The INA231 is a current-shunt and power monitor
with a 1.8-V compliant I2C interface that features 16
programmable addresses. The INA231 monitors both
shunt voltage drops and bus supply voltage, providing
increased protection by asserting the ALERT pin if
the values are outside the programmed range.
Programmable calibration value, conversion time, and
averaging, combined with an internal multiplier,
enable direct readouts of current in amperes and
power in watts, thus reducing host processing.
The INA231 senses current on bus voltages that vary
from 0 V to 28 V, with the device powered from a
single 2.7-V to 5.5-V supply, drawing 330 μA (typical)
of supply current. The INA231 is specified over the
operating temperature range of –40°C to +125°C.
The INA231 is available in two versions: the INA231A
starts up performing continuous conversions of the
shunt and bus voltage, whereas the INA231B starts
up in low-current, power-down mode. INA231AIYFDR
INA231AIYFDT
INA231AIYFFR
INA231AIYFFT
INA231BIYFDR
INA231BIYFDT
资料下载
