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PDF LMX2311USLDX Data sheet ( Hoja de datos )
| Número de pieza | LMX2311USLDX | |
| Descripción | PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal Communications | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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June 2003
LMX2310U/LMX2311U/LMX2312U/LMX2313U
PLLatinum™ Ultra Low Power Frequency Synthesizer for
RF Personal Communications
LMX2310U 2.5 GHz
LMX2311U 2.0 GHz
LMX2312U 1.2 GHz
LMX2313U 600 MHz
General Description
The LMX2310/1/2/3U are high performance frequency syn-
thesizers. The LMX2310/1/2U use a selectable, dual modu-
lus 32/33 and 16/17 prescaler. The LMX2313U uses a se-
lectable, dual modulus 16/17 and 8/9 prescaler. The device,
when combined with a high quality reference oscillator and a
voltage controlled oscillator, generates very stable, low noise
local oscillator signals for up and down conversion in wire-
less communication devices.
Serial data is transferred into LMX2310/1/2/3U via a three-
wire interface (Data, Enable, Clock) that can be directly
interfaced with low voltage baseband processors. Supply
voltage can range from 2.7V to 5.5V. LMX2310U features
very low current consumption, typically 2.3 mA at 3.0V.
The LMX2310/1/2/3U are manufactured using National’s
0.5µ ABiC V silicon BiCMOS process and is available in
20-pin CSP packages.
Features
n RF operation up to 2.5 GHz
n 2.7V to 5.5V operation
n Ultra Low Current Consumption
n Low prescaler values
LMX2310/1/2U 32/33 or 16/17
LMX2313U 16/17 or 8/9
n Excellent Phase Noise
n Internal balanced, low leakage charge pump
n Selectable Charge Pump Current Levels
n Selectable Fastlock mode with Time-Out Counter
n Low Voltage MICROWIRE interface (1.72V to VCC)
n Digital and Analog Lock Detect
n Small 20-pad Thin Chip Scale Package
Applications
n Cellular DCS, PCS, WCDMA telephone systems
n Wireless Local Area Networks (WLAN)
n Global Positioning Systems (GPS)
n Other wireless communications systems
Functional Block Diagram
PLLatinum™ is a trademark of National Semiconductor Corporation.
© 2003 National Semiconductor Corporation DS200438
20043822
www.national.com
1 page  
Absolute Maximum Ratings (Notes 1,
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Supply Voltage,
(VCC, VP, VµC)
Voltage on any pin with GND=0V
−0.3V to +6.5V
CPo, FL, FIN, OSCIN, OSCOUT (Vi) −0.3V to VCC + 0.3V
Data, Clock, LE, CE, FoLD (Vi) −0.3V to VµC + 0.3V
Storage Temperature Range, (TS)
−65˚C to +150˚C
Lead Temp. (solder 4 sec.), (TL)
+260˚C
Recommended Operating
Conditions (Note 1)
Power Supply Voltage
(VCC)
(VP)
(VµC)
Operating Temperature, (TA)
Min Max Unit
2.7 5.5
VCC 5.5
1.72 VCC
−40 +85
V
V
V
˚C
Electrical Characteristics
VCC = VP = VµC = 3.0V, −40˚C < TA < +85˚C unless specified otherwise.
Symbol
Parameter
Conditions (Note 3)
ICC
LMX2310U
VCC = 5.5V
LMX2311U
Power Supply
lCC Current
VCC = 5.5V
LMX2312U
VCC = 5.5V
ICC-PWDN
LMX2313U
VCC = 5.5V
Power-Down Current
Clock, Data and LE = GND
CE = GND
RF PRESCALER
LMX2310U
Operating
LMX2311U
FIN
Frequency
LMX2312U
LMX2313U
PFIN
Input Sensitivity, RF
Prescaler
PHASE DETECTOR
2.7 ≤ VCC ≤3.0V (Note 4)
3.0V < VCC ≤ 5.5V (Note 4)
Fφ Phase Detector Frequency
REFERENCE OSCILLATOR
FOSC
Operating Frequency,
Reference Oscillator Input
VOSCIN
Input Sensitivity,
(Note 5)
Reference Oscillator Input
IIH
IIL
VOSCOUT
DOSCOUT
VOSCOUT
OSCIN Input Current
OSCIN Input Current
OSCOUT Bias Level
OSCOUT Duty Cycle
OSCOUT Level
VIH = VCC = 5.5V
VIL = 0, VCC = 5.5V
OSCIN Open
OSCIN = 20 MHz, 0.5 VP-P,
OSCIN Duty Cycle = 50%
OSCIN = 20 MHz, 0.5 VP-P ,
OSCOUT Load = 10 pF || 10 k
Ohm
VOH
VOL
IOH
IOL
OSCOUT Output Voltage
OSCOUT Output Voltage
OSCOUT Output Current
OSCOUT Output Current
IOH = -500 µA
IOL = 500 µA
VOH = 2.25 V
VOL = 0.75 V
Min
0.5
0.5
0.2
45
−15
−10
2
0.5
−100
2.6
Typ Max
2.3 3.0
3.4
2.0 2.7
3.2
1.4 2.0
2.4
1.0 1.3
1.6
1 10
2.5
2.0
1.2
600
0
0
10
50
VCC
100
1.5
50
2.6
2.8
0.2 0.4
-1.1
1.1
Units
mA
mA
mA
mA
mA
mA
mA
mA
µA
GHz
GHz
GHz
MHz
dBm
dBm
MHz
MHz
VP−P
µA
µA
V
%
VP-P
V
V
mA
mA
5 www.national.com
5 Page 
Typical Performance Characteristics (Continued)
LMX2310U Fin Sensitivity vs Frequency at 5.5V
LMX2311U Fin Sensitivity vs Frequency at 3.0V
20043847
20043848
11 www.national.com
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet LMX2311USLDX.PDF ] | |
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