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PDF LMX2331 Data sheet ( Hoja de datos )
| Número de pieza | LMX2331 | |
| Descripción | PLLatinum Low Power Dual Frequency Synthesizer for RF Personal Communications | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMX2331 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
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June 1999
LMX2330L/LMX2331L/LMX2332L
PLLatinum™ Low Power Dual Frequency Synthesizer for
RF Personal Communications
LMX2330L 2.5 GHz/510 MHz
LMX2331L 2.0 GHz/510 MHz
LMX2332L 1.2 GHz/510 MHz
General Description
The LMX233XL family of monolithic, integrated dual fre-
quency synthesizers, including prescalers, is to be used as a
local oscillator for RF and first IF of a dual conversion trans-
ceiver. It is fabricated using National’s 0.5µ ABiC V silicon
BiCMOS process.
The LMX233XL contains dual modulus prescalers. A 64/65
or a 128/129 prescaler (32/33 or 64/65 in the 2.5 GHz
LMX2330L) can be selected for the RF synthesizer and a 8/9
or a 16/17 prescaler can be selected for the IF synthesizer.
LMX233XL, which employs a digital phase locked loop tech-
nique, combined with a high quality reference oscillator, pro-
vides the tuning voltages for voltage controlled oscillators to
generate very stable, low noise signals for RF and IF local
oscillators. Serial data is transferred into the LMX233XL via
a three wire interface (Data, Enable, Clock). Supply voltage
can range from 2.7V to 5.5V. The LMX233XL family features
very low current consumption;
LMX2330L — 5.0 mA at 3V, LMX2331L — 4.0 mA at 3V,
LMX2332L — 3.0 mA at 3V.
The LMX233XL are available in a TSSOP 20-pin and CSP
24-pin surface mount plastic package.
Features
n Ultra low current consumption
n 2.7V to 5.5V operation
n Selectable synchronous or asynchronous powerdown
mode:
ICC = 1 µA typical at 3V
n Dual modulus prescaler:
LMX2330L
(RF) 32/33 or 64/65
LMX2331L/32L
(RF) 64/65 or 128/129
LMX2330L/31L/32L (IF) 8/9 or 16/17
n Selectable charge pump TRI-STATE® mode
n Selectable charge pump current levels
n Selectable Fastlock™ mode
n Upgrade and compatible to LMX233XA family
Applications
n Portable Wireless Communications
(PCS/PCN, cordless)
n Cordless and cellular telephone systems
n Wireless Local Area Networks (WLANs)
n Cable TV tuners (CATV)
n Other wireless communication systems
Functional Block Diagram
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
Fastlock™, MICROWIRE™ and PLLatinum™ are trademarks of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS012806
DS012806-1
www.national.com
1 page  
Absolute Maximum Ratings (Notes 1,
2)
Recommended Operating
Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Supply Voltage
VCC
VP
Voltage on Any Pin
with GND = 0V (VI)
Storage Temperature Range (TS)
Lead Temperature (solder 4 sec.) (TL)
−0.3V to +6.5V
−0.3V to +6.5V
−0.3V to VCC+0.3V
−65˚C to +150˚C
+260˚C
Power Supply Voltage
VCC 2.7V to 5.5V
VP VCC to +5.5V
Operating Temperature (TA)
−40˚C to +85˚C
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to
the device may occur. Recommended Operating Conditions indicate condi-
tions for which the device is intended to be functional, but do not guarantee
specific performance limits. For guaranteed specifications and test condi-
tions, see the Electrical Characteristics. The guaranteed specifications apply
only for the test conditions listed.
Note 2: This device is a high performance RF integrated circuit with an ESD
rating <2 keV and is ESD sensitive. Handling and assembly of this device
should only be done at ESD protected work stations.
Electrical Characteristics
VCC = 3.0V, VP = 3.0V; −40˚C < TA < 85˚C, except as specified
Symbol
Parameter
Conditions
ICC Power
Supply
LMX2330L RF + IF
LMX2330L RF Only
VCC = 2.7V to 5.5V
Value
Min Typ
Max
Units
5.0 6.6
4.0 5.2
Current
LMX2331L RF + IF
4.0 5.4
LMX2331L RF Only
3.0 4.0
mA
LMX2332L IF + RF
3.0 4.1
LMX2332L RF Only
2.0 2.7
LMX233xL IF Only
1.0 1.4
ICC-PWDN Powerdown Current
fIN RF Operating
Frequency
LMX2330L
LMX2331L
(Note 3)
1 10 µA
0.5 2.5
0.2 2.0 GHz
LMX2332L
0.1 1.2
fIN IF
Operating
Frequency
LMX233xL
45 510 MHz
fOSC
fφ
PfIN RF
Oscillator Frequency
Maximum Phase Detector
Frequency
RF Input Sensitivity
PfIN IF
VOSC
VIH
VIL
IIH
IF Input Sensitivity
Oscillator Sensitivity
High-Level Input Voltage
Low-Level Input Voltage
High-Level Input Current
IIL Low-Level Input Current
IIH
IIL
VOH
VOL
tCS
tCH
tCWH
tCWL
Oscillator Input Current
Oscillator Input Current
High-Level Output Voltage
(for FoLD, pin number 10)
Low-Level Output Voltage (for
FoLD, pin number 10)
Data to Clock Set Up Time
Data to Clock Hold Time
Clock Pulse Width High
Clock Pulse Width Low
5
10
VCC = 3.0V
VCC = 5.0V
VCC = 2.7V to 5.5V
OSCin
(Note 4)
(Note 4)
VIH = VCC = 5.5V
(Note 4)
VIL = 0V, VCC = 5.5V
(Note 4)
VIH = VCC = 5.5V
VIL = 0V, VCC = 5.5V
IOH = −500 µA
−15
−10
−10
0.5
0.8 VCC
−1.0
−1.0
−100
VCC − 0.4
IOL = 500 µA
See Data Input Timing
See Data Input Timing
See Data Input Timing
See Data Input Timing
50
10
50
50
40 MHz
MHz
0
0
0
0.2 VCC
1.0
dBm
dBm
dBm
VPP
V
V
µA
1.0 µA
100 µA
µA
V
0.4 V
ns
ns
ns
ns
5 www.national.com
5 Page 
Typical Performance Characteristics (Continued)
LMX2332L RF Sensitivity vs Frequency
IF Input Sensitivity vs Frequency
DS012806-31
Oscillator Input Sensitivity vs Frequency
DS012806-32
DS012806-33
11 www.national.com
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet LMX2331.PDF ] | |
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