AD9739A Analog Devices, AD9739A Datasheet - Page 18

• Manufacturer Part Number: AD9739A
• Description: 14-Bit, 2.5 GSPS, RF D/A Converter
• Manufacturer: Analog Devices

Specifications of AD9739A

• Resolution (bits): 14bit
• Dac Update Rate: 2.5GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): n/a
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

AD9737A/AD9739A
f
DAC
= 2.1 GSPS, I
Figure 33. Single-Tone Spectrum at f
Figure 34. Single-Tone Spectrum at f
START 20MHz
#RES BW 20kHz
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 20kHz
Figure 35. SFDR in Mix-mode vs. f
OUTFS
= 20 mA, nominal supplies, T
VBW 20kHz
VBW 20kHz
f
OUT
(MHz)
OUT
OUT
= 2.31 GHz, f
= 1.31 GHz, f
SWEEP 7.174s (601pts)
SWEEP 7.174s (601pts)
OUT
at 2.4 GSPS
STOP 2.4GHz
STOP 2.4GHz
DAC
DAC
= 2.4 GSPS
= 2.4 GSPS
A
= 25°C, unless otherwise noted.
Rev. | Page 18 of 64
C
Figure 37. Typical Single-Carrier WCDMA ACLR Performance at 2.1 GHz,
Figure 38. Single-Carrier WCDMA ACLR vs. f
–105
–115
100
–35
–45
–55
–65
–75
–85
–95
–50
–55
–60
–65
–70
–75
–80
–85
–90
90
80
70
60
50
40
30
1000
CARRIER POWER –19.526dBm/3.84MHz
OFFSET FREQ
5.000MHz
10.00MHz
15.00MHz
20.00MHz
25.00MHz
CENTER 2.108MHz
#RES BW 30kHz
–71.9dBc
1100
Figure 36. IMD in Mix-Mode vs. f
SECOND NYQUIST ZONE
–72.3dBc
f
DAC
FIRST ADJ CH
1200
= 2457.6 MSPS (Second Nyquist Zone)
THIRD ADJ CH
INTEG BW
3.840MHz
3.840MHz
3.840MHz
3.840MHz
3.840MHz
–71.8dBc –69.9dBc
1300
–69.82
–69.93
–71.77
–72.26
–71.90
dBc
1400 1500 1600 1700 1800 1900 2000
LOWER
–68.8dBc –19.5dBm
f
–88.34
–89.46
–91.29
–91.79
–91.42
f
OUT
VBW 3kHz
dBm
OUT
(MHz)
ACP-IBW
–69.84
–71.15
–71.75
–72.19
–72.70
(MHz)
dBc
UPPER
–69.8dBc
SECOND ADJ CH
–89.36
–90.67
–91.28
–91.71
–92.22
THIRD NYQUIST ZONE
dBm
OUT
–71.1dBc –71.8dBc
OUT
at 2.4 GSPS
FILTER
ON
ON
ON
ON
ON
, f
DAC
SPAN 54.68MHz
Data Sheet
SWEEP 1.509s
= 2457.6 MSPS
–72.2dBc
–72.7dBc