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TRF3705
SLWS223A – AUGUST 2011 – REVISED OCTOBER 2011
www.ti.com
TYPICAL CHARACTERISTICS: Two-Tone Baseband (continued)
V CC = 3.3 V; T A = +25 ° C; LO = 0 dBm, single-ended drive (LOP); I/Q frequency (f BB ) = 4.5 MHz, 5.5 MHz; baseband I/Q
amplitude = 0.5-V PP /tone differential sine waves in quadrature with V CM = 0.25 V; and broadband output match, unless
otherwise noted.
space
50
OIP3 DISTRIBUTION AT f LO = 900 MHz
45
OIP2 DISTRIBUTION AT f LO = 900 MHz
45
40
35
30
Mean = 31.7 dBm
StDev = 0.2
40
35
30
25
Mean = 71.5 dBm
StDev = 0.5
25
20
15
10
5
20
15
10
5
0
31.2
31.4
31.6
31.8 32
32.2
32.4
0
69
69.5
70
70.5
71 71.5 72
72.5
73
73.5
74
OIP3 (dBm)
Figure 60.
G055
OIP2 (dBm)
Figure 61.
G056
UNADJUSTED SIDEBAND SUPPRESSION DISTRIBUTION
P1dB DISTRIBUTION AT f LO = 900 MHz, f BB = 5.5 MHz
55
50
AT f LO = 900 MHz
50
45
40
35
30
25
20
15
10
5
Mean = 13.2 dBm
StDev = 0.1
45
40
35
30
25
20
15
10
5
Mean = ?43.8 dBc
StDev = 0.9
0
12.9
13
13.1
13.2 13.3
13.4
13.5
13.6
0
?48
?47 ?46 ?45 ?44 ?43 ?42 ?41
?40
P1dB (dBm)
Figure 62.
G057
Unadjusted Sideband Suppression (dBc)
Figure 63.
G058
UNADJUSTED CARRIER FEEDTHROUGH DISTRIBUTION AT f LO = 900 MHz
50
45
40
35
30
25
20
15
10
5
0
Mean = ?48.5 dBm
StDev = 4.9
?85 ?80 ?75 ?70 ?65 ?60 ?55 ?50 ?45 ?40 ?35
Unadjusted Carrier Feedthrough (dBm)
Figure 64.
G059
20
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