公开(公告)号：US20120274580A1

公开(公告)日：2012-11-01

申请号：US13097942

申请日：2011-04-29

Applicant: David Amory SOBEL ,  Xin DAI

Inventor： David Amory SOBEL ,  Xin DAI

IPC: G06F3/041 ,  H03K17/687

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: An apparatus that is configurable to perform a forward scan, a row scan, and a column scan is disclosed. The apparatus includes a path selection module coupled to a transmitter and a receiver. The path selection module includes a row-transmit switch, a column-receive switch, a row-receive switch, and a column-transmit switch that are configurable to form various transmit paths and receive paths to perform the forward scan, a row scan, and a column scan. The row-transmit switch and the column-transmit switch cascades switching transistors to protect against large voltage swings present in an output of the transmitter, controls the gate voltage that is applied to these switching transistors to protect against the large voltage swings, and includes additional protection circuitry to ensure their reliability. The column-receive switch and the row-receive switch uses thick oxide transistors to protect thin oxide transistors against the large voltage swings and/or includes additional protection circuitry to ensure their reliability.

Abstract translation: 公开了一种可配置为执行正向扫描，行扫描和列扫描的装置。 该装置包括耦合到发射机和接收机的路径选择模块。 路径选择模块包括可配置为形成各种发送路径和接收路径以执行正向扫描的行发送开关，列接收开关，行接收开关和列发送开关，行扫描， 和列扫描。 行发送开关和列发送开关将开关晶体管并联以防止发射器的输出中存在的大的电压摆动，控制施加到这些开关晶体管的栅极电压以防止大的电压摆幅，并且包括额外的 保护电路，确保其可靠性。 列接收开关和行接收开关使用厚氧化物晶体管来保护薄氧化物晶体管免受大电压摆动和/或包括额外的保护电路以确保其可靠性。