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The MAX1350–MAX1357 offer two programmable high-side
current-sense amplifiers and two drive amplifiers
integrated in a single package.
The current-sense amplifiers have a 5V to 32V common-mode
input range and provide a voltage output that is a
multiple of the sense voltage. The common-mode input
range is independent of supply voltage. An external
sense resistor determines the range of current monitored
by a current-sense amplifier. Gains of 2 or 10 are available
with a typical input-referred offset voltage of zero or
3mV. The 3mV offset option is ideal for applications where
offset nulling is required.
The drive amplifiers provide up to ±10mA of output current
capability and a high output capacitive load tolerance.
Output transients are limited to ±100mV during
power-up and power-down events. The drive amplifiers
feature a digitally controllable fast output clamp to
ground. The drive amplifier outputs are current limited
and are offered with gains of 2 or 4.
The drive amplifiers draw approximately 4.75mA, while
the current-sense amplifiers draw approximately 250µA
with full-scale sense inputs. In shutdown mode, the total
supply current reduces to less than 1µA.
The MAX1350–MAX1357 are available in a 20-pin
TSSOP package and operate over the extended (-40°C
to +85°C) temperature range.
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