator is used because both the p-
and n-type output drivers are OFF for most of the
signal input cycle. It should be noted that the PLL
lock range for this type of phase comparator is
equal to the capture range, independent of the
low-pass filter. With no signal present at the signal
input, the VCO is adjusted to its lowest frequency
for phase comparator II. Fig.3 shows typical
waveforms for a CMOS PLL employing phase
comparator II in a locked condition.
Figure 1 :
Phase-Comparator I Characteristics at Low-Pass Filter Output.
Figure 2 :
Typical Waveforms for CMOS Phase Locked-Loop Employing Phase Comparator I in Locked
Condition of f
o
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| HCF4047BM1 | LOW-POWELOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR |
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| HCF4047BEY | LOW-POWELOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| HCF4047 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR |
| HCF4047B | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-POWELOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR |
| HCF4047BC1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-POWELOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR |
| HCF4047BEY | 功能描述:單穩(wěn)態(tài)多諧振蕩器 Mono/Astable Mutlivi RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時(shí)間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| HCF4047BF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Monostable Multivibrator |
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