Datasheet

Start 30 MHz
Stop 5 GHz
Marker 1:
1 GHz
Marker 4:
4 GHz
Marker 3:
3 GHz
Marker 2:
2 GHz
2
4
3
1
2
1
VCO_DIV
= 1
VCO_DIV > 1
LMX2541SQ2060E, LMX2541SQ2380E
LMX2541SQ2690E, LMX2541SQ3030E
LMX2541SQ3320E, LMX2541SQ3740E
SNOSB31I –JULY 2009–REVISED FEBRUARY 2013 www.ti.com
Table 3. Change in Output Power in Divided Mode as a Function of DIVGAIN and OUTTERM
(1)
(continued)
3 -10.2 -6.1 -5.7 -5.5 -5.5
6 -9.8 -4.4 -2.4 -2.1 -2.0
OUTTERM 9 -9.8 -4.3 -1.5 -0.7 -0.5
12 -9.9 -4.3 -1.4 +0.0 +0.2
15 -9.9 -4.4 -1.4 +0.3 +0.7
The impedance of the RFout pin varies as a function of frequency, VCO_DIV, OUTTERM, VCOGAIN, DIVGAIN, and
frequency. When in bypass mode (VCO_DIV = 1), the DIVGAIN word has no impact on the output impedance. When
in divided mode (VCO_DIV>1), the VCOGAIN has no impact on the output impedance. This graphic shows how the
input impedance varies as a function of frequency for both the bypass and divided cases.
Figure 21. RFout Output Impedance
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Product Folder Links: LMX2541SQ2060E LMX2541SQ2380E LMX2541SQ2690E LMX2541SQ3030E
LMX2541SQ3320E LMX2541SQ3740E