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參數(shù)資料
| 型號： | S1M8836 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
| 中文描述： | 分?jǐn)?shù)N射頻/整數(shù)N如果雙鎖相環(huán) |
| 文件頁數(shù)： | 21/29頁 |
| 文件大?。?/td> | 234K |
| 代理商： | S1M8836 |
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FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
S1M8836/37
21
(1)
VCO Characteristics
VCO
Output
Frequency
VCO Input
Voltage
(2)
Program Mode Control
Power down
mode
operation
Control Words
IF_CTL_WORD
Control bits
W1[20]
W1[19]
Acronym
PWDN_IF
PWDN
LOW (0)
power up
asynchronous
power down
power up
HIGH (1)
power down
synchronous power
down
power down
Comments
IF
RF and IF
RF_CTL_WORD
W4[20]
PWDN_RF
RF
Each PLL is individually power controlled by the enable pins (RF_EN and IF_EN pins) or program control bits
(PWDN, PWDN_RF/IF). The enable pins override the program control bits. When both enable pins are HIGH, the
program control bits determine the state of power control. Power down forces all the internal analog blocks to be
deactivated and the charge pump output to be in a TRISTATE. The oscillator buffer is powered down when the
power down bits (W4[20] and W1[20]) become HIGH. The control register and R/N counters, however, remains
active for permitting serial programming and is capable of loading and latching in data during the power down.
There are synchronous and asynchronous power-down modes for S1M8836/37. The power-down bit W1[19] is
used to select between synchronous and asynchronous power-down. Synchronous power-down mode occurs if
W1[19] bit is HIGH and then the power down bit (W4[20] or W1[20]) becomes HIGH. In the synchronous power
down mode, the power-down function will go into power-down mode upon the completion of a charge pump pulse
event because it is synchronized with the charge pump and thus can diminish undesired frequency jumps.
Asynchronous power down mode occurs if W1[19] bit is LOW and then the power down bit (W4[20] or W1[20])
becomes HIGH. Activation of the asynchronous function will go into power-down mode immediately.
RF Power down mode table
W4[20]
0
0
1
1
W1[19]
0
1
1
1
Power down mode status
RF PLL active
RF PLL active, only charge pump to TRISTATE
Asynchronous power down
Synchronous power down
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| S1M8836X01-G0T0 | FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
| S1M8837 | FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S1M8836X01-G0T0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
| S1M8837 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
| S1M8837X01-G0T0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
| S1MA | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Standard Surface Mount Glass Passivated Rectifier |
| S1MA-E3/5AT | 功能描述:整流器 1.0 Amp 1000 Volt 30A IFSM @ 8.3ms RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel |
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