參數(shù)資料
型號: S1M8836X01-G0T0
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 1000 MHz, CQCC24
封裝: 3.50 X 4.50 MM, QFN-24
文件頁數(shù): 13/29頁
文件大?。?/td> 234K
代理商: S1M8836X01-G0T0
S1M8836/37
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
20
Programmable PFD and Charge Pump
IF Charge Pump Gain ( IF_CP_WORD; W2[18] )
Control Words
Control bits
Acronym
LOW (0)
HIGH (1)
Comments
IF_CP_WORD
W2[18]
IF_CP_GAIN
1x (100
A)
8x (800
A) IF charge pump
RF Charge Pump Gain ( RF_CP_WORD; W3[17:14] )
Control Words
Control bits
Acronym
LOW (0)
HIGH (1)
Comments
RF_CP_WORD
W3[17:14]
RF_CP_LVL
select 16-level charge pump current
RF charge pump
Icpo (
A)
8X
4X
2X
1X
W3[17]
W3[16]
W3[15]
W3[14]
50
0
100
0
1
200
0
1
250
0
1
0
400
0
1
450
1
0
800
1
Phase Detector Polarity ( RF_CP_WORD/IF_CP_WORD; W3[13]/W2[17] )
Depending on VCO characteristics, W2[17] and W3[13] bits should be set as follows :
Control bits
LOW (0)
HIGH (1)
Comments
W2[17]
Negative Slope
Positive Slope
IF PFD
W3[13]
Negative Slope
Positive Slope
RF PFD
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