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参数资料
| 型号： | LC72151V |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO30 |
| 封装： | SSOP-30 |
| 文件页数： | 14/29页 |
| 文件大小： | 326K |
| 代理商： | LC72151V |
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Charge Pump Structure
Note: If the unlock state is detected when the channel changes, the sub-charge pump (PDS) operates. Since the sub-
charge pump operates concurrently with the main-charge pump, decrease the time constants for the low-pass filter
to accelerate the locking.
However, note that when the FMIN (high-speed mode) is selected and when the channel changes (during high-
speed locking control), both the main- and the sub-charge pumps do not operate and enter the high impedance
state, and forcibly implement an unlock judgement. When locked at a high-speed locking control completion, the
output is not extended but locking is instantaneously judged. By selecting sub-charge operation (during unlocked)
with FMIN (high-speed mode) selected, the sub-charge pump is forcibly operated to shorten the locking time for
the time set by the high-speed locking completion flag output wait time control data (HSE0, HSE1) after switching
from high-speed locking control to normal PLL operation.
No. 6976-21/29
LC72151V
PDM1
(MAIN)
PDM2
fvco/N
Phase
Detector
Unlock
Detector
and
Subcharge
Pump Cont
fref
Clock
Unlock
DZ0
UL0
UL1
PDC0
PDC1
DO
DLC
DZ1
(SUB)
PDS
PD
New high-speed
locking charge pump
Main-charge pump
Conventional high-speed
locking sub-charge pump
F
(High Speed)
Fast Lock Up
Control
TLR0,TLR1
CWS0,CWS1
HSE0,HSE1
PDC1
PDC0
PDS(Sub-charge pump state)
0
*
High impedance
1
Charge pump operating (at all times)
1
0
Charge pump operating (when PLL unlocked)
DLC
PDM1, PDM2, PDS
0
Normal operation
1
Forced low
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LC72151VS-MPB-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack |
| LC72151VS-TRM-E | 功能描述:时钟合成器/抖动清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| LC7215F | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:MW/LW PLL Frequency Synthesizers |
| LC7215FM | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:MW/LW PLL Frequency Synthesizers |
| LC7216M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Electronic Tuning |
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