ADM1026
TYPICAL PERFORMANCE CHARACTERISTICS
25
110
100
20
90
80
70
15
10
D+ TO GND
5
60
50
40
30
20
0
–5
D+ TO V
CC
–10
–15
–20
–25
10
0
0
30
60
90
120
0
10
20
30
40 50
60
70
80
90 100 110
PIII TEMPERATURE (°C)
LEAKAGE RESISTANCE (MΩ)
Figure 4. Temperature Error vs. PCB Track Resistance
Figure 7. Pentium® III Temperature vs. ADM1026 Reading
5
14
12
10
8
0
–5
–10
250mV
100mV
6
–15
–20
4
2
0
–25
0
10
20
30
40
50
0
100
200
300
400
500
600
CAPACITANCE (nF)
FREQUENCY (MHz)
Figure 8. Temperature Error vs. Capacitance Between D+ and D–
Figure 5. Temperature Error vs. Power Supply Noise Frequency
80
70
12
100mV
60mV
10
40mV
60
50
40
8
6
4
2
0
30
100mV
20
60mV
40mV
10
0
100
200
300
400
500
600
0
100
200
300
400
500
600
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 9. Temperature Error vs. Differential-Mode Noise Frequency
Figure 6. Temperature Error vs. Common-Mode Noise Frequency
Rev. A | Page 8 of 56
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