DAC8571
www.ti.com
SLAS373A–DECEMBER 2002–REVISED JULY 2003
TYPICAL CHARACTERISTICS (continued)
At TA = +25°C, unless otherwise noted.
HALF-SCALE SETTLING TIME (Large Signal)
FULL-SCALE SETTLING TIME (Large Signal)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.5
2.0
V
= V
REF
= 2.7 V
Output
V
= V
REF
= 5 V
Output
DD
DD
1.5
1.0
0.5
0.0
Loaded With
2 kΩ and
200 pF to
GND
Loaded With
2 kΩ and
200 pF to
GND
t – Time – 12µs/div, Fast–Settling Mode
t – Time – 12µs/div, Fast–Settling Mode
Figure 19.
Figure 20.
HALF-SCALE SETTLING TIME
SIGNAL-TO-NOISE RATIO vs OUTPUT FREQUENCY
98
96
94
92
90
88
86
84
1.50
1.00
0.50
0.00
VDD = 5V
V
= V
REF
= 2.7 V
Output
DD
VDD = 2.7V
Loaded With
2 kΩ and
200 pF to
GND
VDD = VREF
-1dB FSR Digital Input, FS = 52ksps
Measurement Bandwidth = 20kHz
t – Time – 12µs/div, Fast–Settling Mode
0
500
1k 1.5k 2k 2.5k 3k 3.5k 4k
4.5k
Output Frequency (Hz), Fast-Settling Mode
Figure 21.
Figure 22.
TOTAL HARMONIC DISTORTION vs OUTPUT FREQUENCY
TOTAL HARMONIC DISTORTION vs OUTPUT FREQUENCY
0
0
VDD = VREF = 2.7V
-10
VDD = VREF = 5V
- 10
FS = 52ksps, -1dB FSR Digital Input
F
S = 52ksps, - 1dB FSR Digital Input
-20
- 20
- 30
- 40
- 50
- 60
- 70
- 80
- 90
- 100
Measurement Bandwidth = 20kHz
Measurement Bandwidth = 20kHz
-30
-40
THD
-50
THD
-60
-70
-80
-90
3rd Harmonic
2nd Harmonic
500 1k 1.5k
3rd Harmonic
2.5k 3k
2nd Harmonic
-100
0
2k
3.5k
4k
0
500
1k
1.5k
2k
2.5k
3k
3.5k
4k
Output Frequency (Hz), Fast-Settling Mode
Output Frequency (Hz), Fast-Settling Mode
Figure 23.
Figure 24.
9
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