AD7846–Typical Performance Curves
8
V
DD
= +15V
V
SS
= –15V
V
REF+
= +1Vrms
V
REF–
= 0V
V
OUT
– V p-p
20
30
V
DD
= +15V
V
SS
= –15V
V
REF+
= 5V SINE WAVE
V
REF–
= 0V
GAIN = +2
6
V
OUT
– mV p-p
4
10
2
0
10
2
10
3
10
4
10
5
FREQUENCY – Hz
10
6
0
10
1
10
2
10
3
10
4
10
5
FREQUENCY – Hz
10
6
10
7
Figure 4. AC Feedthrough. V
REF+
=
1 V rms, 10 kHz Sine Wave
Figure 5. AC Feedthrough vs.
Frequency
Figure 6. Large Signal Frequency
Response
500
NOISE SPECTRAL DENSITY – nV/ Hz
400
V
REF+
= V
REF–
= 0V
GAIN = +1
DAC LOADED WITH ALL 1s
V
OUT
50mV/DIV
V
OUT
50mV/DIV
300
200
LDAC
5V/DIV
100
DATA
5V/DIV
DATA
5V/DIV
0
10
2
10
3
10
4
10
5
FREQUENCY – Hz
10
6
0.5 s/DIV
1 s/DIV
Figure 7. Noise Spectral Density
Figure 8. Digital-to-Analog Glitch
Impulse Without Internal Deglitcher
(10 . . . 000 to 011 . . . 111 Transition)
Figure 9. Digital-to-Analog Glitch
Impulse With Internal Deglitcher
(10 . . . 000 to 011 . . . 111 Transition)
Figure 10. Pulse Response
(Large Signal)
Figure 11. Pulse Response
(Small Signal)
Figure 12. Spectral Response of
Digitally Constructed Sine Wave
–6–
REV. E
AD [ ANALOG DEVICES ]
