公开(公告)号：US20040160349A1

公开(公告)日：2004-08-19

申请号：US10385202

申请日：2003-03-10

Applicant: STMicroelectronics Limited

Inventor： Arnaud Laflaquiere

IPC: H03M001/66 ,  H03M001/78

CPC classification number: G06J1/00 ,  H03K4/026

Abstract: A ramp generator includes a resistance ladder supplied with a constant current. Switches are closed in sequence on the resistance ladder to generate the ramp voltage. By using control logic to decode the sequence, a looped shift register is used to close the switches.

Abstract translation: 斜坡发生器包括提供恒定电流的电阻梯。 开关按顺序关闭在电阻梯以产生斜坡电压。 通过使用控制逻辑来解码序列，使用循环移位寄存器来关闭开关。