Instruction Manual

MAX9937
Automotive Current-Sense Amplifier
with Reverse-Battery Protection
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(V
CC
= 5V, V
BAT
= V
RSP
= 12V, V
SENSE
= V
RS+
- V
RS-
= 0, R
RSP
= R
RSN
= 500Ω, R
OUT
= 10kΩ, T
A
= +25°C, unless otherwise noted.
See the
Typical Application Circuit .)
4μs/div
OUTPUT SLEW RATE
V
SENSE
= -5mV TO +5mV
OUT
50mV/div
IN
10mV/div
MAX9937 toc19
+5
-5
0V
4μs/div
OUTPUT SLEW RATE
V
SENSE
= 5mV TO 200mV
OUT
2V/div
IN
100mV/div
MAX9937 toc20
100ms/div
LOAD-DUMP PROTECTION
OUT
1V/div
V
CM
10V/div
MAX9937 toc21
4μs/div
REVERSE-BATTERY PROTECTION
OUT
2V/div
V
CM
10V/div
MAX9937 toc22
RSP
5V/div
OUTPUT-VOLTAGE NONLINEARITY
vs. SENSE VOLTAGE
MAX9937 toc23
SENSE VOLTAGE (mV)
% OF FULL-SCALE
10080604020
-0.05
0
0.05
0.10
0.15
0.20
-0.10
1 120 140 160 180 200
T
A
= +25°C
T
A
= +125°C
T
A
= -40
°
C
2.00
1.00
0
3.00
4.00
5.00
6.00
7.00
8.00
9.00
-40 400 80 120 160
MAXIMUM OUTPUT CURRENT
vs. TEMPERATURE
MAX9937 toc24
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
V
BAT
= 28V
V
BAT
= 12V
V
BAT
= 4V