- 您现在的位置：买卖IC网 > PDF目录44573 > LMX1600TM/NOPB (NATIONAL SEMICONDUCTOR CORP) PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO16 PDF资料下载
参数资料
| 型号： | LMX1600TM/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO16 |
| 封装： | PLASTIC, TSSOP-16 |
| 文件页数： | 3/17页 |
| 文件大小： | 631K |
| 代理商： | LMX1600TM/NOPB |
2.0 Programming Description (Continued)
2.4
CHARGE PUMP CONTROL WORD (CP_WORD)
MSB
LSB
AUX_CP_GAIN
MAIN_CP_GAIN
AUX_PD_POL
MAIN_PD_POL
BIT
LOCATION
FUNCTION
0
1
AUX_CP_GAIN
MAIN_R[17]
Aux Charge Pump Current Gain
LOW
HIGH
MAIN_CP_GAIN
MAIN_R[16]
Main Charge Pump Current Gain
LOW
HIGH
AUX_PD_POL
MAIN_R[15]
Aux Phase Detector Polarity
Negative
Positive
MAIN_PD_POL
MAIN_R[14]
Main Phase Detector Polarity
Negative
Positive
AUX_CP_GAIN (MAIN_R[17]) and MAIN_CP_GAIN (MAIN_R[16]) are used to select charge pump current magnitude either low
gain mode (160 A typ) or high gain mode (1600 A typ)
AUX_ PD_POL (MAIN_R[15]) and MAIN_ PD_POL (MAIN_R[14]) are respectively set to one when Aux or Main VCO
characteristics are positive as in (1) below. When VCO frequency decreases with increasing control voltage (2) PD_POL should
set to zero.
2.4.1
VCO Characteristics
10012914
2.4.2
Phase Comparator and Internal Charge Pump Characteristics
(AUX_PD_POL/MAIN_PD_POL = 1)
10012915
Note 15: fr is phase detector input from reference counter. fp is phase detector input from programmable N counter.
Phase difference detection range: - 2
π to+2pπ.
The minimum width pump up and pump down current pulses occur at the CPo pin when the loop is locked.
2.5
F
OUT/LOCK DETECT PROGRAMMING TRUTH TABLE (FoLD)
FoLD
Fo/LD OUTPUT STATE
32
1
0
AUX_R[17]
AUX_R[16]
AUX_R[15]
AUX_R[14]
0
“0”
0
1
“1”
0
1
X
Main Lock Detect
LMX1600/LMX1601/LMX1602
www.national.com
11
相关PDF资料 |
PDF描述 |
|---|---|
| LMX1601TM/NOPB | PLL FREQUENCY SYNTHESIZER, 1100 MHz, PDSO16 |
| LMX2301MDC | PLL FREQUENCY SYNTHESIZER, 160 MHz, UUC |
| LMX2313USLDX/NOPB | PLL FREQUENCY SYNTHESIZER, 600 MHz, QCC20 |
| LMX2315WG-QML | PLL FREQUENCY SYNTHESIZER, 1200 MHz, CDSO20 |
| LMX2315WG-QMLX | PLL FREQUENCY SYNTHESIZER, 1200 MHz, CDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LMX1600TMX | 功能描述:IC FREQ SYNTHESZR 2.0GHZ 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:* |
| LMX1600TMX/NOPB | 制造商:Texas Instruments 功能描述:PLL Frequency Synthesizer Dual 16-Pin TSSOP T/R |
| LMX1601 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Low Cost Dual Frequency Synthesizer |
| LMX1601SLB | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Low Cost Dual Frequency Synthesizer |
| LMX1601SLBX/NOPB | 功能描述:IC PLLANTINUM SYNTHESZR LAM CSP 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:* |
发布紧急采购，3分钟左右您将得到回复。