Differential Output Stage of an Amplification Device, for Driving a Load

摘要

Differential output stage (200) of an amplification device, for driving a load, comprises a first (201) and a second (202) differential output stage portion. The first differential output stage portion (201) comprises: a first (M1PSW) and a second (M1NSW) output circuit; a first driving circuit (210) comprising a first biasing circuit (M2P, M3N, M4N, R11, I11); a second driving circuit (220) comprising a second biasing circuit (I41, R41, M4P, M3P, M2N). The first differential output stage portion (201) comprises: a third output circuit (M2PSW) connected between a first node (N1) of said first biasing circuit (M2P, M3N, M4N, R11, I11) and a first differential output terminal (01), having a third driving terminal (DT3) connected to a first driving terminal (DT1); a fourth output circuit (M2NSW) connected between a first node (N4) of the second biasing circuit (I41, R41, M4P, M3P, M2N) and the first differential output terminal (01), having a fourth driving terminal (DT4) connected to a second driving terminal (DT2).

主权项

1. Differential output stage of an amplification device, for driving a load, comprising:
a first differential output stage portion having a first differential input terminal and a first differential output terminal, said first differential input terminal comprising a first input terminal and a second input terminal; a second differential output stage portion having a second differential input terminal and a second differential output terminal said second differential input terminal comprising a third input terminal and a fourth input terminal, the load being electrically connected between said first and second differential output terminal; the first differential output stage portion further comprising:
a first output circuit connected between a first reference potential and said first differential output terminal;a second output circuit connected between a second reference potential and said first differential output terminal;a first driving circuit of the first output circuit arranged to connect said first input terminal to a first driving terminal of said first output circuit, said first driving circuit comprising a first biasing circuit arranged to provide to the first driving terminal a first driving signal;a second driving circuit of the second output circuit arranged to connect said second input terminal to a second driving terminal of said second output circuit, said second driving circuit comprising a second biasing circuit arranged to provide to the second driving terminal a second driving signal; wherein the first differential output stage portion further comprises:
a third output circuit connected between a first node of said first biasing circuit and the first differential output terminal, said third output circuit having a third driving terminal connected to said first driving terminal,a fourth output circuit connected between a first node of said second biasing circuit and the first differential output terminal, said fourth output circuit having a fourth driving terminal connected to said second driving terminal.