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LMX2486 Datasheet(PDF) 4 Page - Texas Instruments

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Part # LMX2486
Description  1.0 GHz - 4.5 GHz High Performance Delta-Sigma Low Power Dual PLLatinum??Frequency Synthesizers with 3.0 GHz Integer PLL
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

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LMX2486
SNAS324 – JANUARY 2006
www.ti.com
Electrical Characteristics (continued)
(VCC = 3.0V; -40°C ≤ TA ≤ +85°C unless otherwise specified)
Value
Symbol
Parameter
Conditions
Units
Min
Typ
Max
RF SYNTHESIZER PARAMETERS
RF_P = 16
1000
4000
Operating
fFinRF
LMX2486
MHz
Frequency
RF_P = 32
1000
4500
pFinRF
Input Sensitivity
-15
0
dBm
Phase Detector
fCOMP
Frequency
50
MHz
(1)
RF_CPG = 0
95
µA
VCPoutRF = VCC/2
RF_CPG = 1
RF Charge Pump
190
µA
VCPoutRF = VCC/2
ICPoutRFSRCE
Source Current
(2)
...
...
µA
RF_CPG = 15
1520
µA
VCPoutRF = VCC/2
RF_CPG = 0
-95
µA
VCPoutRF = VCC/2
RF_CPG = 1
RF Charge Pump Sink
-190
µA
VCPoutRF = VCC/2
ICPoutRFSINK
Current
(2)
...
...
µA
RF_CPG = 15
-1520
µA
VCPoutRF = VCC/2
RF Charge Pump TRI-
ICPoutRFTRI
STATE Current
0.5
≤ VCPoutRF ≤ VCC -0.5
2
10
nA
Magnitude
Magnitude of RF CP
RF_CPG > 2
3
10
%
VCPoutRF = VCC/2
| ICPoutRF%MIS |
Sink vs. CP Source
TA = 25°C
RF_CPG
≤ 2
3
13
%
Mismatch
Magnitude of RF CP
0.5
≤ VCPoutRF ≤ VCC -0.5
| ICPoutRF%V |
2
8
%
Current vs. CP Voltage
TA = 25°C
Magnitude of RF CP
| ICPoutRF%T |
VCPoutRF = VCC/2
4
%
Current vs. Temperature
IF SYNTHESIZER PARAMETERS
IF_P = 8
250
2000
fFinIF
Operating Frequency
MHz
IF_P = 16
250
3000
pFinIF
IF Input Sensitivity
-10
+5
dBm
Phase Detector
fCOMP
10
MHz
Frequency
IF Charge Pump Source
ICPoutIFSRCE
VCPoutIF = VCC/2
3.5
mA
Current
IF Charge Pump Sink
ICPoutIFSINK
VCPoutIF = VCC/2
-3.5
mA
Current
IF Charge Pump TRI-
ICPoutIFTRI
STATE Current
0.5
≤ VCPoutIF ≤ VCC RF -0.5
2
10
nA
Magnitude
Magnitude of IF CP Sink
VCPoutIF = VCC/2
| ICPoutIF%MIS |
1
8
%
vs. CP Source Mismatch
TA = 25°C
Magnitude of IF CP
0.5
≤ VCPoutIF ≤ VCC -0.5
| ICPoutIF%V |
4
10
%
Current vs. CP Voltage
TA = 25°C
Magnitude of IF CP
| ICPoutIF%TEMP|
VCPoutIF = VCC/2
4
%
Current vs. Temperature
(1)
For Phase Detector Frequencies above 20 MHz, Cycle Slip Reduction (CSR) may be required. Legal divide ratios are also required.
(2)
Refer to table in Section RF_CPG -- RF PLL Charge Pump Gain for complete listing of charge pump currents.
4
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Copyright © 2006, Texas Instruments Incorporated
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