公开(公告)号：EP2211331A1

公开(公告)日：2010-07-28

申请号：EP09252765.4

申请日：2009-12-10

申请人： Sony Corporation

发明人： Hyoudou, Kenji , Sony Semiconductor Kyushu Corp. ,  Ichirizuka, Tak , Sony Semiconductor Kyushu Corp. ,  Kimoto, Takuya , Sony Semiconductor Kyushu Corp. ,  Togo, Minoru , Sony Semiconductor Kyushu Corp.

IPC分类号： G09G3/36 ,  G09G3/00

CPC分类号： H03M1/108 ,  G09G3/006 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2330/12 ,  H03M1/109 ,  H03M1/662

摘要： A semiconductor integrated circuit is disclosed which includes: a first D/A converter; a second D/A converter; an amplifier configured to amplify an output of the first D/A converter; an operational amplifier configured to input an output of the second D/A converter; and a selector configured to effect switchover between a normal mode and a test mode, the normal mode being a mode in which the operational amplifier is caused to function as an amplifier for amplifying the output of the second D/A converter, the test mode being a mode in which the operational amplifier is caused to function as a comparator for comparing the output of the second D/A converter with the output of the first D/A converter.

摘要翻译： 公开了一种半导体集成电路，其包括：第一D / A转换器; 第二个D / A转换器; 放大器，配置成放大第一D / A转换器的输出; 运算放大器，被配置为输入所述第二D / A转换器的输出; 以及选择器，其被配置为在正常模式和测试模式之间进行切换，所述正常模式是使所述运算放大器用作用于放大所述第二D / A转换器的输出的放大器的模式，所述测试模式为 导致运算放大器用作用于将第二D / A转换器的输出与第一D / A转换器的输出进行比较的比较器的模式。