公开(公告)号：US20110215959A1

公开(公告)日：2011-09-08

申请号：US13127141

申请日：2009-10-28

申请人： Akira Matsuzawa ,  Masaya Miyahara

发明人： Akira Matsuzawa ,  Masaya Miyahara

IPC分类号： H03M1/36 ,  H03K5/26

CPC分类号： H03K5/2481 ,  H03K3/356139 ,  H03K5/249 ,  H03M1/0682 ,  H03M1/204 ,  H03M1/365

摘要： To provide a comparator and an A/D converter having the comparator. The comparator includes a differential amplifier circuit section and a differential latch circuit section. A first input voltage signal, a second input voltage signal and a clock signal are inputted to the differential amplifier circuit section. The differential amplifier circuit section operates base on the clock signal to output a first output voltage signal and a second output voltage signal which respectively correspond to the value the input voltage signal and the value of the reference voltage signal and are amplified. The differential latch circuit section operates based on the first and second output voltage signals to keep and output a comparison result between the first input voltage signal and the second input voltage signal.

摘要翻译： 提供具有比较器的比较器和A / D转换器。 比较器包括差分放大器电路部分和差分锁存电路部分。 第一输入电压信号，第二输入电压信号和时钟信号被输入到差分放大器电路部分。 差分放大器电路部分基于时钟信号进行工作，以输出分别对应于输入电压信号的值和参考电压信号的值并被放大的第一输出电压信号和第二输出电压信号。 差分锁存电路部分基于第一和第二输出电压信号进行工作，以保持并输出第一输入电压信号和第二输入电压信号之间的比较结果。

公开(公告)号：US08947287B2

公开(公告)日：2015-02-03

申请号：US13593868

申请日：2012-08-24

申请人： Akira Matsuzawa ,  Masaya Miyahara

发明人： Akira Matsuzawa ,  Masaya Miyahara

IPC分类号： H03M1/34 ,  H03M1/16

CPC分类号： H03M1/165

摘要： An A-type converter circuit compares an input voltage with multiple threshold voltages, judges which segment it belongs to, and generates first and second voltages with the input voltage segment between them. The A-type converter circuit generates third and fourth voltages by amplifying the differences between the first and the input voltages and between the second and the input voltages. A B-type converter circuit divides the range between the third and fourth voltages into multiple segments, and judges which segment includes the common voltage. Subsequently, the B-type converter circuit generates fifth and sixth voltages with the common voltage segment between them. The B-type converter circuit generates a seventh (the next stage's third voltage) and an eighth voltage by amplifying the differences between the fifth and the common voltages and between the sixth and the common voltages.

摘要翻译： A型转换器电路将输入电压与多个阈值电压进行比较，判断其属于哪个段，并且通过它们之间的输入电压段产生第一和第二电压。 A型转换器电路通过放大第一和输入电压之间以及第二和输入电压之间的差异来产生第三和第四电压。 B型转换器电路将第三和第四电压之间的范围划分为多个段，并判断该段包括公共电压。 随后，B型转换器电路在它们之间产生公共电压段的第五和第六电压。 B型转换器电路通过放大第五和公共电压之间以及第六和公共电压之间的差异来产生第七（下一级的第三电压）和第八电压。

公开(公告)号：US08362934B2

公开(公告)日：2013-01-29

申请号：US13127141

申请日：2009-10-28

申请人： Akira Matsuzawa ,  Masaya Miyahara

发明人： Akira Matsuzawa ,  Masaya Miyahara

IPC分类号： H03M1/06

CPC分类号： H03K5/2481 ,  H03K3/356139 ,  H03K5/249 ,  H03M1/0682 ,  H03M1/204 ,  H03M1/365

摘要： To provide a comparator and an A/D converter having the comparator. The comparator includes a differential amplifier circuit section and a differential latch circuit section. A first input voltage signal, a second input voltage signal and a clock signal are inputted to the differential amplifier circuit section. The differential amplifier circuit section operates base on the clock signal to output a first output voltage signal and a second output voltage signal which respectively correspond to the value the input voltage signal and the value of the reference voltage signal and are amplified. The differential latch circuit section operates based on the first and second output voltage signals to keep and output a comparison result between the first input voltage signal and the second input voltage signal.

摘要翻译： 提供具有比较器的比较器和A / D转换器。 比较器包括差分放大器电路部分和差分锁存电路部分。 第一输入电压信号，第二输入电压信号和时钟信号被输入到差分放大器电路部分。 差分放大器电路部分基于时钟信号进行工作，以输出分别对应于输入电压信号的值和参考电压信号的值并被放大的第一输出电压信号和第二输出电压信号。 差分锁存电路部分基于第一和第二输出电压信号进行工作，以保持并输出第一输入电压信号和第二输入电压信号之间的比较结果。

公开(公告)号：US20100164765A1

公开(公告)日：2010-07-01

申请号：US12319090

申请日：2008-12-31

申请人： Masaya Miyahara ,  Hasnain Lakdawala

发明人： Masaya Miyahara ,  Hasnain Lakdawala

IPC分类号： H03M3/00 ,  H03M1/66 ,  H03M1/10

CPC分类号： H03M1/1061 ,  H03M1/747

摘要： Provided is a DAC with tuning circuitry in accordance with some embodiments for tuning current sources in the DAC. The DAC may be used for a sigma-delta converter in some embodiments.

摘要翻译： 提供了一种具有根据一些实施例的用于调谐DAC中的电流源的调谐电路的DAC。 在一些实施例中，DAC可用于Σ-Δ转换器。

公开(公告)号：US20130044017A1

公开(公告)日：2013-02-21

申请号：US13593868

申请日：2012-08-24

申请人： Akira Matsuzawa ,  Masaya Miyahara

发明人： Akira Matsuzawa ,  Masaya Miyahara

IPC分类号： H03M1/36 ,  H03F3/45

CPC分类号： H03M1/165

摘要： An A-type converter circuit compares an input voltage with multiple threshold voltages, judges which segment it belongs to, and generates first and second voltages with the input voltage segment between them. The A-type converter circuit generates third and fourth voltages by amplifying the differences between the first and the input voltages and between the second and the input voltages. A B-type converter circuit divides the range between the third and fourth voltages into multiple segments, and judges which segment includes the common voltage. Subsequently, the B-type converter circuit generates fifth and sixth voltages with the common voltage segment between them. The B-type converter circuit generates a seventh (the next stage's third voltage) and an eighth voltage by amplifying the differences between the fifth and the common voltages and between the sixth and the common voltages.

摘要翻译： A型转换器电路将输入电压与多个阈值电压进行比较，判断其属于哪个段，并且通过它们之间的输入电压段产生第一和第二电压。 A型转换器电路通过放大第一和输入电压之间以及第二和输入电压之间的差异来产生第三和第四电压。 B型转换器电路将第三和第四电压之间的范围划分为多个段，并判断该段包括公共电压。 随后，B型转换器电路在它们之间产生公共电压段的第五和第六电压。 B型转换器电路通过放大第五和公共电压之间以及第六和公共电压之间的差异来产生第七（下一级的第三电压）和第八电压。