參數(shù)資料
型號： LMX2377USLBX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： XO, clock
英文描述： PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
中文描述： PLL FREQUENCY SYNTHESIZER, 2500 MHz, PQCC24
封裝： PLASTIC, CSP-24
文件頁數(shù)： 11/44頁
文件大小： 3181K
代理商： LMX2377USLBX
Electrical Characteristics
(Continued)
V
CC
= V
P
Main = V
P
Aux = Vμc = 3.0V, 40C
≤
T
A
≤
+85C, unless otherwise specified
Symbol
Parameter
Conditions
Value
Typ
Units
Min
Max
PHASE NOISE CHARACTERISTICS
L
N
(f) Main
Main Synthesizer Normalized Phase
Noise Contribution
(Note 10)
L(f) Main
Main Synthesizer Single Side Band
Phase Noise Measured
TCXO Reference Source
ID
o
Main Bit = 1
-212.0
dBc/
Hz
f
IN
Main = 2450 MHz
f = 1 kHz Offset
F
φ
Main
= 200 kHz
Loop Bandwidth = 7.5 kHz
N = 12250
F
OSC
= 10 MHz
V
OSC
= 0.632 V
PP
ID
o
Main Bit = 1
PWDN Aux Bit = 1
T
A
= 25C
(Note 11)
TCXO Reference Source
ID
o
Aux Bit = 1
-77.24
dBc/
Hz
L
N
(f) Aux
Aux Synthesizer Normalized Phase
Noise Contribution
(Note 10)
Aux Synthesizer Single Side Band
Phase Noise Measured
-212.0
dBc/
Hz
L(f) Aux
f
IN
Aux = 900 MHz
f = 1 kHz Offset
F
φ
Aux
= 200 kHz
Loop Bandwidth = 12 kHz
N = 4500
F
OSC
= 10 MHz
V
OSC
= 0.632 V
PP
ID
o
Aux Bit = 1
PWDN Main Bit = 1
T
A
= 25C
(Note 11)
-85.94
dBc/
Hz
Note 4:
Some of the values in this range are illegal divide ratios (B
<
A). To obtain continuous legal division, the Minimum Divide Ratio must be calculated. Use N
≥
P
*
(P1), where P is the value of the prescaler selected.
Note 5:
Refer to the LMX2377U f
IN
Sensitivity Test Setup section
Note 6:
Refer to the LMX2377U Charge Pump Test Setup section
Note 7:
Refer to the Charge Pump Current Specification Definitions for details on how these measurements are made.
Note 8:
Refer to the LMX2377U OSC
in
Sensitivity Test Setup section
Note 9:
Refer to the LMX2377U Serial Data Input Timing section
Note 10:
Normalized Phase Noise Contribution is defined as : L
N
(f) = L(f) 20 log (N) 10 log (F
φ
), where L(f) is defined as the single side band phase noise
measured at an offset frequency, f, in a 1 Hz bandwidth. The offset frequency, f, must be chosen sufficiently smaller than the PLL’s loop bandwidth, yet large enough
to avoid substantial phase noise contribution from the reference source. N is the value selected for the feedback divider and F
φ
is the Main/Aux phase detector
comparison frequency..
Note 11:
The synthesizer phase noise is measured with the LMX2370TMEB/LMX2370SLBEB/LMX2370SLEEB Evaluation boards and the HP8566B Spectrum
Analyzer.
L
www.national.com
11
相關(guān)PDF資料
PDF描述
LMX2377USLEX POSITIONER
LMX2377U PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
LMX2471 3.6 GHz Delta-Sigma Fractional-N PLL with 1.7 GHz Integer-N PLL
LMX2502LQ1635 PLLatinum⑩ Frequency Synthesizer System with Integrated VCO
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
LMX2410QM 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF/Baseband Circuit
LMX2411 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Baseband Processor for Radio Communications
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