TYPICAL CHARACTERISTICS (Cont.)
TA = 25°C, +VD = +3.3V, +VA = +5V, differential transformer coupled, IOUT = 20mA, 50ý double terminated load, SFDR up to Nyquist, unless otherwise noted.
IVA vs IOUTFS
SINGLE-TONE SFDR
60
55
50
45
40
35
30
25
20
15
10
10
0
fCLOCK = 52MSPS
OUT = 5.23MHz
Amplitude = 0dBFS
f
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
5
10
15
20
25
0
4
8
12
16
20
I
OUTFS (mA)
Frequency (MHz)
SINGLE-TONE SFDR
DUAL-TONE SFDR
10
0
10
0
fCLOCK = 100MSPS
OUT = 20.2MHz
Amplitude = 0dBFS
fCLOCK = 78MSPS
f
f
OUT1 = 9.44MHz
OUT2 = 10.44MHz
Amplitude = 0dBFS
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
f
31.2
0
10
20
30
40
50
0
7.8
15.6
23.4
39.0
Frequency (MHz)
Frequency (MHz)
FOUR-TONE SFDR
10
0
fCLOCK = 50MSPS
f
f
f
f
OUT1 = 6.25MHz
OUT2 = 6.75MHz
OUT3 = 7.25MHz
OUT4 = 7.75MHz
–10
–20
–30
–40
–50
–60
–70
–80
–90
Amplitude = 0dBFS
15
10
Frequency (MHz)
0
5
20
25
DAC2902
SBAS167A
8
BB [ BURR-BROWN CORPORATION ]
