公开(公告)号：EP3637618A1

公开(公告)日：2020-04-15

申请号：EP19202069.1

申请日：2019-10-08

申请人： MEDIATEK INC.

发明人： LIN, Ying-Zu ,  LIN, Chin-Y ,  TSAI, Chihhou ,  TSOU, Shan-Chih ,  HSIN, Lu Chao

IPC分类号： H03M1/08 ,  H03M1/46

摘要： A noise-shaping successive approximation analog-to-digital converter (NS-SAR ADC) using a passive noise-shaping technique with 1-input-pair SAR comparator is introduced. A residue sampling and integration circuit is coupled between a DAC and the comparator, for sampling a residue voltage generated by the DAC and charge-sharing of the sampled residue voltage. A first integral capacitor is coupled between a first input terminal of a comparator and a first output terminal of a DAC. After a first residue capacitor samples a residue generated by the DAC, the first residue capacitor is coupled to the first integral capacitor for charge-sharing of the residue voltage.

公开(公告)号：EP3282581A1

公开(公告)日：2018-02-14

申请号：EP17184734.6

申请日：2017-08-03

申请人： MediaTek Inc.

发明人： TSAI, Chihhou

IPC分类号： H03F3/50 ,  H03F1/30

CPC分类号： G05F1/561 ,  G05F3/247 ,  H03F1/301 ,  H03F1/34 ,  H03F1/56 ,  H03F3/505 ,  H03F2200/18 ,  H03F2200/21 ,  H03F2200/288 ,  H03F2200/555 ,  H03F2200/69

摘要： A buffer stage includes a control circuit. The control circuit includes a voltage generator, a voltage-to-current converter, and a current-to-voltage converter. The voltage generator is configured to generate a compensation voltage. The voltage-to-current converter is configured to convert the compensation voltage into a compensation current. The current-to-voltage converter is configured to convert the compensation current into a recovery compensation voltage. The recovery compensation voltage is arranged for modifying an output voltage of the buffer stage.

摘要翻译： 缓冲级包括控制电路。 控制电路包括电压发生器，电压 - 电流转换器和电流 - 电压转换器。 电压发生器被配置为产生补偿电压。 电压 - 电流转换器被配置为将补偿电压转换为补偿电流。 电流至电压转换器被配置为将补偿电流转换为恢复补偿电压。 恢复补偿电压被布置用于修改缓冲级的输出电压。