Patent ID: 8222947
Filing Date: 2012-07-17
Classification: H03H

Abstract:
1. A signal converting circuit, for converting a first input signal and a second input signal into an output signal, comprising: a first single-to-differential circuit, arranged to generate a first signal having a first polarity and a second signal having a second polarity different from the first polarity; a second single-to-differential circuit, arranged to generate a third signal having the second polarity and a fourth signal having the first polarity; and a combining circuit, arranged to output the output signal according to at least a first combined signal having the first polarity, wherein the first combined signal is obtained according to at least two signals from the first signal, the second signal, the third signal, and the fourth signal; wherein the first single-to-differential circuit converts the first input signal having the first polarity into the first signal and the second signal; the second single-to-differential circuit, coupled to the first single-to-differential circuit, converts the second input signal having the second polarity into the third signal and the fourth signal; and the combining circuit, coupled to the first single-to-differential circuit and the second single-to-differential circuit, sums up the first signal and the fourth signal to generate the first combined signal directly serving as the output signal, and the combining circuit comprises: wherein the first combined signal is outputted from the second terminal of the first capacitor.