Analog Devices AD9776A Manual page 21

–55
–60
–65
–70
–75
–80
–85
–90
0 25
Figure 48. AD9776A ACLR, f
REF –25.29dBm
*AVG
Log
10dB
PAVG
10
W1 S2
CENTER 143.88MHz
*RES BW 30kHz
RMS RESULTS
FREQ OFFSET
CARRIER POWER 5.000MHz
–12.67dBm/ 10.00MHz
3.84000MHz 15.00MHz
Figure 49. AD9776A, Single Carrier W-CDMA, 4× Interpolation,
f
DATA
Downloaded from Elcodis.com electronic components distributor
1ST ADJ CHAN
3RD ADJ CHAN
2ND ADJ CHAN
50 75 100 125 150 175 200
F (MHz)
OUT
= 122.88 MSPS, 4× Interpolation,
DATA
f /4 Modulation
DAC
*ATTEN 4dB
SPAN 50MHz
VBW 300kHz SWEEP 162.2ms (601 pts)
LOWER UPPER
REF BW dBc dBm dBc dBm
3.884MHz –75.00 –87.67 –75.30 –87.97
3.840MHz –78.05 –90.73 –77.99 –90.66
3.840MHz –77.73 –90.41 –77.50 –90.17
= 122.88 MSPS, Amplitude = −3 dBFS
–150
–154
–158
–162
–166
–170
225 250
Figure 50. AD9776A Noise Spectral Density vs. f
–150
–154
–158
–162
–166
–170
Rev. A | Page 21 of 60
AD9776A/AD9778A/AD9779A
f
= 200MSPS
DAC
f
DAC
f
= 800MSPS
DAC
0 10 20 30 40 50 60
f
(MHz)
OUT
with 500 kHz Spacing, f = 200 MSPS
DATA
f
= 200MSPS
DAC
f
DAC
f
= 800MSPS
DAC
0 10 20 30 40 50 60
f
(MHz)
OUT
Figure 51. AD9776A Noise Spectral Density vs. f
Single Tone Input at −6 dBFS, f
DATA
= 400MSPS
70 80 90 100
, Eight-Tone Input
OUT
= 400MSPS
70 80 90 100
,
OUT
= 200 MSPS