High-Accuracy PWM Output Temperature
Sensors
Typical Operating Characteristics
(V CC = +3.3V, T A = +25°C, unless otherwise noted.)
T 1 AND T 2 TIMES
OUTPUT FREQUENCY vs. TEMPERATURE
OUTPUT FREQUENCY vs. SUPPLY VOLTAGE
vs. TEMPERATURE
50
40
30
45
40
35
TEMP = +25 ° C
TEMP = +125 ° C
39
34
29
TWO TYPICAL PARTS
T 2
24
20
30
19
10
0
25
20
TEMP = -40 ° C
14
9
T 1
-40
-15
10
35
60
85
110
3.0
3.5
4.0
4.5
5.0
5.5
-40
-10
20
50
80
110
140
3
2
TEMPERATURE ( ° C)
OUTPUT ACCURACY
vs. TEMPERATURE
210
200
190
180
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. TEMPERATURE
158
156
154
TEMPERATURE ( ° C)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
1
0
-1
-2
-3
170
160
150
140
130
120
110
100
V CC = +5.5V
V CC = +3.3V
152
150
148
146
144
142
140
-40
-10
20
50
80
110
-55
-25
5
35
65
95
125
155
3.0
3.5
4.0
4.5
5.0
5.5
TEMPERATURE ( ° C)
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
POWER-SUPPLY REJECTION RATIO
vs. TEMPERATURE
TEMPERATURE ( ° C)
1.0
0.5
0
-0.5
-1.0
POWER-SUPPLY REJECTION
vs. FREQUENCY
V AC = 100mVp-p
SUPPLY VOLTAGE (V)
-40
-15
10
35
60
85
110
0.01
0.1
1
10
100
1k
10k
TEMPERATURE ( ° C)
FREQUENCY (Hz)
_______________________________________________________________________________________
3
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