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参数资料
| 型号： | LMX2354TM/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO24 |
| 封装： | TSSOP-24 |
| 文件页数： | 10/26页 |
| 文件大小： | 453K |
| 代理商： | LMX2354TM/NOPB |
Programming Description (Continued)
5.2.2 N REGISTER — (8/9/12/13) PRESCALER OPERATING IN FRACTIONAL MODE
(RF_N[6]–RF_N[20])
RF_N_CNTR [14:0]
Divide
Ratio
C Word
B Word
A Word
1–23
Divide Ratios Less than 24 are impossible since it is required that C>=3
24–39
Some of these N values are Legal Divide Ratios, some are not
40
00000000101000
0
41
00000000101000
1
...
...........
0
.
16383
11111111111011
1
N REGISTER — (16/17/20/21) PRESCALER OPERATING IN FRACTIONAL MODE
(RF_N[6]–RF_N[20])
RF_N_CNTR [14:0]
Divide
Ratio
C Word
B Word
A Word
1–47
Divide Ratios Less than 48 are impossible since it is required that C>=3
48–79
Some of these N values are Legal Divide Ratios, some are not
80
00000000101000
0
81
00000000101000
1
...
...........
0
.
32767
11111111111111
1
5.2.3 FRACTIONAL MODULUS ACCUMULATOR (FRAC_CNTR)
(RF_N[2]–RF_N[5])
Fractional Ratio (F)
FRAC_CNTR
Modulus 15
Modulus 16
RF_N[5]
RF_N[4]
RF_N[3]
RF_N[2]
0
0000
0
1/15
1/16
0
1
2/15
2/16
0
1
0
14/15
14/16
1
0
N/A
15/16
1
LMX2354
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMX2354TMX/NOPB | 功能描述:IC FREQ SYNTH 2.5GHZ 24-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:PLLatinum™ 标准包装:39 系列:- 类型:* PLL:带旁路 输入:时钟 输出:时钟 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 频率 - 最大:170MHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LMX2355SLB | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2355TM | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2360 WAF | 制造商:Texas Instruments 功能描述: |
| LMX2360TMX | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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