Analog Devices AD9776 Instruction Manual page 20

AD9776/AD9778/AD9779
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
0 512 1024 1536
Figure 41. AD9776 Typical INL
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
0 512 1024 1536
Figure 42. AD9776 Typical DNL
100
95
90
85
80
75
4 × 100MSPS
70
65
60
4 × 150MSPS
55
50
0 40 80 120 160
Figure 43. AD9776 IMD, 4× Interpolation
2048 2560 3072 3584 4096
CODE
2048 2560 3072 3584 4096
CODE
4 × 200MSPS
200 240 280 320 360 400
f
(MHz)
OUT
100
90
80
70
60
50
0
Figure 44. AD9776 In-Band SFDR, 2× Interpolation
–55
–60
–65
–70
–75
–80
–85
–90
0 25
Figure 45. AD9776, Single Carrier WCDMA, 4× Interpolation,
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 46. AD9776 ACLR, f
Rev. 0 | Page 20 of 56
f
= 160MSPS
DATA
f
= 250MSPS
DATA
f
= 200MSPS
DATA
20 40 60
f
(MHz)
OUT
1ST ADJ CHAN
3RD ADJ CHAN
2ND ADJ CHAN
50 75 100 125 150 175
f
(MHz)
OUT
f = 122.88 MSPS, Amplitude = –3 dBFS
DATA
*ATTEN 4dB
VBW 300kHz SWEEP 162.2ms (601 pts)
LOWER
REF BW dBc dBm dBc
3.884MHz –75.00 –87.67 –75.30
3.840MHz –78.05 –90.73 –77.99
3.840MHz –77.73 –90.41 –77.50
= 122.88 MSPS, 4× Interpolation,
DATA
f /4 Modulation
DAC
80 100
200 225 250
SPAN 50MHz
UPPER
dBm
–87.97
–90.66
–90.17