Datasheet

AD9776/AD9778/AD9779
Rev. A | Page 20 of 56
SPAN 50MHz
SWEEP 162.2ms (601 pts)VBW 300kHz
CENTER 143.88MHz
*RES BW 30kHz
RMS RESULTS
CARRIER POWER
–12.49dBm/
3.84000MHz
FREQ OFFSET
5.000MHz
10.00MHz
15.00MHz
REF BW
3.840MHz
3.840MHz
3.840MHz
dBc
–76.75
–80.94
–79.95
dBm
–89.23
–93.43
–92.44
LOWER
dBc
–77.42
–80.47
–78.96
dBm
–89.91
–92.96
–91.45
UPPER
REF –25.28dBm
*AVG
Log
10dB/
PAVG
10
W1 S2
*ATTEN 4dB
EXT REF
05361-031
Figure 34. AD9779 WCDMA Signal, 4× Interpolation,
f
DATA
=122.88 MSPS, f
DAC
/4 Modulation
SPAN 50MHz
SWEEP 162.2ms (601 pts)VBW 300kHz
CENTER 151.38MHz
*RES BW 30kHz
1 –17.87dBm
2 –20.65dBm
3 –18.26dBm
4 –18.23dBm
TOTAL CARRIER POWER –12.61dBm/15.3600MHz
REF CARRIER POWER –17.87dBm/3.84000MHz
FREQ OFFSET
5.000MHz
10.00MHz
15.00MHz
INTEG BW
3.840MHz
3.840MHz
3.840MHz
dBc
–67.70
–70.00
–71.65
dBm
–85.57
–97.87
–99.52
LOWER
dBc
–67.70
–69.32
–71.00
dBm
–85.57
–87.19
–88.88
UPPER
REF –30.28dBm
*AVG
Log
10dB/
PAVG
10
W1 S2
*ATTEN 4dB
EXT REF
05361-032
Figure 35. AD9779 Multicarrier WCDMA Signal, 4× Interpolation,
f
DAC
=122.88 MSPS, f
DAC
/4 Modulation
1.5
0
CODE
INL (14-BIT LSB)
10k
1.0
0.5
0
–0.5
–1.0
–1.5
2k 4k 6k 8k
05361-033
Figure 36. AD9778 Typical INL
0.6
0
CODE
DNL (14-BIT LSB)
–0.2
–1.0
16k14k12k10k8k6k4k2k
0.4
0.2
0
–0.4
–0.6
–0.8
05361-034
Figure 37. AD9778 Typical DNL