- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358887 > LMX2377U (National Semiconductor Corporation) PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications PDF資料下載
參數(shù)資料
| 型號： | LMX2377U |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLLatinum⑩超低功耗雙頻率合成射頻個人通信 |
| 文件頁數(shù)： | 37/44頁 |
| 文件大?。?/td> | 3181K |
| 代理商： | LMX2377U |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當(dāng)前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
2.0 Programming Description
(Continued)
2.4.4 TRI-STATE ID
o
Aux
The TRI-STATE ID
o
Aux bit allows the charge pump to be switched between a normal operating mode and a high impedance
output state. This happens asynchronously with the change in the TRI-STATE ID
o
Aux bit.
Furthermore, the TRI-STATE ID
o
Aux bit operates in conjuction with the PWDN Aux bit to set a synchronous or an asynchronous
powerdown mode.
AUXILIARY SYNTHESIZER CHARGE PUMP TRI-STATE CURRENT
Aux R[19]
Control Bit
Register Location
Description
Function
0
1
TRI-STATE ID
o
Aux
Aux R[19]
Aux Charge Pump
TRI-STATE Current
Aux Charge Pump
Normal Operation
Aux Charge Pump
Output in High
Impedance State
2.5 AUXILIARY N REGISTER
The Aux N register contains the Aux N_CNTRA, Aux N_CNTRB, PRE Aux, and PWDN Aux control words. The Aux N_CNTRA
and Aux N_CNTRB control words are used to setup the programmable feedback divider. 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
Aux
N
PWDN
Aux
PRE
Aux
Aux N_CNTRB[12:0]
Aux N_CNTRA[4:0]
0
1
2.5.1 Aux N_CNTRA[4:0]
The Aux N_CNTRA control word is used to setup the Aux synthesizer’s A counter. The A counter is a 5-bit swallow counter used
in the programmable feedback divider. The Aux N_CNTRA control word can be programmed to values ranging from 0 to 31.
AUXILIARY SYNTHESIZER SWALLOW COUNTER (A COUNTER)
Aux N[2:6]
Divide Ratio
Aux N_CNTRA[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 Aux N_CNTRB[12:0]
Aux N[7:19]
The Aux N_CNTRB control word is used to setup the Aux synthesizer’s B counter. The B counter is a 13-bit programmable binary
counter used in the programmable feedback divider. TheAux N_CNTRB control word can be programmed to values ranging from
3 to 8191.
AUXILIARY SYNTHESIZER PROGRAMMABLE BINARY COUNTER (B COUNTER)
Divide
Ratio
Aux N_CNTRB[12:0]
7
6
0
0
0
0
1
1
12
0
0
1
11
0
0
1
10
0
0
1
9
0
0
1
8
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
8191
L
www.national.com
37
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2471 | 3.6 GHz Delta-Sigma Fractional-N PLL with 1.7 GHz Integer-N PLL |
| LMX2502LQ1635 | PLLatinum⑩ Frequency Synthesizer System with Integrated VCO |
| LMX2502LQX1635 | PLLatinum⑩ Frequency Synthesizer System with Integrated VCO |
| LMX2502 | PLLatinum⑩ Frequency Synthesizer System with Integrated VCO |
| LMX2505LQ1321 | PLLatinu Dual Frequency Synthesizer System with Integrated VCOs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2377U WAF | 制造商:Texas Instruments 功能描述: |
| LMX2377USLBX | 功能描述:IC FREQ SYNTH DUAL 24LAMINATECSP RoHS:否 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:* |
| LMX2377USLEX | 功能描述:IC FREQ SYNTH DUAL 20LAMUCSP RoHS:否 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:* |
| LMX2377UTM | 功能描述:IC FREQ SYNTH DUAL 20TSSOP RoHS:否 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:* |
| LMX2377UTMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。