公开(公告)号：US20030071666A1

公开(公告)日：2003-04-17

申请号：US10254443

申请日：2002-09-25

Applicant: STMicroelectronics Ltd.

Inventor： Toby Bailey

IPC: H03K004/06

CPC classification number: H03K4/026

Abstract: A ramp generator includes a resistance ladder supplied with a constant current. Switches are closed in sequence by a shift register to provide a stepped ramp output. The constant current is controlled by referencing an on-chip bandgap voltage that is used as an input to a feedback circuit controlling current through a reference resistor ladder.

Abstract translation: 斜坡发生器包括提供恒定电流的电阻梯。 开关按顺序由移位寄存器闭合，以提供阶梯式斜坡输出。 通过参考用作控制通过参考电阻梯的电流的反馈电路的输入的片上带隙电压来控制恒定电流。