公开(公告)号：US20090212983A1

公开(公告)日：2009-08-27

申请号：US12389782

申请日：2009-02-20

申请人： Akihiro FUKUZAWA ,  Nobuyuki IMAI ,  Satoru ITO

发明人： Akihiro FUKUZAWA ,  Nobuyuki IMAI ,  Satoru ITO

IPC分类号： H03M1/12

CPC分类号： H03M1/1019 ,  H03F3/45475 ,  H03F3/45928 ,  H03F2200/405 ,  H03F2200/408 ,  H03F2203/45136 ,  H03F2203/45138 ,  H03F2203/45522 ,  H03F2203/45586 ,  H03F2203/45588 ,  H03M1/183

摘要： An integrated circuit device includes an amplifier circuit that includes first to Nth amplifiers, an A/D converter, first to Nth offset adjustment registers that are provided corresponding to the first to Nth amplifiers and store first to Nth offset adjustment data, first to Nth D/A converters provided corresponding to the first to Nth amplifiers, first to Nth offset value storage sections that store first to Nth offset value data, and a control circuit that calculates the first to Nth offset adjustment data based on the first to Nth offset value data, and sets the first to Nth offset adjustment data in the first to Nth offset adjustment registers.

摘要翻译： 集成电路装置包括放大器电路，其包括第一至第N放大器，A / D转换器，对应于第一至第N放大器提供的第一至第N偏移调整寄存器，并存储第一至第N偏移调整数据，第一至第N D / A转换器，其对应于存储第一至第N偏移值数据的第一至第N放大器，第一至第N偏移值存储部分，以及控制电路，其基于第一至第N偏移值数据计算第一至第N偏移调整数据 并且在第一至第N偏移调整寄存器中设置第一至第N偏移调整数据。

公开(公告)号：US20090212860A1

公开(公告)日：2009-08-27

申请号：US12389681

申请日：2009-02-20

申请人： Akihiro FUKUZAWA ,  Satoru ITO ,  Nobuyuki IMAI

发明人： Akihiro FUKUZAWA ,  Satoru ITO ,  Nobuyuki IMAI

IPC分类号： H03F1/00

CPC分类号： H03F3/45475 ,  G01D3/022 ,  H03F3/45977 ,  H03F2203/45138 ,  H03F2203/45212 ,  H03F2203/45522 ,  H03G3/30

摘要： An integrated circuit device includes an amplifier circuit that includes first to Nth amplifiers that are cascaded and receives an input signal, an A/D converter that performs an A/D conversion process on a signal amplified by the amplifier circuit, first to Nth D/A converters that are provided corresponding to the first to Nth amplifiers and used to perform an offset adjustment of the first to Nth amplifiers, and a control circuit that sets an offset adjustment of the first to Nth amplifiers using the first to Nth D/A converters and a gain adjustment of the first to Nth amplifiers.

摘要翻译： 集成电路装置包括放大电路，其包括级联并接收输入信号的第一至第N放大器，对由放大器电路放大的信号执行A / D转换处理的A / D转换器，第一至第N / A转换器，其对应于第一至第N放大器提供并用于执行第一至第N放大器的偏移调整;以及控制电路，其使用第一至第N D / A转换器设置第一至第N放大器的偏移调整 以及第一至第N放大器的增益调整。

公开(公告)号：US20090160693A1

公开(公告)日：2009-06-25

申请号：US12343796

申请日：2008-12-24

申请人： Akihiro FUKUZAWA ,  Nobuyuki IMAI ,  Satoru ITO

发明人： Akihiro FUKUZAWA ,  Nobuyuki IMAI ,  Satoru ITO

IPC分类号： H03M1/12

CPC分类号： H03M1/002 ,  H03M1/66

摘要： An A/D conversion circuit includes a continuous-time filter that performs a filtering process on an input signal, an SCF that is provided in a subsequent stage of the continuous-time filter and performs a filtering process utilizing the continuous-time filter as a prefilter, a cut-off frequency of the SCF being variably set corresponding to a frequency band of the input signal, an A/D converter that is provided in a subsequent stage of the SCF and performs an A/D conversion operation utilizing the continuous-time filter and the SCF as prefilters, and a digital filter that is provided in a subsequent stage of the A/D converter and performs a digital filtering process utilizing the continuous-time filter and the SCF as prefilters, a cut-off frequency of the digital filter being variably set corresponding to the frequency band of the input signal.

摘要翻译： A / D转换电路包括对输入信号执行滤波处理的连续时间滤波器，在连续时间滤波器的后续级中提供的SCF，并且使用连续时间滤波器作为滤波处理 预滤波器，对应于输入信号的频带可变地设定的SCF的截止频率，设置在SCF的后续级中的A / D转换器，并利用连续输出信号进行A / D转换操作， 时间滤波器和作为前置滤波器的SCF，以及在A / D转换器的后续级中提供的数字滤波器，并且使用连续时间滤波器和SCF作为预滤波器执行数字滤波处理，截止频率为 数字滤波器根据输入信号的频带可变地设定。

公开(公告)号：US20100271130A1

公开(公告)日：2010-10-28

申请号：US12748861

申请日：2010-03-29

申请人： Akihiro FUKUZAWA

发明人： Akihiro FUKUZAWA

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45941 ,  H03F2200/451 ,  H03F2203/45212 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45604

摘要： An amplifier circuit includes an amplifier section that includes a P-type differential section, an N-type differential section, and an output section, an offset adjustment section that adjusts an offset of the amplifier section, a first offset adjustment register that stores a first offset adjustment value for the P-type differential section, a second offset adjustment register that stores a second offset adjustment value for the N-type differential section, and a control section that sets the first offset adjustment value in the offset adjustment section in a first operation mode in which the P-type differential section operates, and sets the second offset adjustment value in the offset adjustment section in a second operation mode in which the N-type differential section operates.

摘要翻译： 放大器电路包括：放大器部分，包括P型差分部分，N型差分部分和输出部分;偏移调整部分，其调整放大部分的偏移;第一偏移调整寄存器， P型差分部分的偏移调整值，存储N型差分部分的第二偏移调整值的第二偏移调整寄存器，以及将偏移调整部中的第一偏移调整值设定为第一偏移调整值的控制部， 操作模式，其中P型差分部分操作，并且在N型差分部分操作的第二操作模式中将偏移调整部分中的第二偏移调整值设定。