公开(公告)号：US4665381A

公开(公告)日：1987-05-12

申请号：US601247

申请日：1984-04-17

申请人： Eiji Masuda ,  Yasuhiko Fujita

发明人： Eiji Masuda ,  Yasuhiko Fujita

IPC分类号： H03M1/76 ,  H03M1/00 ,  H03K13/02

CPC分类号： H03M1/808 ,  H03M1/365

摘要： In a D/A converter, a reference voltage is divided into a plurality of divided voltages by a plurality of resistors connected in series. The divided voltages are respectively selected by switches which are turned on according to the contents of a digital input. With the use of an expanding bit or bits, a plurality of the switches are simultaneously turned on.

摘要翻译： 在D / A转换器中，通过串联连接的多个电阻将参考电压分成多个分压。 根据数字输入的内容，开关分别选择分压。 通过使用扩展位或位，多个开关同时导通。

公开(公告)号：US4560890A

公开(公告)日：1985-12-24

申请号：US526821

申请日：1983-08-26

申请人： Eiji Masuda ,  Kenji Matsuo ,  Yasuhiko Fujita

发明人： Eiji Masuda ,  Kenji Matsuo ,  Yasuhiko Fujita

IPC分类号： H03M1/36 ,  G01R17/06 ,  H03K5/08 ,  H03K5/24

CPC分类号： G01R17/06 ,  H03K5/249

摘要： An input voltage sampler samples the difference between two input voltages. An alternate switch switches at a period which is longer than twice the sampling period. The voltage difference is supplied through the alternate switch to a plurality of amplifiers. Prior to starting the amplifying operation, operating point setting circuits set the input level to the amplifiers at the operating point.

摘要翻译： 输入电压采样器对两个输入电压之间的差异进行采样。 交替开关的开关时间长于采样周期的两倍。 电压差通过交替开关提供给多个放大器。 在开始放大操作之前，工作点设置电路在工作点将输入电平设置为放大器。