Datasheet

AD9737A/AD9739A Data Sheet
Rev. | Page 18 of 64
f
DAC
= 2.1 GSPS, I
OUTFS
= 20 mA, nominal supplies, T
A
= 25°C, unless otherwise noted.
09616-132
10dB/DIV
STOP 2.4GHz
SWEEP 7.174s (601pts)
START 20MHz
#RES BW 20kHz
VBW 20kHz
Figure 33. Single-Tone Spectrum at f
OUT
= 2.31 GHz, f
DAC
= 2.4 GSPS
09616-133
10dB/DIV
STOP 2.4GHz
SWEEP 7.174s (601pts)
START 20MHz
#RES BW 20kHz
VBW 20kHz
Figure 34. Single-Tone Spectrum at f
OUT
= 1.31 GHz, f
DAC
= 2.4 GSPS
09616-134
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400
f
OUT
(MHz)
SFDR (dBc)
Figure 35. SFDR in Mix-mode vs. f
OUT
at 2.4 GSPS
09616-135
30
40
50
60
70
90
80
100
1000 130012001100 1400 1500 1600 1700 1800 1900 2000
IMD (dBc)
f
OUT
(MHz)
Figure 36. IMD in Mix-Mode vs. f
OUT
at 2.4 GSPS
09616-136
SPAN 54.68MHz
SWEEP 1.509s
CENTER 2.108MHz
#RES BW 30kHz
UPPER
FILTER
ON
ON
ON
ON
ON
dBc
–69.84
–71.15
–71.75
–72.19
–72.70
dBc
–69.82
–69.93
–71.77
–72.26
–71.90
dBm
–89.36
–90.67
–91.28
–91.71
–92.22
LOWER
dBm
–88.34
–89.46
–91.29
–91.79
–91.42
INTEG BW
3.840MHz
3.840MHz
3.840MHz
3.840MHz
3.840MHz
OFFSET FREQ
5.000MHz
10.00MHz
15.00MHz
20.00MHz
25.00MHz
CARRIER POWER –19.526dBm/3.84MHz ACP-IBW
10dB/DIV
–35
–45
–55
–65
–75
–85
–95
–105
–115
VBW 3kHz
–72.7dBc
–71.8dBc –69.9dBc –68.8dBc
–19.5dBm
–72.3dBc–71.9dBc –69.8dBc –71.1dBc –71.8dBc –72.2dBc
Figure 37. Typical Single-Carrier WCDMA ACLR Performance at 2.1 GHz,
f
DAC
= 2457.6 MSPS (Second Nyquist Zone)
–90
–85
–80
–75
–70
–65
–60
–55
–50
1307.6 3557.6 1557.6 1807.6 2057.6 2307.6 2557.6 2807.6 3057.6 3307.6
SECOND NYQUIST ZONE THIRD NYQUIST ZONE
FIRST ADJ CH
THIRD ADJ CH
ACLR (dBc)
09616-137
f
OUT
(MHz)
SECOND ADJ CH
Figure 38. Single-Carrier WCDMA ACLR vs. f
OUT
, f
DAC
= 2457.6 MSPS
C