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LMX2531LQ2265E Datasheet(PDF) 6 Page - Texas Instruments

No. de pieza LMX2531LQ2265E
Descripción Electrónicos  LMX2531 High Performance Frequency Synthesizer System with Integrated VCO
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Fabricante Electrónico  TI [Texas Instruments]
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LMX2531LQ2265E Datasheet(HTML) 6 Page - Texas Instruments

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LMX2531
SNAS252R – OCTOBER 2005 – REVISED FEBRUARY 2013
www.ti.com
Recommended Operating Conditions
Parameter
Symbol
Min
Typ
Max
Units
Power Supply Voltage
Vcc
2.8
3.0
3.2
V
(VccDig, VccVCO, VccBUF)
Serial Interface and Power Control
Vi
0
2.75
V
Voltage
Ambient Temperature
TA
-40
+85
°C
(1)
(1)
Maximum Allowable Temperature Drift for Continuous Lock is how far the temperature can drift in either direction from the value it was
at the time that the R0 register was last programmed, and still have the part stay in lock. The action of programming the R0 register,
even to the same value, activates a frequency calibration routine. This implies that the part will work over the entire frequency range, but
if the temperature drifts more than the maximum allowable drift for continuous lock, then it will be necessary to reload the R0 register to
ensure that it stays in lock. Regardless of what temperature the part was initially programmed at, the temperature can never drift outside
the frequency range of -40°C
≤TA≤ 85°C without violating specifications.
Package Thermal Information
The following package information assumes a JEDEC standard board with 9 thermal vias.
Package
θJA
θJC
NJH0036D
35.5 °C/W
9.1 °C/W
NJG0036A
35.5 °C/W
9.1 °C/W
Electrical Characteristics
(VCC = 3.0 V, -40°C ≤ TA ≤ 85 °C; except as specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Current Consumption
LMX2531LQ2265E/
38
44
2570E
Divider Disabled
LMX2531LQ2820E/
38
46
3010E
All Other Options
34
41
Power Supply Current Power
ICC
mA
Supply Current
LMX2531LQ2265E/
41
49
2570E
Divider Enabled
LMX2531LQ2820E/
44
52
3010E
All Other Options
37
46
ICCPD
Power Down Current
CE = 0 V, Part Initialized
7
µA
Oscillator
IIHOSC
Oscillator Input High Current
VIH = 2.75 V
100
µA
IILOSC
Oscillator Input Low Current
VIL = 0
-100
µA
fOSCin
Frequency Range
(1)
5
80
MHz
vOSCin
Oscillator Sensitivity
0.5
2.0
Vpp
PLL
fPD
Phase Detector Frequency
32
MHz
ICP = 0
90
µA
ICP = 1
180
µA
Charge Pump
ICPout
Output Current Magnitude
ICP = 3
360
µA
ICP = 15
1440
µA
ICPoutTRI
CP TRI-STATE Current
0.4 V < VCPout < 2.0 V
2
10
nA
Charge Pump
VCPout = 1.2 V
ICPoutMM
2
8
%
Sink vs. Source Mismatch
TA = 25°C
(1)
There are program bits that need to be set based on the OSCin frequency. Refer to the following sections: XTLSEL[2:0] -- Crystal
Select, XTLDIV[1:0] -- Division Ratio for the Crystal Frequency, XTLMAN[11:0] -- Manual Crystal Mode, XTLMAN2 -- MANUAL
CRYSTAL MODE SECOND ADJUSTMENT, andLOCKMODE -- FREQUENCY CALIBRATION MODE. Not all bit settings can be used
for all frequency choices of OSCin. For instance, automatic modes described in XTLSEL[2:0] -- Crystal Select do not work below 8 MHz.
6
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Copyright © 2005–2013, Texas Instruments Incorporated
Product Folder Links: LMX2531


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