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參數資料
型號: LMX2430SLEX
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: XO, clock
英文描述: PLLatinum Dual High Frequency Synthesizer for RF Personal Communications
中文描述: PLL FREQUENCY SYNTHESIZER, 3000 MHz, PQCC20
封裝: PLASTIC, UTCSP-20
文件頁數: 41/49頁
文件大小: 943K
代理商: LMX2430SLEX
2.0 Programming Description
(Continued)
2.5.1.2 RF_A[4:0] - LMX2434 RF Synthesizer Swallow Counter (A Counter) (R1[7:3])
The LMX2434 A counter is a 5-bit swallow counter used in the programmable feedback divider. The RF_A control word can be
programmed to values ranging from 0 to 31.
Divide Ratio
LMX2434
RF_A[4:0]
2
0
0
1
4
0
0
1
3
0
0
1
1
0
0
1
0
0
1
1
0
1
31
2.5.2 LMX243x RF Synthesizer Programmable Binary Counter
2.5.2.1 RF_B[14:0] - LMX2430/33 RF Synthesizer Programmable Binary Counter (B Counter) (R1[21:7])
The RF_B control word is used to setup the RF synthesizer’s B counter. For both the LMX2430 and LMX2433, the B counter is
a 15-bit programmable binary counter used in the programmable feedback divider. The RF_B control word can be programmed
to values ranging from 3 to 32767. Divide ratios less than 3 are prohibited.
Divide
Ratio
LMX2430/33
RF_B[14:0]
7
0
0
1
14
0
0
1
13
0
0
1
12
0
0
1
11
0
0
1
10
0
0
1
9
0
0
1
8
0
0
1
6
0
0
1
5
0
0
1
4
0
0
1
3
0
0
1
2
0
1
1
1
1
0
1
0
1
0
1
3
4
32767
2.5.2.2 RF_B[13:0] - LMX2434 RF Synthesizer Programmable Binary Counter (B Counter) (R1[21:8])
The LMX2434 B counter is a 14-bit programmable binary counter used in the programmable feedback divider. The RF_B control
word can be programmed to values ranging from 3 to 16383. Divide ratios less than 3 are prohibited.
Divide
Ratio
LMX2434
RF_B[13:0]
7
0
0
1
13
0
0
1
12
0
0
1
11
0
0
1
10
0
0
1
9
0
0
1
8
0
0
1
6
0
0
1
5
0
0
1
4
0
0
1
3
0
0
1
2
0
1
1
1
1
0
1
0
1
0
1
3
4
16383
2.5.3 LMX243x RF Synthesizer Prescaler Select
2.5.3.1 RF_P - LMX2430/33 RF Synthesizer Prescaler Select (R1[22])
Both the LMX2430 and LMX2433 RF synthesizers utilize a selectable dual modulus prescaler. An 8/9 or a 16/17 prescale ratio
can be selected.
Control Bit
Register Location
Description
Function
0
1
RF_P
R1[22]
LMX2430/33
RF Prescaler Select
8/9 Prescaler
Selected
16/17 Prescaler
Selected
2.5.3.2 RF_P - LMX2434 RF Synthesizer Prescaler Select (R1[22])
The LMX2434 RF synthesizer utilizes a selectable dual modulus prescaler. A 16/17 or a 32/33 prescale ratio can be selected.
Control Bit
Register Location
Description
Function
0
1
RF_P
R1[22]
LMX2434
RF Prescaler Select
16/17 Prescaler
Selected
32/33 Prescaler
Selected
L
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相關PDF資料
PDF描述
LMX2430TM PLLatinum Dual High Frequency Synthesizer for RF Personal Communications
LMX2430TMX PLLatinum Dual High Frequency Synthesizer for RF Personal Communications
LMX2433SLEX PLLatinum Dual High Frequency Synthesizer for RF Personal Communications
LMX2434SLEX PLLatinum Dual High Frequency Synthesizer for RF Personal Communications
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相關代理商/技術參數
參數描述
LMX2430SLEX/NOPB 功能描述:鎖相環 - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
LMX2430SLEXNOPB 制造商:National Semiconductor 功能描述:PLL Frequency Synthesizer Dual 100MHz to 3000MHz 20-Pin LAM UCSP T/R
LMX2430TM 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum Dual High Frequency Synthesizer for RF Personal Communications
LMX2430TM/NOPB 功能描述:鎖相環 - PLL 3Ghz High Freq Dual Pll RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
LMX2430TMX 功能描述:鎖相環 - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
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