Typical operating characteristics (continued) – Rainbow Electronics MAX9921 User Manual
Page 8
MAX9921
Dual, 2-Wire Hall-Effect Sensor Interface
with Diagnostics
8
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
BAT
= 14V, T
A
= +25°C, unless otherwise noted.)
V
BAT
OVERVOLTAGE THRESHOLD
vs. TEMPERATURE
TEMPERATURE (
°C)
V
BA
T
THRESHOLD (V)
MAX9921 toc19
-40 -25 -10 5
20 35 50 65 80 95 110 125
19.5
19.6
19.7
19.8
19.9
20.0
20.1
20.2
20.3
20.4
20.5
V
BAT
FALLING, ERR GOES LOW
V
BAT
RISING, ERR GOES HIGH
INPUT PULLUP RESISTANCE
vs. V
BAT
V
BAT
(V)
INPUT PULLUP RESISTANCE (
Ω
)
MAX9921 toc20
6
9
12
15
18
0
10
20
30
40
50
60
70
80
T
A
= +125
°C
T
A
= +25
°C
T
A
= -40
°C
THRESHOLD CURRENT vs. ISET RESISTOR
CHANGE IN ISET RESISTOR (%)
CHANGE IN THRESHOLD CURRENT (%)
MAX9921 toc21
-15
-10
-5
0
5
10
15
-15
-10
-5
0
5
10
15
HYSTERESIS
INPUT CURRENT FOR OUTPUT
HIGH AND INPUT CURRENT
FOR OUTPUT LOW
RESPONSE OF INPUT TO SHORT TO GROUND
MAX9921 toc22
10
μs/div
V
IN1
10V/div
I
IN1
25mA/div
0V
0V
0A
V
ERR
5V/div
STARTUP OF HALL INPUT FROM SHUTDOWN
MAX9921 toc23
20
μs/div
10V/div
5V/div
5V/div
10mA/div
BLANKING PERIOD
V
IN_
V
OUT_
V
OE_
I
IN_