- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄97997 > LC72144M (SANYO SEMICONDUCTOR CO LTD) PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24 PDF資料下載
參數(shù)資料
| 型號： | LC72144M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24 |
| 封裝： | MFP-24 |
| 文件頁數(shù)： | 11/22頁 |
| 文件大?。?/td> | 307K |
| 代理商： | LC72144M |
Charge Pump
When unlock is detected following a channel change, PDS (the sub-charge pump) operates. The value of R1 changes to
R1M // R1S (R1S
≈ 100 ), as shown in following figure, decreasing the low-pass filter time-constant and accelerating
PLL locking.
The unlock detection data UL1 must be set to 1. The unlock detection range will be set to ±0.5 s or ±1 s. If a phase
difference in excess of these values is detected the circuit will go to the unlock state and the sub-charge pump will
operate. When the circuit approaches the lock state and the phase difference falls under the unlock detection range, the
sub-charge pump operation will stop, i.e., the sub-charge pump will go to the high impedance state.
No. 5377-19/22
LC72144M
PDC1
PDC0
PDS (sub-charge pump state)
0
!
High impedance
1
0
Charge pump operates (when unlocked)
1
Charge pump operates (normal operation)
DLC
PD1, PD0, PDS
0
Normal operation
1
Forced to low
Pins DO and I/O-5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC72151V | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO30 |
| LC7216M | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20 |
| LCP-10G3A4EDR | FIBER OPTIC TRANSCEIVER, 840-860nm, 10312.5Mbps(Tx), 10312.5Mbps(Rx), SURFACE MOUNT, LC CONNECTOR |
| LCP-10G3A4EDRH | FIBER OPTIC TRANSCEIVER, 840-860nm, 10312.5Mbps(Tx), 10312.5Mbps(Rx), SURFACE MOUNT, LC CONNECTOR |
| LCP-10G3B4QDR | FIBER OPTIC TRANSCEIVER, 1260-1355nm, 10000Mbps(Tx), 10000Mbps(Rx), SURFACE MOUNT, LC CONNECTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC72146 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Electronic Tuning |
| LC72146M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Electronic Tuning |
| LC72146MA-AH | 功能描述:時鐘合成器/抖動清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| LC72146MHSQR-U-TRM-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LC72146V | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。