Datasheet

Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
Note 1: All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2: Guaranteed by Total Output Voltage Error Test.
Note 3: Total OUT Voltage Error is the sum of gain and offset voltage errors.
Note 4: +6.25mV = 1/16 of +100mV full-scale voltage.
Note 5: V
SENSE
such that output stage is in saturation.
Note 6: V
OS
is extrapolated from the Gain Accuracy tests.
Note 7: The device does not experience phase reversal when overdriven.
ELECTRICAL CHARACTERISTICS (continued)
(V
RS+
= 0 to +28V, V
CC
= +3V to +28V, V
SENSE
= 0V, T
A
= T
MIN
to T
MAX
, R
LOAD
= ∞ unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4173T,
V
SENSE
= +100mV
1.7
MAX4173F,
V
SENSE
= +100mV
1.4
MAX4173H,
V
SENSE
= +100mV
1.2
Bandwidth BW
V
RS+
= +12V,
V
CC
= +12V,
C
LOAD
= 5pF
V
SENSE
= +6.25mV
(Note 4)
0.6
MHz
MAX4173T 20
MAX4173F 50Gain A
V
MAX4173H 100
V/V
T
A
= +25°C 0.5 ±2.5
∆A
V
MAX4173T/F V
SENSE
=
+10mV to +150mV,
V
CC
= V
RS+
= 12V
T
A
= -40°C to +85°C 4.0
T
A
= +25°C 0.5 ±2.5
Gain Accuracy
∆A
V
MAX4173H V
SENSE
=
+10mV to +100mV,
V
CC
= V
RS+
= 12V
T
A
= -40°C to +85°C 4.0
%
T
A
= +25°C 0.3 ±3
Input Offset Voltage
(Note 6)
V
OS
MAX4173TEUT,
V
RS+
= 12V
T
A
= -40°C to +85°C ±5
mV
V
SENSE
= +6.25mV
to +100mV
400
OUT Settling Time to 1% of
Final Value
V
CC
= +12V, V
RS+
= 12V,
C
LOAD
= 5pF
V
SENSE
= +100mV
to +6.25mV
800
ns
OUT Output Resistance R
OUT
12 kΩ
MAX4173T, V
SENSE
= 80mV, V
RS+
≥ +2V 60 84
MAX4173F, V
SENSE
= 32mV, V
RS+
≥ +2V 60 91
Power-Supply Rejection PSR
MAX4173H, V
SENSE
= 16mV, V
RS+
≥ +2V 60 95
dB
Power-Up Time to 1% of
Final Value
V
SENSE
= +100mV, C
LOAD
= 5pF 10 µs
Saturation Recovery Time V
CC
= +12V, V
RS+
= 12V (Note 7) 10 µs
Maxim Integrated
3
MAX4173