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参数资料
| 型号： | LMX2335UTM |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | XO, clock |
| 英文描述： | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO16 |
| 封装： | PLASTIC, TSSOP-16 |
| 文件页数： | 40/48页 |
| 文件大小： | 3127K |
| 代理商： | LMX2335UTM |
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2.0 Programming Description
(Continued)
2.5.4 PWDN RF2
The PWDN RF2 bit is used to switch the RF2 PLL between a powered up and powered down mode.
Furthermore, the PWDN RF2 bit operates in conjuction with the TRI-STATE ID
o
RF2 bit to set a synchronous or an asynchronous
powerdown mode.
RF2 SYNTHESIZER POWERDOWN
RF2 N[21]
Control Bit
Register Location
Description
Function
0
1
PWDN RF2
RF2 N[21]
RF2 Powerdown
RF2 PLL Active
RF2 PLL Powerdown
2.6 RF1 R REGISTER
The RF1 R register contains the RF1 R_CNTR, PD_POL RF1, ID
RF1, and TRI-STATE ID
RF1 control words, in addition to two
bits that compose the F
LD control word. The detailed description and programming information for each control word is
discussed in the following sections.
Reg. Most Significant Bit
21
20
SHIFT REGISTER BIT LOCATION
13
12
11
10
Least Significant Bit
3
2
19
18
17
16
15
14
9
8
7
6
5
4
1
0
Data Field
Address
Field
RF1
R
F
o
LD1 F
o
LD3
TRI-
STATE
ID
o
RF1
ID
o
RF1
PD_
POL
RF1
RF1 R_CNTR[14:0]
1
0
2.6.1 RF1 R_CNTR[14:0]
The RF1 reference divider (RF1 R_CNTR) can be programmed to support divide ratios from 3 to 32767. Divide ratios less than
3 are prohibited.
RF1 SYNTHESIZER PROGRAMMABLE REFERENCE DIVIDER (R COUNTER)
RF1 R[2:16]
Divide Ratio
RF1 R_CNTR[14:0]
8
7
0
0
0
0
1
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
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
2.6.2 PD_POL RF1
The PD_POL RF1 bit is used to control the RF1 synthesizer’s phase detector polarity based on the VCO tuning characteristics.
RF1 SYNTHESIZER PHASE DETECTOR POLARITY
RF1 R[17]
Control Bit
Register Location
Description
Function
0
1
PD_POL RF1
RF1 R[17]
RF1 Phase Detector
Polarity
RF1 VCO Negative
Tuning
Characteristics
RF1 VCO Positive
Tuning
Characteristics
RF1 VCO Characteristics
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相关PDF资料 |
PDF描述 |
|---|---|
| LMX2335U | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336 | PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336LSLB | PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336LTM | PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336TM | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LMX2335UTM/NOPB | 功能描述:IC FREQ SYNTHESIZER DUAL 16TSSOP 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:* |
| LMX2335UTMX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336 WAF | 制造商:Texas Instruments 功能描述: |
| LMX2336L | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
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