Datasheet
1750
FREQUENCY (MHz)
-2
1
5
POWER (dBm)
2250 3750
3
0
2750 3250
T
A
= 85
o
C
4250
4
2
-1
T
A
= -40
o
C
T
A
= 25
o
C
1750
FREQUENCY (MHz)
-10
-2
6
POWER
(dBm)
2250 3750
2
-6
2750 3250
VCOGAIN=3
VCOGAIN=9
VCOGAIN=6
4250
VCOGAIN=12
VCOGAIN=15
1750
FREQUENCY (MHz)
-2
1
5
POWER (dBm)
2250 3750
3
0
2750 3250
Vcc = 3.15V
4250
Vcc = 3.3V
Vcc = 3.45V
4
2
-1
1750
FREQUENCY (MHz)
-10
-2
6
POWER
(dBm)
2250 3750
2
-6
2750 3250
OUTTERM=3
OUTTERM=9
OUTTERM=6
4250
OUTTERM=12
OUTTERM=15
LMX2541SQ2060E, LMX2541SQ2380E
LMX2541SQ2690E, LMX2541SQ3030E
LMX2541SQ3320E, LMX2541SQ3740E
SNOSB31I –JULY 2009–REVISED FEBRUARY 2013
www.ti.com
The following plots show the trends in output power as a function of temperature, voltage, and frequency. For
states where VCOGAIN and OUTTERM are not 12, the table below shows how the output power is modified
based on these programmable settings.
Output Power
vs. Output Power
Voltage vs.
(VCO_DIV = 1, VCOGAIN = 12, OUTTERM = 12, OUTTERM and FREQUENCY
T
A
= 25°C
(2)
) (VCO_DIV = 1, T
A
= 25 °C, Vcc = 3.3 V, VCOGAIN = 12
(2)
)
Figure 13. Figure 14.
Output Power
vs. Output Power
Temperature vs.
(VCO_DIV = 1, VCOGAIN = 12, OUTTERM = 12, VCOGAIN and FREQUENCY
Vcc = 3.3 V
(2)
) (VCO_DIV = 1, T
A
= 25 °C, Vcc = 3.3 V, OUTTERM = 12
(2)
)
Figure 15. Figure 16.
(2) 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.
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Product Folder Links: LMX2541SQ2060E LMX2541SQ2380E LMX2541SQ2690E LMX2541SQ3030E
LMX2541SQ3320E LMX2541SQ3740E