- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371007 > MC12206D (MOTOROLA INC) MECL PLL COMPONENTS Serial Input PLL Frequency Synthesizer PDF資料下載
參數(shù)資料
| 型號： | MC12206D |
| 廠商： | MOTOROLA INC |
| 元件分類： | XO, clock |
| 英文描述： | MECL PLL COMPONENTS Serial Input PLL Frequency Synthesizer |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO16 |
| 封裝： | PLASTIC, SO-16 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 145K |
| 代理商： | MC12206D |
MC12206
HIPERCOMM
BR1334 — Rev 4
7
MOTOROLA
For FC = HIGH:
fr lags fp in phase OR fp>fr in frequency
When the phase of fr lags that of fp or the frequency of fp is greater than fr, the
φ
P output will remain in a HIGH state while the
φ
R
output will pulse from LOW to HIGH. The output pulse will reach a minimum 50% duty cycle under a 180
°
out of phase condition.
The signal on
φ
R indicates to the VCO to decrease in frequency to bring the loop into lock.
fr leads fp in phase OR fp<fr in frequency
When the phase of fr leads that of fp or the frequency of fp is less than fr, the
φ
R output will remain in a LOW state while the
φ
P
output pulses from HIGH to LOW. The output pulse will reach a minimum 50% duty cycle under a 180
°
out of phase condition.
The signal on
φ
P indicates to the VCO to increase in frequency to bring the loop to lock.
fr = fp in phase and frequency
When the phase and frequency of fr and fp are equal, the output
φ
P will remain in a HIGH state and
φ
R will remain in a LOW state
except for voltage spikes when signals are in phase. This situation indicates that the loop is in lock and the phase comparator will
maintain the loop in its locked state.
When FC = LOW, the operation of the phase comparator is reversed from the above explanation.
For FC = LOW:
fr lags fp in phase OR fp>fr in frequency
When the phase of fr lags that of fp or the frequency of fp is greater than fr, the
φ
R output will remain in a LOW state while the
φ
P
output will pulse from HIGH to LOW. The output pulse will reach a minimum 50% duty cycle under a 180
°
out of phase condition.
The signal on
φ
P indicates to the VCO to increase in frequency to bring the loop into lock.
fr leads fp in phase OR fp<fr in frequency
When the phase of fr leads that of fp or the frequency of fp is less than fr, the
φ
P output will remain in a HIGH state while the
φ
R
output pulses from LOW to HIGH. The output pulse will reach a minimum 50% duty cycle under a 180
°
out of phase condition.
The signal on
φ
R indicates to the VCO to decrease in frequency to bring the loop to lock.
fr = fp in phase and frequency
When the phase and frequency of fr and fp are equal, the output
φ
P will remain in a HIGH state and
φ
R will remain in a LOW state
except for voltage spikes when signals are in phase. This situation indicates that the loop is in lock and the phase comparator will
maintain the loop in its locked state.
The FC pin controls not only the phase characteristics, but also controls the fOUT test pin. The FC pin permits the user to monitor
either of the phase comparator input signals, fr or fp, at the fOUT output providing a test mode where the programming of the
dividers and the output of the counters can be checked. When FC is HIGH, fOUT = fr, the programmable reference divider output.
When FC is LOW, fOUT = fp, the programmable divider output.
Hence,
If VCO characteristics are like (1), FC should be set HIGH or OPEN.
If VCO characteristics are like (2), FC should be set LOW.
fOUT = fr
fOUT = fp
Figure 4. VCO Characteristics
VCO INPUT VOLTAGE
V
( 1 )
( 2 )
FC = HIGH or OPEN
FC = LOW
Do
φ
R
φ
P
fOUT
Do
φ
R
φ
P
fOUT
fp < fr
H
L
L
fr
L
H
H
fp
fp > fr
L
H
H
fr
H
L
L
fp
fp = fr
NOTES:Z = High impedance
When LE is HIGH or Open, BISW has the same
characteristics as Do.
Z
L
H
fr
Z
L
H
fp
Figure 5. Phase Comparator, Internal Charge Pump, and
fOUT Characteristics
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC12210 | SERIAL INPUT PLL FREQUENCY SYNTHESIZER |
| MC13001X | Monomax Black and White TV Subsystem |
| MC13007X | Monomax Black and White TV Subsystem |
| MC13020P | MOTOROLA C-QUAM AM STEREO DECODER |
| MC13022A | Advanced Medium Voltage AM Stereo Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC12206DT | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MECL PLL COMPONENTS Serial Input PLL Frequency Synthesizer |
| MC1220DIN | 功能描述:電源線濾波器 Filter 250V 20A RoHS:否 制造商:EPCOS 電壓額定值:277 VAC 電流額定值:100 A 安裝風(fēng)格:Chassis 端接類型:Screw |
| MC1220DIN-HFP | 制造商:TDK-Lambda Corporation 功能描述:FILTER250V (AC,,DC,)20A,3.8" X 2.36" X 1.36", HAZMAT - Bulk |
| MC1220F | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC1220-HFP | 制造商:TDK-Lambda Corporation 功能描述:FILTER250V (AC,,DC,)20A,3.8" X 2.36" X 1.36", HAZMAT - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。