ADT7490
TYPICAL PERFORMANCE CHARACTERISTICS (Cont’d)
0.6
100 mV
0.4
250 mV
0.2
0
−0.2
−0.4
−0.6
−0.8
−1.0
−1.2
0 100 200
300 400 500 600
POWER SUPPLY NOISE FREQUENCY (MHz)
Figure 11. Remote Temperature Error vs. Power
Supply Noise Frequency
20
15
10
100 mV
60 mV
5
40 mV
0
−5
−10
0
100 200 300 400 500 600
COMMON-MODE NOISE FREQUENCY (MHz)
Figure 12. Temperature Error vs. Common-Mode
Noise Frequency
160
140
120
100
80
60
100 mV
40
60 mV
20
0
−20
0
40 mV
100 200 300 400 500 600
DIFFERENTIAL MODE NOISE FREQUENCY (MHz)
Figure 13. Temperature Error vs. Differential Mode
Noise Frequency
5
0
DEV 3
−5
DEV 2
−10
−15
DEV 1
−20
−25
−30
−35
0 2 4 6 8 10 12 14 16 18 20 22
CAPACITANCE (nF)
Figure 14. Temperature Error vs. Capacitance
Between D+ and D−
1.5
DEV 2
1.0
DEV 1
DEV 3
0.5
0
−0.5
−1.0
−1.5
−2.0
3.0 3.1 3.2 3.3 3.4 3.5 3.6
VDD (V)
Figure 15. TACH Accuracy vs. Supply Voltage
8
6
DEV 3
4
2
DEV 2
0
−2
DEV 1
−4
−6
−8
−40 −20
0 20 40 60 80
TEMPERATURE (°C)
100 120
Figure 16. TACH Accuracy vs. Temperature
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