The AMC3301 was selected due to its accuracy,
input voltage range, and the single low-side power
requirements of the device.
The TLV9002 was selected for its low cost, low
offset, small size, and dual channel package.
Select a low impedance, low-noise source for
AVDD which supplies the TLV9002 and AMC3301 as
well as provides the common-mode voltage for the
single-ended output.
For highest accuracy, use a precision shunt
resistor with a low temperature coefficient.
Select the current shunt for expected peak input
current levels.
For continuous operation, it is recommended that
the shunt resistors are not run at more than
two-thirds the rated current under normal
conditions as per IEEE standards. Further reducing
the shunt resistance or increasing the rated
wattage may be necessary for applications with
stringent power dissipation requirements.
Use the proper resistor divider values to set
the common-mode voltage on channel 1 of the
TLV9002.
Select the proper values for the gain setting
resistors on channel 2 of the TLV9002 so that the
single-ended output has an appropriate output
swing.