Datasheet

MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
3
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
RS+
= 0 to 28V, V
SENSE
= (V
RS+
- V
RS-
) = 0V, V
CC
= +3.0V to +28V, R
L
= ∞, T
A
= T
MIN
to T
MAX,
unless otherwise noted. Typical
values are at T
A
= 25°C.) (Note 1)
Note 1: All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2: Total OUT Voltage Error is the sum of gain and offset errors.
Note 3: 6.25mV = 1/16 of 100mV full-scale sense voltage.
Note 4: V
SENSE
such that V
OUT
is in saturation.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
SENSE
= 100mV
(gain = +20V/V)
2
V
SENSE
= 100mV
(gain = +50V/V)
1.7
V
SENSE
= 100mV
(gain = +100V/V)
1.2
Bandwidth BW
V
CC
= 12V
V
RS+
= 12V
C
LOAD
= 15pF
V
S E NS E
= 6.25m V (N ote 3) 0.5
MHz
Slew Rate SR V
SENSE
= 20mV to 100mV, C
LOAD
= 15pF 10 V/µs
MAX437_T
+20
MAX437_F +50
Gain A
V
MAX437_H +100
V/V
T
A
= T
M IN
to T
M AX
±5.5
V
SENSE
= 10mV to
150mV, V
CC
= 12V,
I
OUT
= 2mA, gain = 20
and 50, V
RS+
= 12V
T
A
= +25°C ±0.5 ±2.5
T
A
= T
M IN
to T
M AX
5.5
Gain Accuracy ∆A
V
V
S E N S E
= 10m V to
150m V , V
C C
= 20V ,
I
OU T
= 2m A, g ai n = 100,
V
R S +
= 12V
T
A
= +25°C ±0.5 ±2.5
%
V
SENSE
= 6.25mV
to 100mV
400
OUT Setting Time to 1% of Final
Value
V
C C
= 12V , V
RS +
= 12V ,
C
LOAD
= 15pF
V
SENSE
= 100mV
to 6.25mV
800
ns
Maximum Capacitive Load C
LOAD
No sustained oscillation 1000 pF
Output Resistance R
OUT
V
SENSE
= 100mV 5 Ω
Power-Supply Rejection PSR V
RS+
> 2V, V
OUT
= 1.6V, V
CC
= 3V to 28V 66 90 dB
Power-Up Time to 1% of Final
Value
V
SENSE
= 100mV, C
LOAD
= 15pF 2 µs
Saturation Recovery Time to
1% of Final Value
V
CC
= 12V, V
RS+
= 12V, C
LOAD
= 15pF,
V
SENSE
= 100mV
1µs
Reverse Recovery Time to 1%
of Final Value
V
CC
= 12V, V
RS
_ = 12V, C
LOAD
= 15pF,
V
SENSE
= -100mV to +100mV
1µs