AD9739 Analog Devices, AD9739 Datasheet - Page 15

• Manufacturer Part Number: AD9739
• Description: 14-Bit, 2500 MSPS, RF Digital-to-Analog Converter
• Manufacturer: Analog Devices

Specifications of AD9739

• Resolution (bits): 14bit
• Dac Update Rate: 2.5GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

Data Sheet
AC (MIX MODE)
f
DAC
Figure 27. Typical Single-Carrier WCDMA ACLR Performance at 2.1 GHz,
= 2.4 GSPS, I
Figure 25. Single-Tone Spectrum at f
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400
START 20MHz
#RES BW 10kHz
CENTER 2.10706MHz
#RES VW 30kHz
RMS RESULTS
CARRIER POWER
–21.43dBm/
3.84MHz
Figure 26. SFDR in Mix Mode vs. f
f
DAC
OUTFS
= 2457.6 MSPS (Second Nyquist Zone)
FREQ
OFFSET
(MHz)
5
10
15
20
25
= 20 mA, nominal supplies, 25°C, unless otherwise noted.
(MHz)
REF
3.84
3.84
3.84
3.84
3.84
BW
VBW 300kHz
VBW 10kHz
f
OUT
–68.99
–72.09
–72.86
–74.34
–74.77
(dBc)
(MHz)
LOWER
OUT
–90.43
–93.52
–94.30
–95.77
–96.20
(dBm)
SWEEP 174.6ms (601pts)
= 2.31 GHz, f
SWEEP 28.7s (601pts)
OUT
–63.94
–71.07
–71.34
–72.60
–73.26
(dBc)
at 2.4 GSPS
UPPER
SPAN 53.84MHz
–90.37
–92.50
–92.77
–94.03
–94.70
(dBm)
STOP 2.4GHz
DAC
= 2.4 GSPS
Rev. B | Page 15 of 48
Figure 28. Single-Tone Spectrum in Mix Mode at f
–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90
Figure 30. Single-Carrier WCDMA ACLR vs. f
90
85
80
75
70
65
60
55
50
45
40
35
30
1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400
1229 1475 1720 1966 2212 2458 2703 2949 3195 3441 3686
START 20MHz
START 20MHz
#RES BW 10kHz
SECOND NYQUIST ZONE
Figure 29. IMD in Mix Mode vs. f
FIRST ADJ CH
FIFTH ADJ CH
f
DAC
VBW 10kHz
f
f
= 2.4 GSPS
OUT
OUT
(MHz)
(MHz)
THIRD NYQUIST ZONE
OUT
SWEEP 28.7s (601pts)
SECOND ADJ CH
at 2.4 GSPS
OUT
at 2457.6 MSPS
STOP 2.4GHz
STOP 2.4GHz
OUT
= 1.31 GHz,
AD9739