Rainbow Electronics MAX9937 - Manual (Page 4)

MAX9937
Automotive Current-Sense Amplifier
with Reverse-Battery Protection
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V CC = 5V, V BAT = V RSP = 12V, V SENSE = V RS+ - V RS- = 0, R RSP = R RSN = 500
Ω, R
OUT = 10k
Ω, T
A = +25°C, unless otherwise noted.
See the Typical Application Circuit.)
0
200
100
400
300
500
600
-40 40 0 80 120 160
OFFSET VOLTAGE vs. TEMPERATURE
MAX9937 toc02
TEMPERATURE ( °C)
OFFSET VOLTAGE (
μ
V)
100
400
300
200
600
500
700
800
4 12 16 8 20 24 28
OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGE
MAX9937 toc03
COMMON-MODE VOLTAGE (V)
OFFSET VOLTAGE (
μ
V)
T A = +25 °C
T A = +125 °C
T
A
= -40 °C
0 -700
-500
-400
-300
-200
-100
0
3.0 3.5 4.0 4.5 5.0
OFFSET VOLTAGE
vs. POWER-SUPPLY VOLTAGE
MAX9937 toc04
POWER-SUPPLY VOLTAGE (V)
OFFSET VOLTAGE (
μ
V)
-600
T A = +125 °C
T A = -40 °C
T A = +25 °C
AC COMMON-MODE REJECTION RATIO
C IN = 220nF
MAX9937 toc05
FREQUENCY (Hz)
CMRR (dBV)
100k 10k 1k 100 10
-100
-80
-60
-40
-20
0
-120
1 1M
C LOAD = 10pF
C LOAD = 1nF
C
LOAD
= 100pF
AC POWER-SUPPLY REJECTION RATIO
C IN = 220nF
MAX9937 toc06
FREQUENCY (Hz)
PSRR (dBV)
100k 10k 1k 100 10
-120
-100
-80
-60
-40
-20
0
-140
1 1M
C LOAD = 100pF
C LOAD = 10pF
C
LOAD
= 1nF
0
10
5
20
15
30
25
35
25 100 175 250 325 400 475 550
OFFSET VOLTAGE HISTOGRAM
MAX9937 toc01
OFFSET VOLTAGE ( μV)
FREQUENCY (%)