发明申请
- 专利标题: DELTA SIGMA-TYPE A/D CONVERTER
- 专利标题(中): DELTA SIGMA型A / D转换器
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申请号: US12911286申请日: 2010-10-25
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公开(公告)号: US20110037633A1公开(公告)日: 2011-02-17
- 发明人: Toshio KUMAMOTO , Takashi Okuda , Tatsuo Sengoku , Akira Kitaguchi
- 申请人: Toshio KUMAMOTO , Takashi Okuda , Tatsuo Sengoku , Akira Kitaguchi
- 申请人地址: JP Kanagawa
- 专利权人: RENESAS ELECTRONICS CORPORATION
- 当前专利权人: RENESAS ELECTRONICS CORPORATION
- 当前专利权人地址: JP Kanagawa
- 优先权: JP2008-113932 20080424
- 主分类号: H03M1/20
- IPC分类号: H03M1/20
摘要:
There is provided a technique for reducing the adverse effect of idle tones in the channels in a ΔΣ-type A/D converter including a plurality of channels for converting analog input signals into digital signals. The ΔΣ-type A/D converter includes an L channel for converting a left analog input signal into a digital signal and an R channel for converting a right analog input signal into a digital signal. Each of the L channel and the R channel includes a DC dither circuit for generating a DC addition voltage for shifting the frequency of an idle tone. In the L channel and the R channel, DC addition voltages generated by DC dither circuits are different from each other.
公开/授权文献
- US07952506B2 ΔΣ-type A/D converter 公开/授权日:2011-05-31