MAX9921 查看數據表（PDF） - Maxim Integrated
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MAX9921 Datasheet PDF : 16 Pages
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Dual, 2-Wire Hall-Effect Sensor Interface
with Diagnostics
Typical Operating Characteristics (continued)
(VBAT = 14V, TA = +25°C, unless otherwise noted.)
VBAT OVERVOLTAGE THRESHOLD
vs. TEMPERATURE
20.5
20.4
20.3
20.2
20.1
VBAT FALLING, ERR GOES LOW
20.0
19.9
19.8
19.7
VBAT RISING, ERR GOES HIGH
19.6
19.5
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
INPUT PULLUP RESISTANCE
vs. VBAT
80
70
60
TA = +125°C
50
TA = +25°C
40
30
20
TA = -40°C
10
0
6
9
12
15
18
VBAT (V)
THRESHOLD CURRENT vs. ISET RESISTOR
15
INPUT CURRENT FOR OUTPUT
HIGH AND INPUT CURRENT
10
FOR OUTPUT LOW
5
0 HYSTERESIS
-5
-10
-15
-15 -10 -5 0
5 10 15
CHANGE IN ISET RESISTOR (%)
RESPONSE OF INPUT TO SHORT TO GROUND
MAX9921 toc22
VIN1
10V/div
0V
10μs/div
VERR
5V/div
0V
IIN1
25mA/div
0A
STARTUP OF HALL INPUT FROM SHUTDOWN
MAX9921 toc23
VIN_
10V/div
BLANKING PERIOD
VOUT_
5V/div
VOE_
5V/div
IIN_
10mA/div
20μs/div
8 _______________________________________________________________________________________
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