1°C Accurate Remote/Local Temperature
Sensor with SMBus Serial Interface
Typical Operating Characteristics
(V
= +3.3V to +5.5V, T = +251C, unless otherwise noted.)
CC
A
TEMPERATURE ERROR vs.
POWER-SUPPLY NOISE FREQUENCY
TEMPERATURE ERROR vs.
COMMON-MODE NOISE FREQUENCY
TEMPERATURE ERROR vs.
REMOTE-DIODE TEMPERATURE
3
16
12
8
2
1
FAIRCHILD 2N3904
V
= 500mVp-p LOCAL
IN
V
= 500mVp-p REMOTE
2
1
IN
0
4
-1
0
0
-2
1
100
10k
1M
100M
1k
100k
10M
-50 -30 -10 10 30 50 70 90 110 130 150
FREQUENCY (Hz)
FREQUENCY (Hz)
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT vs.
SUPPLY VOLTAGE
TEMPERATURE ERROR vs.
DXP-DXN CAPACITANCE
8
7
6
5
4
3
2
1
0
100
90
80
70
60
50
40
V
= +5V
CC
0
10 20 30 40 50 60 70 80 90 100
DXP-DXN CAPACITANCE (nF)
3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0
SUPPLY VOLTAGE (V)
4
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