T
treez
Guest
Hello,
The below circuit gives a positive output voltage which corresponds to the current in the sense resistor.
(i.e. output to the micro is referenced to ground even though 'vout' of LT1787 is referenced to -3V, because the opamp circuit has 'level-shifted' it)
-Is their a lower-component-count method of level shifting a voltage that's referenced to -3V, to being referenced at ground?
LT1787 CURRENT MONITOR DATASHEET:
http://cds.linear.com/docs/en/datasheet/1787fc.pdf
LTspice simulation and schematic attached
The below circuit gives a positive output voltage which corresponds to the current in the sense resistor.
(i.e. output to the micro is referenced to ground even though 'vout' of LT1787 is referenced to -3V, because the opamp circuit has 'level-shifted' it)
-Is their a lower-component-count method of level shifting a voltage that's referenced to -3V, to being referenced at ground?
LT1787 CURRENT MONITOR DATASHEET:
http://cds.linear.com/docs/en/datasheet/1787fc.pdf
LTspice simulation and schematic attached
Last edited by a moderator: