Datasheet

LMX2541SQ2060E, LMX2541SQ2380E
LMX2541SQ2690E, LMX2541SQ3030E
LMX2541SQ3320E, LMX2541SQ3740E
www.ti.com SNOSB31I –JULY 2009–REVISED FEBRUARY 2013
Table 4. RFout Output Impedance vs. VCOGAIN (Bypass Mode)
(1)
VCOGAIN=3 VCOGAIN=6 VCOGAIN=9 VCOGAIN=12 VCOGAIN=15
Freq.
(MHz)
Real Imaginary Real Imaginary Real Imaginary Real Imaginary Real Imaginary
50 3.8 2.1 5.5 1.9 7.3 1.8 9.5 1.7 10.1 1.7
100 4.8 4.1 6.1 3.9 7.8 3.7 9.8 3.6 10.3 3.6
200 5.4 5.7 6.8 6.0 8.7 6.3 10.9 6.5 11.4 6.6
400 5.5 9.4 7.5 10.0 9.8 10.6 12.4 11.0 13.1 11.0
600 5.8 15.1 8.1 15.4 10.7 15.7 13.7 15.7 14.5 15.6
800 7.0 20.7 9.6 20.8 12.6 20.8 15.8 20.3 16.7 20.1
1000 9.2 26.3 12.1 26.1 15.4 25.6 19.0 24.6 19.8 24.1
1200 10.7 28.6 13.4 27.9 16.3 26.9 19.3 25.5 20.0 25.0
1400 12.2 30.9 14.7 29.7 17.1 28.2 19.7 26.4 20.2 25.9
1600 13.7 33.2 15.9 31.5 18.0 29.5 20.1 27.4 20.5 26.8
1800 15.2 35.5 17.2 33.3 18.8 30.8 20.5 28.3 20.7 27.7
2000 14.5 39.5 16.4 37.4 17.9 35.0 19.6 32.5 19.8 31.9
2200 15.6 42.9 17.4 40.7 18.7 38.2 20.3 35.6 20.4 35.0
2400 14.2 47.6 16.0 45.3 17.4 42.8 19.0 40.1 19.2 39.4
2600 12.2 51.3 14.1 48.7 15.6 46.5 17.2 43.5 17.3 42.5
2800 11.5 57.9 13.7 55.3 15.3 52.4 17.0 49.0 17.1 48.3
3000 10.6 67.1 13.1 64.0 14.8 60.5 16.3 56.5 16.4 55.7
3200 13.1 77.3 15.7 73.2 17.3 69.0 18.4 64.2 18.4 63.3
3400 17.6 88.1 20.0 82.8 21.1 77.4 21.7 71.8 21.5 70.8
3600 29.0 96.0 30.6 90.2 30.9 83.6 30.2 76.7 29.8 75.6
3800 38.2 99.4 38.0 94.4 36.4 87.3 34.1 80.5 33.4 79.4
4000 43.5 106.0 41.6 99.0 38.9 92.0 35.5 85.1 34.8 83.7
4200 48.0 119.3 45.9 109.8 43.1 101.9 37.2 94.2 36.0 93.0
4400 62.4 137.9 56.4 126.6 49.8 117.6 42.3 109.5 40.8 108.3
4600 87.0 149.4 76.0 138.1 65.4 129.5 54.3 122.2 52.3 121.2
4800 128.1 153.7 109.7 145.6 93.0 140.1 76.7 135.9 74.0 135.5
5000 168.1 134.7 145.4 135.5 124.9 138.0 105.4 141.1 102.4 141.9
(1) This is for the VCO divider in bypass mode (VCO_DIV=1) and the RFout pin powered up. OUTTERM was set to 12.
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LMX2541SQ3320E LMX2541SQ3740E