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