Delta-sigma modulator and method of driving delta-sigma modulator

A method of driving a delta-sigma modulator comprising:

• a first integration node to which a signal current is input;
• a second integration node to which a difference current between a fixed current and the signal current is input;
• a voltage-to-current converter that is connected between the first integration node and the second integration node, and converts a difference voltage between a voltage of the first integration node and a first reference voltage into a current and outputs the current;
• a 1-bit AD converter that compares a voltage of the second integration node with a second reference voltage and outputs a 1-bit digital signal;
• a feedback DA converter that draws current from the first integration node or the second integration node according to an output of the 1-bit AD converter;
• and
• a short-circuit switch that short-circuits the first integration node and the second integration node,
• the method comprising:
• turning on the short-circuit switch at a timing when the first integration node and the second integration node can be out of a balanced state, in driving the delta-sigma modulator.