Datasheet

Layout
In order to dissipate sense-resistor heat from large
sense currents, solder the RS+ and the RS- pins to
large copper traces. Keep the part away from other
heat-generating devices.
For accurate measurement of V
SENSE
, the Kelvin
method is recommended. The current into RS+ and RS-
is only a few microamps; therefore, a short distance from
RS+ and RS- pins does not cause significant errors. It is
recommended to keep the value of R
SENSE
reasonably
higher than the values of the trace’s resistance.
Bidirectional, High-Side, Current-Sense
Amplifiers with Reference
1
2
3
4
5
10
9
8
7
6
GSEL
V
CC
OUT
REFOUTN.C.
RS+
RS-
MAX4069
μMAX
TOP VIEW
ADJGND
SHDN
OUT
REFOUT (REFIN)
(REFIN) FOR MAX4072 ONLY.
GND
1
2
8
7
GSEL
V
CC
RS-
RS+
Thin QFN/μMAX
3
4
6
5
MAX4070
MAX4071
MAX4072
SHDN
Pin Configurations
Chip Information
TRANSISTOR COUNT: 338
PROCESS: BiCMOS
Selector Guide
PART REFERENCE
SUPPLY
VOLTAGE
RANGE (V)
COMMON-
MODE RANGE
(V)
MAX4069 ADJUSTABLE 2.7 to 24 1.35 to 24
MAX4070 2.5V 3.6 to 24 1.35 to 24
MAX4071 1.5V 2.7 to 24 1.35 to 24
MAX4072 EXTERNAL 2.7 to 24 1.35 to 24
MAX4069–MAX4072
Maxim Integrated
13