MAX9921 Maxim Integrated Products, MAX9921 Datasheet - Page 8

• Manufacturer Part Number: MAX9921
• Description: 2-Wire Hall-Effect Sensor Interface
• Manufacturer: Maxim Integrated Products

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Dual, 2-Wire Hall-Effect Sensor Interface
with Diagnostics
8
(V
BAT
_______________________________________________________________________________________
= 14V, T
A
= +25°C, unless otherwise noted.)
20.5
20.4
20.3
20.2
20.1
20.0
19.9
19.8
19.7
19.6
19.5
-10
-15
15
10
-5
5
0
THRESHOLD CURRENT vs. ISET RESISTOR
-15
-40 -25 -10 5 20 35 50 65 80 95 110 125
HYSTERESIS
V
BAT
-10
CHANGE IN ISET RESISTOR (%)
OVERVOLTAGE THRESHOLD
vs. TEMPERATURE
V
TEMPERATURE (°C)
V
-5
INPUT CURRENT FOR OUTPUT
HIGH AND INPUT CURRENT
FOR OUTPUT LOW
BAT
BAT
RISING, ERR GOES HIGH
FALLING, ERR GOES LOW
0
5
STARTUP OF HALL INPUT FROM SHUTDOWN
Typical Operating Characteristics (continued)
10
15
20μs/div
BLANKING PERIOD
V
V
I
V
IN_
OUT_
OE_
IN_
MAX9921 toc23
80
70
60
50
40
30
20
10
0
RESPONSE OF INPUT TO SHORT TO GROUND
6
T
10V/div
10mA/div
5V/div
5V/div
A
INPUT PULLUP RESISTANCE
= +125°C
T
9
A
= -40°C
vs. V
10μs/div
V
BAT
12
BAT
(V)
T
A
= +25°C
15
MAX9921 toc22
18
V
10V/div
0V
V
5V/div
0V
I
25mA/div
0A
IN1
IN1
ERR