TYPICAL CHARACTERISTICS: V
D
= V
A
= +5V
(Cont.)
At T
A
= +25°C, differential transformer coupled output, 50Ω doubly terminated, and SFDR up to Nyquist, unless otherwise noted.
THD vs f
CLOCK
AT f
OUT
= 2.1MHz
–70
–75
2HD
–80
SFDR vs TEMPERATURE AT 100MSPS, 0dBFS
85
80
75
2.1MHz
SFDR (dBc)
THD (dBc)
70
65
60
X
X
X
X
3HD
–85
X
X
5.04MHz
X
X
X
–90
–95
–100
0
25
X
X
20.2MHz
55
4HD
50
45
–40
50
100
f
CLOCK
(MSPS)
125
150
–20
0
25
50
Temperature (°C)
70
85
SINGLE-TONE OUTPUT SPECTRUM
10
0
–10
f
CLOCK
= 50MSPS
f
OUT
= 2.1MHz
SFDR = 69dBc
Amplitude = 0dBFS
10
0
–10
SINGLE-TONE OUTPUT SPECTRUM
Magnitude (dBm)
–30
–40
–50
–60
–70
–80
–90
0
5
10
Magnitude (dBm)
–20
–20
–30
–40
–50
–60
–70
–80
–90
f
CLOCK
= 100MSPS
f
OUT
= 5.04MHz
SFDR = 67dBc
Amplitude = 0dBFS
15
20
25
0
5
10
15
20
25
30
35
40
45
50
Frequency (MHz)
Frequency (MHz)
SINGLE-TONE OUTPUT SPECTRUM
10
0
–10
Magnitude (dBm)
–20
–30
–40
–50
–60
–70
–80
–90
0
12.5
25.0
f
CLOCK
= 125MSPS
f
OUT
= 25.3MHz
SFDR = 57dBc
Amplitude = 0dBFS
37.5
50.0
62.5
Frequency (MHz)
DAC908
SBAS109B
7
TI [ TEXAS INSTRUMENTS ]
