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LMX2541SQ2380E Datasheet(PDF) 7 Page - Texas Instruments

No. de pieza LMX2541SQ2380E
Descripción Electrónicos  LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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LMX2541SQ2380E Datasheet(HTML) 7 Page - Texas Instruments

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LMX2541SQ2060E, LMX2541SQ2380E
LMX2541SQ2690E, LMX2541SQ3030E
LMX2541SQ3320E, LMX2541SQ3740E
www.ti.com
SNOSB31I – JULY 2009 – REVISED FEBRUARY 2013
Electrical Characteristics (continued)
(3.15 V
≤ VCC ≤ 3.45 V, -40°C ≤ TA ≤ 85 °C; except as specified. Typical values are at Vcc = 3.3 V, 25 C.)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Charge Pump
0.4 V < VCPout < Vcc - 0.4
ICPoutV
4
%
Current vs. CP Voltage Variation
TA = 25°C
CP Current vs. Temperature
ICPoutT
VCPout = Vcc / 2
8
%
Variation
CPG = 1X
-116
Normalized PLL 1/f Noise
dBc/Hz
LNPLL_flicker(10 kHz)
CPG = 32X
-124.5
LN(f)
(3)
CPG = 1X
-220.8
Normalized PLL Noise Floor
dBc/Hz
LNPLL_flat(1 Hz)
CPG = 32X
-225.4
RFout Buffer Enabled and VCO_DIV > 1
400
4000
fExtVCOin
PLL Input Frequency
MHz
RFout Buffer Disabled and VCO_DIV = 1
400
6000
fExtVCOin ≤ 4 GHz
-15
10
PLL Input Sensitivity
pExtVCOin
dBm
((2) applies to Max Limit Only)
fExtVCOin > 4 GHz
-5
10
VCO Specifications
2060E
1990
2240
2380E
2200
2530
Mode = Full Chip Mode
2690E
2490
2865
fVCO
Internal VCO Frequency Range
This is the frequency before the
MHz
3030E
2810
3230
VCO divider.
3320E
3130
3600
3740E
3480
4000
Maximum Allowable Temperature
ΔTCL
(4),(5)
125
°C
Drift for Continuous Lock
2060E
3.5
2380E
2.8
Maximum Frequency
2690E
1.6
RF Output Power
pRFout
Default Power Mode
dBm
(6)
3030E
1.2
VCO_DIV=1
3320E
0.2
3740E
- 0.3
Fixed Temperature with 100 MHz frequency change
0.3
at the output
ΔPRFout
Change in Output Power
dB
Fixed frequency with a change over the entire
0.4
temperature range
(3)
Consult the Applications Information for more details on these parameters.
(4)
Not tested in production. Guaranteed by characterization. OSCin is tested only to 400 MHz.
(5)
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 device stay in lock. The action of programming the R0 register,
even to the same value, activates a frequency calibration routine. This implies that the device 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 device was initially programmed at, the temperature can never drift
outside the frequency range of -40°C
≤TA≤ 85°C without violating specifications.
(6)
The measurement of the output power is sensitive to the test circuit. All the numbers in the electrical specifications and typical
performance curves were obtained from a characterization setup that accommodate temperature testing and changing of parts. In a
more optimized setup the measured RF output power is typically on the order of 1.5 to 2.4 dB higher.
Copyright © 2009–2013, Texas Instruments Incorporated
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Product Folder Links: LMX2541SQ2060E LMX2541SQ2380E LMX2541SQ2690E LMX2541SQ3030E
LMX2541SQ3320E LMX2541SQ3740E


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