MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
6
Maxim Integrated
Pin Description
PIN
MAX4376 MAX4376 MAX4377 MAX4378
SOT23-5 SO-8
µMAX-8/
SO-8
SO-14/
TSSOP-14
NAME FUNCTION
1 4 1, 7 1, 7, 8, 14 OUT, OUT_
Output Voltage. V
OUT_
is proportional to the magnitude of
the sense voltage (V
RS+
- V
RS-
). V
OUT_
is approximately
zero when V
RS
-
> V
RS
-
+
(no phase reversal).
2 3 4 11 GND Ground
31 8 4 V
CC
Supply Voltage
4 8 3, 5 3, 5, 10, 12 RS+, RS_+ Power connection to the external sense resistor
5 6 2, 6 2, 6, 9, 13 RS-, RS_- Load-side connection to the external sense resistor
— 2, 5, 7 — — N.C. No Connection. Not internally connected.
2µs/div
MAX4376H
LARGE-SIGNAL TRANSIENT RESPONSE
(V
SENSE
= 6mV to 100mV)
IN
45mV/div
OUT
3V/div
6mV
100mV
10V
0.6V
MAX4376 toc14
C
L
= 15pF
R
L
= 5kΩ
0
1.E+04 1.E+071.E+061.E+05
SMALL-SIGNAL GAIN
vs. FREQUENCY
15
5
35
25
45
20
10
40
30
MAX4376/7/8 toc15
FREQUENCY (Hz)
GAIN (dB)
MAX4376T
MAX4376F
MAX4376H
TIME (500ns)
OVERDRIVE RESPONSE
AV = +20V/V
IN
200mV/div
OUT
2V/div
350mV
750mV
V
OH
7V
MAX4376/7/8 toc16
0
100
50
200
150
350
300
250
400
OUTPUT LOW
vs. TEMPERATURE
MAX4376/7/8 toc17
TEMPERATURE (°C)
OUTPUT LOW (mV)
-50 -25 0 25 50 75 100 125
MAX4376H
MAX4376F
MAX4376T
Typical Operating Characteristics (continued)
(V
CC
= V
RS+
= 12V, V
SENSE
= 100mV, T
A
= +25°C.)
