Datasheet

AD5628/AD5648/AD5668 Data Sheet
Rev. J | Page 18 of 30
0.0010
–0.0015
–0.0010
–0.0005
0
0.0005
0
9
87
6543
2
1
GLITCH AMPLITUDE (V)
TIME (µs)
05302-142
V
DD
= 5V
EXT REF = 5V
T
A
= 25°C
Figure 43. Analog Crosstalk
0.0020
–0.0015
–0.0010
–0.0005
0
0.0010
0.0015
0.0005
0 8
7
654321
GLITCH AMPLITUDE (V)
TIME (µs)
05302-143
V
DD
= 5V
EXT REF = 5V
T
A
= 25°C
Figure 44. DAC-to-DAC Crosstalk
6
–8
–6
–4
–2
2
4
0
0 108 97654321
OUTPUT VOLTAGE (µV)
TIME (s)
05302-144
V
DD
= 5.5V
EXT REF = 5V
DAC CODE = 0xFF00
Figure 45. 0.1 Hz to 10 Hz Output Noise Plot, External Reference
20
–20
–15
–10
–5
0
10
15
5
0 108 97654321
OUTPUT NOISE (µV)
TIME (s)
EXT REF = 2.5V
DAC CODE = 0xFF00
05302-145
Figure 46. 0.1 Hz to 10 Hz Output Noise Plot, External Reference
20
–20
–15
–10
–05
0
10
15
05
0 108 97654321
OUTPUT NOISE (µV)
TIME (s)
INT REF = 1.25V
DAC CODE = 0xFF00
05302-146
Figure 47. 0.1 Hz to 10 Hz Output Noise Plot, Internal Reference
800
0
100
200
300
400
600
700
500
100 1M100k10k1k
OUTPUT NOISE (nV/ Hz)
FREQUENCY (Hz)
V
REF
= 1.25V
V
REF
= 2.5V
05302-147
Figure 48. Noise Spectral Density, Internal Reference
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