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參數(shù)資料
| 型號： | LMX2531 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PLLatinum High Performance Frequency Synthesizer System with Integrated VCO |
| 中文描述： | PLLatinum高性能頻率合成器系統(tǒng)的集成VCO |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 589K |
| 代理商： | LMX2531 |
Electrical Characteristics
(V
CC
= 3.0 V, -40C
≤
T
A
≤
85 C; except as specified.) (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Digital Interface (DATA, CLK, LE, CE, Ftest/LD, FLout)
High-Level Input Voltage
Low-Level Input Voltage
High-Level Input Current
Low-Level Input Current
High-Level Output Voltage
Low-Level Output Voltage
MICROWIRE Timing
Data to Clock Set Up Time
Data to Clock Hold Time
Clock Pulse Width High
Clock Pulse Width Low
Clock to Enable Set Up Time
Enable to Clock Set Up Time
Enable Pulse Width High
V
IH
V
IL
I
IH
I
IL
V
OH
V
OL
1.6
2.75
0.4
3.0
3.0
V
V
μA
μA
V
V
V
IH
= 1.75
V
IL
= 0 V
I
OH
= 500 μA
I
OL
= -500 μA
-3.0
-3.0
2.0
0.4
t
CS
t
CH
t
CWH
t
CWL
t
ES
t
CES
t
EWH
See Data Input Timing
See Data Input Timing
See Data Input Timing
See Data Input Timing
See Data Input Timing
See Data Input Timing
See Data Input Timing
25
20
25
25
25
25
25
ns
ns
ns
ns
ns
ns
ns
Note 2:
Normalized Phase Noise Contribution is defined as: LN(f) = L(f) – 20log(N) – 10log(Fcomp) where L(f) is defined as the single side band phase noise
measured at an offset frequency, f, in a 1 Hz Bandwidth and Fcomp is the comparison frequency of the synthesizer. The offset frequency, f, must be chosen
sufficiently smaller then the PLL’s loop band-width, and large enough to avoid a substantial noise contribution from the reference.
Note 3:
Continuous Lock Temperature Range is how far the temperature can drift in either direction from it’s original value at the time of the part being programmed,
before the PLL has to be reprogrammed. The action of programming the R0 register activates a calibration routine. However, if this register is not reprogrammed,
the temperature drift spec applies. Note that regardless of what temperature the part was initially programmed at, the temperature can never drift outside the
frequency range of -40C
≤
T
A
≤
85C without violating specifications.
Note 4:
The VCO phase noise is measured assuming that the loop bandwidth is sufficiently narrow that the VCO noise dominates. The maximum limits apply only
at center frequecy and over temperature, assuming that the part is reloaded at each test frequency. Over frequency, the phase noise can vary 1-2 dB, with the worst
case performance typically occurring at the highest frequency. Over temperature, the phase noise typically varies 1-2 dB, assuming the part is reloaded.
Serial Data Timing Diagram
20101103
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 |
|---|---|
| LMX2531_07 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Performance Frequency Synthesizer System with Integrated VCO |
| LMX25311146EVAL | 功能描述:時鐘和定時器開發(fā)工具 LMX2531LQ1146 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| LMX25311146EVAL/NOPB | 功能描述:射頻開發(fā)工具 LMX25311146 EVAL MOD RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| LMX25311226EVAL | 功能描述:時鐘和定時器開發(fā)工具 LMX2531LQ1226 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| LMX25311226EVAL/NOPB | 功能描述:射頻開發(fā)工具 LMX25311226 EVAL MOD RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
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