AD9779_15 Datasheet, PDF (19/56 Pages) Analog Devices – Dual 12-/14-/16-Bit, 1 GSPS, Digital-to-Analog Converters

–150
–154
–158
–162
–166
f_DAC = 200MSPS
f_DAC = 400MSPS
f_DAC = 800MSPS
–170
0
20
40
60
80
100
f_OUT (MHz)
Figure 30. AD9779 Noise Spectral Density vs. fDAC,
Single-Tone Input at −6 dBFS
–55
–60
–65
–70
0dBFS
–75
–80
–3dBFS
0dBFS – PLL ON
–6dBFS
–85
–90
0
20 40 60 80 100 120 140 160 180 200 220 240 260
f_OUT (MHz)
Figure 31. AD9779 ACLR for First Adjacent Band WCDMA, 4× Interpolation,
fDATA = 122.88 MSPS, On-Chip Modulation Translates Baseband Signal to IF
AD9776/AD9778/AD9779
–55
–60
–65
–70
0dBFS – PLL ON
–75
–6dBFS
–80
–3dBFS
–85
0dBFS
–90
0
20 40 60 80 100 120 140 160 180 200 220 240 260
f_OUT (MHz)
Figure 32. AD9779 ACLR for Second Adjacent Band WCDMA, 4×
Interpolation, fDATA = 122.88 MSPS. On-Chip Modulation Translates
Baseband Signal to IF
–55
–60
–65
–70
0dBFS – PLL ON
–75
–6dBFS
–80
–85
0dBFS
–3dBFS
–90
0
20 40 60 80 100 120 140 160 180 200 220 240 260
f_OUT (MHz)
Figure 33. AD9779 ACLR for Third Adjacent Band WCDMA, 4× Interpolation,
fDATA = 122.88 MSPS, On-Chip Modulation Translates Baseband Signal to IF
Rev. A | Page 19 of 56