DAC5686 Datasheet, PDF (15/46 Pages) Texas Instruments – 16-BIT, 500-MSPS, 2X16X INTERPOLATING DUAL-CHANNEL DIGITAL-TO-ANALOG CONVERTER

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TYPICAL CHARACTERISTICS (continued)
DAC5686
SLWS147B – APRIL 2003 – REVISED AUGUST 2004
WCDMA TEST MODEL 1: FOUR CARRIER
WCDMA TEST MODEL 1: DUAL CARRIER
−10
f_data = 122.88 MSPS
−20 ^fIN ^{= –30.72 MHz Complex}
ACLR = 63.29 dB
−30 ^{4y Interpolation}
Quad Mode
−40
−50
−60
−70
−80
−90
−100
−110
72 77 82 87 92 97 102 107 112
f – Frequency – MHz
Figure 15.
−10
f_data = 122.88 MSPS
f_IN = 30.72 MHz Complex
ACLR = 58.58 dB
−30 ^{4y Interpolation}
Quad Mode
−50
−70
−90
−110
138 143 148 153 158 163 168
f – Frequency – MHz
Figure 16.
VCO GAIN
vs
VCO FREQUENCY
600
Boost for 0%
500
400
300
Boost for 45%
200
100
0
0
Boost for 30%
Boost for 15%
100 200 300 400 500 600 700
f_VCO – VCO Frequency – MHz
Figure 17.
15