Patent ID: 7777530
Filing Date: 2010-08-17
Classification: H03K

Abstract:
1. A comparator module, having an output terminal, a first input terminal coupled to a first voltage source, and a second input terminal coupled to a second voltage source, the comparator module comprising: a current source module, coupled to a third voltage source, for generating a bias current; a first voltage level adjusting circuit module, coupled between the current source module and the first voltage source, for receiving the bias current and detecting a first input signal of the first voltage source to generate a third input signal; a second voltage level adjusting circuit module, coupled between the current source module and the second voltage source, for receiving the bias current and detecting a second input signal of the second voltage source to generate a fourth input signal; and a comparing circuit module, coupled between the first voltage level adjusting circuit module, the second voltage level adjusting circuit module, the first voltage source, the second voltage source, and the third voltage source, for receiving the third input signal and the fourth input signal to generate an output signal, the comparing circuit module comprising: