LOW OHMIC CURRENT SENSOR CAPABLE OF USING UNTRIMMED RESISTOR TO PROVIDE REQUIRED RESISTANCE

摘要

A low ohmic current sensor capable of using untrimmed resistor to provide required resistance, including: an untrimmed resistor for a current to flow through; an adjustable amplifier unit, having an input port coupled with the untrimmed resistor to receive a current-sense voltage, an output port for providing an output voltage, and a control port for receiving at least one control signal to determine a voltage transfer curve relating the output voltage to the current-sense voltage; and a control unit, having a first port coupled with the control port to provide the at least one control signal, and a second port for accessing at least one control data, wherein the at least one control signal is generated according to the at least one control data.

主权项

1. A low ohmic current sensor capable of using untrimmed resistor to provide required resistance, comprising:
an untrimmed resistor having a first end for introducing in a current and a second end for outputting said current; an adjustable amplifier unit, having an input port coupled with said first end and said second end to receive a current-sense voltage, an output port for providing an output voltage, and a control port for receiving at least one control signal to determine a voltage transfer curve relating said output voltage to said current-sense voltage; a control unit, having a first port coupled with said control port to provide said at least one control signal, and a second port for accessing at least one control data, wherein said at least one control signal is generated according to said at least one control data; and a memory unit for storing said at least one control data.