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TRF3705
www.ti.com
SLWS223A – AUGUST 2011 – REVISED OCTOBER 2011
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 = 2140 MHz
30
OIP2 DISTRIBUTION AT f LO = 2140 MHz
45
40
35
Mean = 28.6 dBm
StDev = 0.4
25
20
Mean = 65.5 dBm
StDev = 0.8
30
25
20
15
10
5
15
10
5
0
27.5
28
28.5
29 29.5
30
30.5
0
62.5 63 63.5 64 64.5 65 65.5 66 66.5 67 67.5 68
OIP3 (dBm)
Figure 55.
G050
OIP2 (dBm)
Figure 56.
G051
UNADJUSTED SIDEBAND SUPPRESSION DISTRIBUTION
P1dB DISTRIBUTION AT f LO = 2140 MHz, f BB = 5.5 MHz
40
Mean = 13.1 dBm
30
AT f LO = 2140 MHz
Mean = ?45.6 dBc
35
StDev = 0.1
25
StDev = 1.4
30
25
20
15
10
5
20
15
10
5
0
12.8
12.9
13
13.1 13.2
13.3
13.4
13.5
0
?52 ?51 ?50 ?49 ?48 ?47 ?46 ?45 ?44 ?43 ?42 ?41
P1dB (dBm)
Figure 57.
G052
Unadjusted Sideband Suppression (dBc)
Figure 58.
G053
UNADJUSTED CARRIER FEEDTHROUGH DISTRIBUTION AT f LO = 2140 MHz
45
40
35
30
25
20
15
10
5
Mean = ?39.3 dBm
StDev = 0.8
0
?43
?42 ?41 ?40 ?39 ?38 ?37
Unadjusted Carrier Feedthrough (dBm)
?36
G054
Figure 59.
Copyright ? 2011, Texas Instruments Incorporated
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