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LMX2364 Datasheet(Fiches technique) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce LMX2364
Description  2.6 GHz PLLatinum Fractional RF Frequency Synthesizer with 850 MHz Integer IF Frequency Synthesizer
Télécharger  39 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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 6 page
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Electrical Characteristics (V
Vcc =VVcp = 3.0V; −40˚C
≤ T
A
≤ +85˚C except as specified) (Continued)
Symbol
Parameter
Conditions
Value
Units
Min
Typ
Max
OSCILLATOR PARAMETERS
f
OSC
Oscillator Operating
Frequency
2
110
MHz
v
OSC
Oscillator Sensitivity
OSCinRF, OSCinIF
0.5
V
Vcc
V
I
OSC
Oscillator Input Current
V
OSC =VVcc
100
µA
V
OSC = 0V
−100
µA
DIGITAL INTERFACE (DATA, CLK, LE, ENIF, ENRF, Ftest/LD, FLoutRF, FLoutIF)
V
IH
High-Level Input Voltage
2.7
≤ V
Vcc
≤ 3.2
1.6
V
3.2< V
Vcc
≤ 5.5
2
V
V
IL
Low-Level Input Voltage
0.4
V
I
IH
High-Level Input Current
V
IH =VCC
−1.0
1.0
µA
I
IL
Low-Level Input Current
V
IL = 0
−1.0
1.0
µA
V
OH
High-Level Output Voltage
I
OH = −500 µA
V
CC −0.4
V
V
OL
Low-Level Output Voltage
I
OL = 500 µA
0.4
V
MICROWIRE INTERFACE TIMING
T
CS
Data to Clock Set Up Time
See Data Input Timing
50
ns
T
CH
Data to Clock Hold Time
See Data Input Timing
10
ns
T
CWH
Clock Pulse Width High
See Data Input Timing
50
ns
T
CWL
Clock Pulse Width Low
See Data Input Timing
50
ns
T
ES
Clock to Load Enable Set
Up Time
See Data Input Timing
50
ns
T
EW
Load Enable Pulse Width
See Data Input Timing
50
ns
PHASE NOISE
L
F1Hz(f) RF
RF Synthesizer’s
Normalized Phase Noise
Contribution, Fractional
Mode (Note 4)
RF_OM = 1 (Fractional Mode)
f=3KHz
TCXO Reference Source
RF_CP=1(4mA)
V
ENIF = LOW
−208
dBc/Hz
RF Synthesizer’s
Normalized Phase Noise
Contribution, Integer Mode
(Note 4)
RF_OM = 0 (Integer Mode)
f=3KHz
TCXO Reference Source
RF_CP=2(4mA)
V
ENIF = LOW
−215
dBc/Hz
L
F1Hz(f) IF
IF Synthesizer’s
Normalized Phase Noise
Contribution (Note 4)
f=3KHz
TCXO Reference Source
IF_CP = 1 (800 mA)
V
ENRF = LOW
−212
dBc/Hz
Note 3: Some reference divider ratios between the minimum and maximum are not realizable. See the section on R divider programming for more details.
Note 4: Normalized Phase Noise Contribution is defined as: LF1Hz(f) = L(f) – 20·log(N) – 10log(fCOMP) where L(f) is defined as the single side band phase noise
measured at an offset frequency, f, ina1Hz 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.
www.national.com
6




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