Datasheet

AD5680
Rev. A | Page 9 of 20
SAMPLE NUMBER
AMPLITUDE
2.502500
2.502250
2.502000
2.501750
2.501500
2.501250
2.501000
2.500750
2.500500
2.500250
2.500000
2.499750
2.499500
2.499250
2.499000
2.498750
0 150 200 25050 100 300 350 400 450 500 550
05854-005
V
DD
= V
REF
= 5V
T
A
= 25°C
13ns/SAMPLE NUMBER
1 LSB CHANGE AROUND
MIDSCALE (0x20000 TO 0x1FFFF)
GLITCH IMPULSE = 2.723nV-s
Figure 16. Digital-to-Analog Glitch Impulse (Negative)
SAMPLES × 6.5ns
AMPLITUDE
2.5010
2.4986
0
05854-020
2.4988
2.4990
2.4992
2.4994
2.4996
2.4998
2.5000
2.5002
2.5004
2.5006
2.5008
50 100 150 200 250 300 350 400 450 500
V
DD
= V
REF
= 5V
T
A
= 25°C
DAC LOADED WITH MIDSCALE
DIGITAL FEEDTHROUGH
= 0.201nV
Figure 17. Digital Feedthrough
FREQUENCY (kHz)
(dB)
–
20
–100
01
0
05854-018
–30
–40
–50
–60
–70
–80
–90
123456789
V
DD
= 5V
T
A
= 25°C
FULL SCALE LOADED
V
REF
= 2V ±300mV p-p
0
Figure 18. Total Harmonic Distortion
CAPACITANCE (nF)
TIME (µs)
16
14
12
10
8
6
4
012 34567 981
05854-027
V
REF
= V
DD
T
A
= 25°C
V
DD
=
5V
V
DD
=
3V
Figure 19. Settling Time vs. Capacitive Load
05854-019
5s/DIV
5µV/DIV
1
V
DD
= V
REF
= 5V
T
A
= 25°C
DAC LOADED WITH MIDSCALE
V
REF
Figure 20. 0.1 Hz to 10 Hz Output Noise Plot
FREQUENCY (Hz)
NOISE (nV/ Hz)
1000
0
100 1M
05854-013
1k 10k 100k
V
DD
= V
REF
= 5V
T
A
= 25°C
MIDSCALE LOADED
900
800
700
600
500
400
300
200
100
Figure 21. Noise Spectral Density