An ultraprecise current sense amplifier that dramatically enhances efficiency and dynamic range is described.
Current sense amplifier
Accurate current measurement is indispensable in many electronic systems. The current is usually measured by amplifying the voltage it generates across a small value resistance. For systems that require a large dynamic measurement range, the sense resistance must be increased or the precision of the amplifier must be improved. Increasing the value of the sense resistor has the detrimental effect of increasing power dissipation. The better option is to ...