Analog Devices AD9776A Manual page 23

–55
–60
–65
FIRST ADJACENT CHANNEL
–70
THIRD ADJACENT
CHANNEL
–75
–80
–85
–90
0 25 50 75 100 125
F
OUT
Figure 48. AD9776A ACLR vs. f
f = 122.88 MSPS, 4× Interpolation, f
DATA
REF –25.29dBm *ATTEN 4dB
*AVG
log
10dB
PAVG
10
W1 S2
CENTER 143.88MHz
*RES BW 30kHz VBW 300kHz
RMS RESULTS
FREQ OFFSET REF BW
CARRIER POWER 5.000MHz 3.884MHz
–12.67dBm/ 10.00MHz 3.840MHz
3.84000MHz 15.00MHz 3.840MHz
Figure 49. AD9776A Single Carrier W-CDMA,
4× Interpolation, f = 122.88 MSPS, Amplitude = −3 dBFS
DATA
SECOND ADJACENT
CHANNEL
150 175 200 225 250
(MHz)
,
OUT
/4 Modulation
DAC
SPAN 50MHz
SWEEP 162.2ms (601 pts)
LOWER UPPER
dBc dBm dBc dBm
–75.00 –87.67 –75.30 –87.97
–78.05 –90.73 –77.99 –90.66
–77.73 –90.41 –77.50 –90.17
Rev. B | Page 23 of 56
AD9776A/AD9778A/AD9779A
–150
f
= 200MSPS
DAC
–154
–158
f
= 800MSPS
DAC
–162
–166
–170
0 10 20 30 40 50
f
(MHz)
OUT
Figure 50. AD9776A Noise Spectral Density vs. f
Eight-Tone Input with 500 kHz Spacing, f
–150
f
= 200MSPS
DAC
–154
–158
f
= 800MSPS
DAC
–162
–166
–170
0 10 20 30 40 50
f
(MHz)
OUT
Figure 51. AD9776A Noise Spectral Density vs. f
Single-Tone Input at −6 dBFS, f
f
= 400MSPS
DAC
60 70 80 90 100
,
OUT
= 200 MSPS
DATA
f
= 400MSPS
DAC
60 70 80 90 100
,
OUT
= 200 MSPS
DATA