Datasheet

DAC908
7
SBAS109B
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
f
CLOCK
(MSPS)
THD (dBc)
–70
–75
–80
–85
–90
–95
–100
25 50 100 125 1500
2HD
4HD
3HD
X
X
X
X
SFDR vs TEMPERATURE AT 100MSPS, 0dBFS
Temperature (°C)
SFDR (dBc)
85
80
75
70
65
60
55
50
45
–20 0 25 7050 85–40
2.1MHz
5.04MHz
20.2MHz
X
X
X
X
X
X
X
SINGLE-TONE OUTPUT SPECTRUM
Frequency (MHz)
Magnitude (dBm)
0
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
510152025
f
CLOCK
= 50MSPS
f
OUT
= 2.1MHz
SFDR = 69dBc
Amplitude = 0dBFS
SINGLE-TONE OUTPUT SPECTRUM
Frequency (MHz)
Magnitude (dBm)
0
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
5 101520253035404550
f
CLOCK
= 100MSPS
f
OUT
= 5.04MHz
SFDR = 67dBc
Amplitude = 0dBFS
SINGLE-TONE OUTPUT SPECTRUM
Frequency (MHz)
Magnitude (dBm)
0
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
12.5 25.0 37.5 50.0 62.5
f
CLOCK
= 125MSPS
f
OUT
= 25.3MHz
SFDR = 57dBc
Amplitude = 0dBFS