Rainbow Electronics MAX9921 User Manual
Page 2
MAX9921
Dual, 2-Wire Hall-Effect Sensor Interface
with Diagnostics
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
BAT
= 13.6V, V
DIAG
= 0V, V
OE
= 5V, IN1 = IN2 = no connection, R
ISET
= 63.4k
Ω, R
PU
= 10k
Ω at ERR, OUT1 and OUT2, T
A
= -40°C
to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
BAT to GND............................................................-0.3V to +60V
ISET to BAT ...........................................................-2.0V to +0.3V
IN1, IN2 to GND..........-5.0V to the lower of +60V or (V
BAT
+ 1V)
DIAG, OE to GND..................................................-0.3V to +6.0V
OUT1, OUT2, ERR to GND....................................-0.3V to +6.0V
Short-Circuit Duration of OUT1, OUT2, ERR to GND
or to 5.5V (individually)............................................Continuous
Current into Any Pin Except IN1, IN2 ...............................±20mA
Current into IN1, IN2.......................................................±100mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) .........444.4mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
BAT Supply Range
V
BAT
6
18
V
V
BAT
Low for ERR Output Active
V
BL
5.2
V
V
BAT
High for ERR Output Active
V
BH
22
V
I
BAT
Normal mode
1
1.3
mA
BAT Supply Current
I
SD
Shutdown mode, V
OE
= V
DIAG
= 0V
1
µA
HALL INPUTS (IN1 and IN2)
Input Current for Output High
I
IH
-11.5
mA
Input Current for Output Low
I
IL
-7.2
mA
Input Current Hysteresis for
High/Low Detection
I
IN,HYS
0.76
mA
Input Pullup Impedance
R
PU
V
BAT
= 6V, inputs IN1, IN2 with
I
IN
= -14mA
50
Ω
Input Voltage Interpreted as
Shorted to Battery
V
SB
Measured with respect to V
BAT
100
mV
Current Range Interpreted as
Open Circuit
I
OC
-2
+0.02
mA
Current Level Interpreted as
Shorted Sensor to Ground
I
SC
Not a sustained condition, reverts to -50µA
when detected
-23
mA