Datasheet

Data Sheet AD5686R/AD5685R/AD5684R
Rev. B | Page 11 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 8. Internal Reference Voltage vs. Temperature (Grade B)
Figure 9. Internal Reference Voltage vs. Temperature (Grade A)
Figure 10. Reference Output Temperature Drift Histogram
Figure 11. Reference Long-Term Stability/Drift
Figure 12. Internal Reference Noise Spectral Density vs. Frequency
Figure 13. Internal Reference Noise, 0.1 Hz to 10 Hz
–40 –20 0
20
40 60
80 100
120
V
REF
(V)
TEMPERATURE (°C)
DEVICE 1
DEVICE 2
DEVICE 3
DEVICE 4
DEVICE 5
10485-212
2.4980
2.4985
2.4990
2.4995
2.5000
2.5005
2.5010
2.5015
2.5020
V
DD
= 5V
–40
–20 0 20 40 60 80 120100
V
REF
(V)
TEMPERATURE (°C)
DEVICE 1
DEVICE 2
DEVICE 3
DEVICE 4
DEVICE 5
10485-109
2.4980
2.4985
2.4990
2.4995
2.5000
2.5005
2.5010
2.5015
2.5020
V
DD
= 5V
90
0
10
20
30
40
50
60
70
80
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
NUMBER OF UNITS
TEMPERATURE DRIFT (ppm/°C)
10485-250
V
DD
= 5V
60
0
10
20
30
40
50
2.498 2.499 2.500 2.501 2.502
HITS
V
REF
(V)
0 HOUR
168 HOURS
500 HOURS
1000 HOURS
10485-251
V
DD
= 5.5V
1600
0
200
400
600
800
1000
1200
1400
10 100 1k 10k 100k 1M
NSD (nV/ Hz)
FREQUENCY (MHz)
10485-111
V
DD
= 5V
T
A
= 25°C
CH1 2µV M1.0s A CH1 160mV
1
T
10485-112
V
DD
= 5V
T
A
= 25°C