Datasheet

0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0
Source Impedence (Ω)
Noise Figure (dB)
50 ohm act term
100 ohm act term
200 ohm act term
400 ohm act term
No Termination
1.5
2.5
3.5
4.5
50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0
Source Impedence (Ω)
Noise Figure (dB)
Low noise
Low power
Medium power
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0
Source Impedence (Ω)
Noise Figure (dB)
100 ohm act term
200 ohm act term
400 ohm act term
Without Termination
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0
Source Impedence (Ω)
Noise Figure (dB)
50 ohm act term
100 ohm act term
200 ohm act term
400 ohm act term
Without Termination
55.0
60.0
65.0
70.0
75.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
Vcntl (V)
SNR (dBFS)
24 dB PGA gain
30 dB PGA gain
57.0
59.0
61.0
63.0
65.0
67.0
69.0
71.0
73.0
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42
Gain (dB)
SNR (dBFS)
Low noise
Low power mode
AFE5808
SLOS688C –SEPTEMBER 2010–REVISED APRIL 2012 www.ti.com
TYPICAL CHARACTERISTICS (continued)
Figure 30. SNR, LNA = 18dB and Low Power Mode Figure 31. SNR vs. Different Power Modes
Figure 32. Noise Figure, LNA = 12dB and Low Noise Mode Figure 33. Noise Figure, LNA = 18dB and Low Noise Mode
Figure 34. Noise Figure, LNA = 24dB and Low Noise Mode Figure 35. Noise Figure vs. Power Modes with 400Ω
Termination
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