Datasheet

AD7846
Rev. G | Page 8 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
1V 2mV 20µs
–0.40VA1
08490-009
Figure 9. AC Feedthrough, V
REF+
= 1 V rms, 10 kHz Sine Wave
FREQUENCY (Hz)
V
OUT
(mV p-p)
0
100
2
1k 10k 100k 1M
4
6
1
3
5
7
8
V
DD
= +15V
V
SS
= –15V
V
REF
+
= +1V rms
V
REF
–
= 0V
08490-010
Figure 10. AC Feedthrough to V
OUT
vs. Frequency
FREQUENCY (Hz)
30
0
10 100 1k 10k 100k 1M 10M
20
10
5
25
15
V
OUT
(V p-p)
V
DD
= +15V
V
SS
= –15V
V
REF+
= ±5V SINE WAVE
V
REF–
= 0V
GAIN = +2
08490-011
Figure 11. Large Signal Frequency Response
FREQUENCY (Hz)
NOISE SPECTRAL DENSITY (nV/√Hz)
0
100
100 1k 10k 100k 1M
200
300
400
50
150
250
350
450
500
V
REF+
= V
REF–
= 0V
GAIN = +1
DAC LOADED WITH ALL 1s
08490-012
Figure 12. Noise Spectral Density
50mV/DIV
5V/DIV
0.5µs/DIV
DATA
V
OUT
0
8490-013
Figure 13. Digital-to-Analog Glitch Impulse Without Internal Deglitcher
(10…000 to 011…111 Transition)
50mV/DIV
5V/DIV
DATA
5V/DIV
LDAC
1µs/DIV
V
OUT
0
8490-014
Figure 14. Digital-to-Analog Glitch Impulse with Internal Deglitcher
(10…000 to 011…111 Transition)