Datasheet

(V
CC
= 5V, V
BAT
= V
RSP
= 12V, V
SENSE
= V
RS+
- V
RS-
= 0V, R
RSP
= R
RSN
= 500Ω, R
OUT
= 10kΩ, T
A
= +25°C, unless otherwise
noted. See the Typical Application Circuit.)
GAIN vs. FREQUENCY REFERENCED
TO DC GAIN (C
IN
= 220nF)
MAX9937 toc18
FREQUENCY (Hz)
GAIN (dB)
100k10k1k100
-30
-20
-10
0
10
-40
10 1M
C
LOAD
= 100nF
C
LOAD
= 10pF
C
LOAD
= 1nF
16.0
17.0
16.5
19.0
18.5
18.0
17.5
19.5
20.0
-40 400 80 120 160
SUPPLY CURRENT vs. TEMPERATURE
MAX9937 toc17
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
15
17
16
18
19
3.0 3.83.63.2 3.4 4.0 4.2 4.4 4.6 4.8 5.0
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX9937 toc16
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
80
1.2
1.6
0.8
0.4
0
3.0 4.03.5 4.5 5.0
INPUT BIAS CURRENT MISMATCH
vs. SUPPLY VOLTAGE
MAX9937 toc15
SUPPLY VOLTAGE (V)
INPUT BIAS CURRENT MISMATCH (%)
0
1.0
0.5
2.0
1.5
2.5
3.0
3.0 4.03.5 4.5 5.0
INPUT BIAS CURRENT
vs. SUPPLY VOLTAGE
MAX9937 toc14
SUPPLY VOLTAGE (V)
INPUT BIAS CURRENT (µA)
0
0.4
1.2
0.8
1.6
2.0
4 12 168 20 24 28
INPUT BIAS CURRENT MISMATCH
vs. COMMON-MODE VOLTAGE
MAX9937 toc13
COMMON-MODE VOLTAGE (V)
INPUT BIAS CURRENT MISMATCH (%)
Maxim Integrated │ 6
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MAX9937 Current-Sense Amplier with
Reverse-Battery Protection
Typical Operating Characteristics (continued)