Datasheet

Data Sheet AD9737A/AD9739A
Rev. | Page 31 of 64
AC (MIX-MODE)
f
DAC
= 2.4 GSPS, I
OUTFS
= 20 mA, nominal supplies, T
A
= 25°C, unless otherwise noted.
VBW 10kHz
10dB/DIV
STOP 2.4GHz
SWEEP 28.7s (601pts)
START 20MHz
#RES BW 10kHz
09616-026
Figure 107. Single-Tone Spectrum at f
OUT
= 2.31 GHz, f
DAC
= 2.4 GSPS
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)
09616-027
Figure 108. SFDR in Mix-Mode vs. f
OUT
at 2.4 GSPS
VBW 300kHz
10dB/DIV
SPAN 53.84MHz
SWEEP 174.6ms (601pts)
CENTER 2.10706MHz
#RES VW 30kHz
RMS RESULTS
CARRIER POWER
–21.43dBm/
3.84MHz
FREQ
OFFSET
(MHz)
5
10
15
20
25
REF
BW
(MHz)
3.84
3.84
3.84
3.84
3.84
(dBc)
–68.99
–72.09
–72.86
–74.34
–74.77
(dBm)
–90.43
–93.52
–94.30
–95.77
–96.20
LOWER
(dBc)
–63.94
–71.07
–71.34
–72.60
–73.26
(dBm)
–90.37
–92.50
–92.77
–94.03
–94.70
UPPER
09616-032
Figure 109. Typical Single-Carrier WCDMA ACLR Performance at 2.1 GHz,
f
DAC
= 2457.6 MSPS (Second Nyquist Zone)
VBW 10kHz
10dB/DIV
STOP 2.4GHzSTART 20MHz
STOP 2.4GHz
SWEEP 28.7s (601pts)
START 20MHz
#RES BW 10kHz
09616-030
Figure 110. Single-Tone Spectrum in Mix-Mode at f
OUT
= 1.31 GHz,
f
DAC
= 2.4 GSPS
30
35
40
45
50
55
60
65
70
75
80
85
90
1200 1300 1400
1500 1600 1700 1800 1900 2000 2100 2200 2300 2400
f
OUT
(MHz)
IMD (dBc)
09616-031
Figure 111. IMD in Mix-Mode vs. f
OUT
at 2.4 GSPS
–90
–85
–80
–75
–70
–65
–60
–55
–50
–45
–40
1229 1475 1720 1966 2212 2458 2703 2949 3195 3441 3686
SECOND NYQUIST ZONE THIRD NYQUIST ZONE
FIRST ADJ CH
SECOND ADJ CH
FIFTH ADJ CH
f
OUT
(MHz)
ACLR (dBc)
09616-025
Figure 112. Single-Carrier WCDMA ACLR vs. f
OUT
at 2457.6 MSPS
C