Datasheet

Data Sheet AD5624R/AD5644R/AD5664R
Rev. C | Page 17 of 28
Figure 47. Noise Spectral Density, Internal Reference
Figure 48. Total Harmonic Distortion
Figure 49. Settling Time vs. Capacitive Load
Figure 50. Multiplying Bandwidth
FREQUENC
Y
(Hz)
OUTPUT NOISE (nV/√Hz)
800
0
100
200
300
400
500
600
700
100
10k
1k 100k
1M
V
DD
= 3V
V
REFOUT
= 1.25V
V
DD
= 5V
V
REFOUT
= 2.5V
T
A
= 25°C
MIDSCALE LOADED
05856-054
FREQUENCY (Hz)
AMPLITUDE (dB)
–20
–50
–80
–30
–40
–60
–70
–90
–100
2k 4k 6k 8k 10k
V
DD
= 5V
T
A
= 25°C
DAC LOADED WITH FULL SCALE
V
REF
= 2V ± 0.3V p-p
05856-055
CAPACITANCE (nF)
TIME (µs)
16
14
12
10
8
6
4
0 1 2 3 4 5 6 7 98 10
V
REF
= V
DD
T
A
= 25°C
V
DD
= 5V
V
DD
= 3V
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FREQUENCY (Hz)
AMPLITUDE (dB)
5
–40
10k 100k 1M 10M
–35
–30
–25
–20
–15
–10
–5
0
V
DD
= 5V
T
A
= 25°C
05856-057