ADT7461 Datasheet, PDF (5/20 Pages) Analog Devices – ±1°C Temperature Monitor with Series Resistance Cancellation

ADT7461
TYPICAL CHARACTERISTICS
60
40
D+ TO GND
20
0
–20
D+ TO V_CC
–40
–60
–80
0
20
40
60
80
100
LEAKAGE RESISTANCE (MΩ)
Figure 3. Temperature Error vs. Leakage Resistance
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–3 –10 10
30 50 70 90
TEMPERATURE (°C)
110 130 150
Figure 4. Temperature Error vs. Actual
Temperature Using 2N3906
4
40mV NO FILTER
60mV NO FILTER
3
40mV WITH FILTER
60mV WITH FILTER
2
1
0
–1
–2
0
100
200
300
400
500
600
FREQUENCY (MHz)
Figure 5. Temperature Error vs. Differential Mode
Noise Frequency (With and Without R-C-R Filter
of 100 W–2.2 nF–100 W)
20
250mV EXTERNAL
15
10
100mV INTERNAL
5
0
–5
250mV INTERNAL
–10
100mV EXTERNAL
–15
0
20
40
FREQUENCY (MHz)
Figure 6. Temperature Error vs. Power Supply
Noise Frequency
0
–10
–20
–30
–40
–50
–60
–70
0
5
10
15
20
25
CAPACITANCE (nF)
Figure 7. Temperature Error vs. Capacitance
Between D+ and D−
180
160
140
120
100
80
60
40
20
0
−20
0
100mV NO FILTER
100mV WITH FILTER
100
200
300
400
500
600
FREQUENCY (MHz)
Figure 8. Temperature Error vs. 100 mV
Differential Mode Noise Frequency (With and
Without R-C-R Filter of 100 W–2.2 nF–100 W)
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