Instruction Manual

MAX9937
Automotive Current-Sense Amplifier
with Reverse-Battery Protection
_______________________________________________________________________________________ 5
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 .)
0
5
15
10
25
20
30
-0.115
-0.110
-0.105
-0.100
-0.095
-0.090
-0.085
GAIN ERROR HISTOGRAM
MAX9937 toc07
GAIN ERROR (%)
FREQUENCY (%)
-0.1
-0.2
-0.3
0
0.1
0.2
0.3
0.4
0.5
0.6
-40 400 80 120 160
GAIN ERROR vs. TEMPERATURE
MAX9937 toc08
TEMPERATURE (°C)
GAIN ERROR (%)
-0.8
-0.2
-0.4
-0.6
0
0.2
0.4
0.6
0.8
1.0
4128 16202428
GAIN ERROR vs. COMMON-MODE VOLTAGE
MAX9937 toc09
COMMON-MODE VOLTAGE (V)
GAIN ERROR (%)
T
A
= +25°C
T
A
= +125°C
T
A
= -40°C
0
1.0
0.5
2.0
1.5
2.5
3.0
-40 400 80 120 160
INPUT BIAS CURRENT vs. TEMPERATURE
MAX9937 toc10
TEMPERATURE (°C)
INPUT BIAS CURRENT (μA)
-1.00
0
-0.50
0.50
1.50
1.00
2.00
-40 400 80 120 160
INPUT BIAS CURRENT MISMATCH
vs. TEMPERATURE
MAX9937 toc11
TEMPERATURE (°C)
INPUT BIAS CURRENT MISMATCH (%)
2.00
2.04
2.12
2.08
2.16
2.20
412168 202428
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
MAX9937 toc12
COMMON-MODE VOLTAGE (V)
INPUT BIAS CURRENT (μA)