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參數(shù)資料
| 型號： | LMX2330UTM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20 |
| 封裝： | 0.173 INCH, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 10/42頁 |
| 文件大?。?/td> | 3318K |
| 代理商： | LMX2330UTM |
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Electrical Characteristics
(Continued)
V
CC
= V
P
RF = V
P
IF = 3.0V, 40C
≤
T
A
≤
+85C, unless otherwise specified
Symbol
Parameter
Conditions
Value
Typ
Units
Min
Max
PHASE NOISE CHARACTERISTICS
L
N
(f) IF
IF Synthesizer Normalized Phase
Noise Contribution
(Note 10)
L(f) IF
IF Synthesizer Single
Side Band Phase
Noise Measured
TCXO Reference Source
ID
o
IF Bit = 1
-212.0
dBc/
Hz
LMX233xU
f
IN
IF = 200 MHz
f = 1 kHz Offset
F
φ
IF
= 200 kHz
Loop Bandwidth = 18 kHz
N = 1000
F
OSC
= 10 MHz
V
OSC
= 0.632 V
PP
ID
o
IF Bit = 1
PWDN RF Bit = 1
T
A
= +25C
(Note 11)
-99.00
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 LMX233xU f
IN
Sensitivity Test Setup section
Note 6:
Refer to the LMX233xU 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 LMX233xU OSC
in
Sensitivity Test Setup section
Note 9:
Refer to the LMX233xU 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 RF/IF phase detector
comparison frequency.
Note 11:
The synthesizer phase noise is measured with the LMX2330TMEB/LMX2330SLBEB Evaluation boards and the HP8566B Spectrum Analyzer.
L
www.national.com
10
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2330UTMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331 WAF | 制造商:Texas Instruments 功能描述: |
| LMX2331A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331ATM | 制造商:Texas Instruments 功能描述: |
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