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參數(shù)資料
| 型號： | LMX1601TM/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1100 MHz, PDSO16 |
| 封裝： | LEAD FREE, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 631K |
| 代理商： | LMX1601TM/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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX1601TMX | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LMX1600 2.0 GHz/500 MHz, LMX1601 1.1 GHz/500 MHz, LMX1602 1.1 GHz/1.1 GHz PLLatinuma?￠ Low Cost Dual Frequency Synthesizer |
| LMX1601TMX/NOPB | 功能描述:IC FREQ SYNTHESIZER DUAL 16TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX1602 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Cost Dual Frequency Synthesizer |
| LMX1602SLB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Cost Dual Frequency Synthesizer |
| LMX1602SLBX | 功能描述:IC FREQ SYNTH DL 1.1GHZ 16-LAMIN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
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