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1. 发明授权

US07868803B2 Semiconductor device having ΔΣ modulator, and semiconductor system 有权
标题翻译：具有＆Dgr＆amp; 调制器和半导体系统
公开(公告)号：US07868803B2
公开(公告)日：2011-01-11
申请号：US12445357
申请日：2007-10-11
申请人： Shiho Muraki , Naoya Iguchi , Kouichi Nagano , Kazuo Matsukawa , Masao Takayama
发明人： Shiho Muraki , Naoya Iguchi , Kouichi Nagano , Kazuo Matsukawa , Masao Takayama
IPC分类号： H03M3/00
CPC分类号： H03M3/364 , H03M3/424 , H03M3/454
摘要： A semiconductor device comprises an overflow detection circuit (5) which compares an output of at least one integrator in a ΔΣ modulator (13) with a predetermined value to output an overflow detection signal; an overflow frequency calculation circuit (6) which calculates an overflow frequency value that is the frequency of the output from the integrator being outside a normal range, based on the overflow detection signal, and outputs the overflow frequency value; an oscillation judgment circuit (7) which judges whether the ΔΣ modulator (13) is in the oscillation state or not based on the overflow frequency value; and an oscillation halt circuit which suppresses oscillation of the ΔΣ modulator (13) when the oscillation judgment circuit (7) judges that the ΔΣ modulator is in the oscillation state; wherein it is determined whether the output of the integrator is temporarily outside the normal range due to noise or the like or the output of the integrator is outside the normal range due to oscillation, by obtaining the frequency with which the output of the integrator is outside the normal range, and the oscillation of the ΔΣ modulator (13) is suppressed only when it is oscillated.
摘要翻译：一种半导体器件包括一个溢出检测电路（5），它将至少一个积分器的输出与“ 调制器（13）具有预定值以输出溢出检测信号; 溢出频率计算电路（6），根据上述溢出检测信号，计算作为正常范围以外的积分器的输出频率的溢出频率值，并输出溢出频率值; 振荡判断电路（7），判断“ 调制器（13）基于溢出频率值处于振荡状态; 以及抑制“Dgr”的振荡的振荡停止电路。调制器（13）当振荡判断电路（7）判断为＆Dgr＆调制器处于振荡状态; 其中，通过获得积分器的输出外部的频率，确定积分器的输出是否由于噪声等而暂时超出正常范围，或积分器的输出由于振荡而在正常范围之外正常范围和振荡的＆Dgr＆调制器（13）只有在振荡时被抑制。

2. 发明申请

US20100085228A1 SEMICONDUCTOR DEVICE HAVING AE MODULATOR, AND SEMICONDUCTOR SYSTEM 有权
标题翻译：具有AE调制器的半导体器件和半导体系统
公开(公告)号：US20100085228A1
公开(公告)日：2010-04-08
申请号：US12445357
申请日：2007-10-11
申请人： Shiho Muraki , Naoya Iguchi , Kouichi Nagano , Kazuo Matsukawa , Masao Takayama
发明人： Shiho Muraki , Naoya Iguchi , Kouichi Nagano , Kazuo Matsukawa , Masao Takayama
IPC分类号： H03M3/00
CPC分类号： H03M3/364 , H03M3/424 , H03M3/454
摘要： A semiconductor device comprises an overflow detection circuit (5) which compares an output of at least one integrator in a ΔΣ modulator (13) with a predetermined value to output an overflow detection signal; an overflow frequency calculation circuit (6) which calculates an overflow frequency value that is the frequency of the output from the integrator being outside a normal range, based on the overflow detection signal, and outputs the overflow frequency value; an oscillation judgment circuit (7) which judges whether the ΔΣ modulator (13) is in the oscillation state or not based on the overflow frequency value; and an oscillation halt circuit which suppresses oscillation of the ΔΣ modulator (13) when the oscillation judgment circuit (7) judges that the ΔΣ modulator is in the oscillation state; wherein it is determined whether the output of the integrator is temporarily outside the normal range due to noise or the like or the output of the integrator is outside the normal range due to oscillation, by obtaining the frequency with which the output of the integrator is outside the normal range, and the oscillation of the ΔΣ modulator (13) is suppressed only when it is oscillated.
摘要翻译：一种半导体器件包括一个溢出检测电路（5），它将至少一个积分器的输出与“ 调制器（13）具有预定值以输出溢出检测信号; 溢出频率计算电路（6），根据上述溢出检测信号，计算作为正常范围以外的积分器的输出频率的溢出频率值，并输出溢出频率值; 振荡判断电路（7），判断“ 调制器（13）基于溢出频率值处于振荡状态; 以及抑制“Dgr”的振荡的振荡停止电路。调制器（13）当振荡判断电路（7）判断为＆Dgr＆调制器处于振荡状态; 其中，通过获得积分器的输出外部的频率，确定积分器的输出是否由于噪声等而暂时超出正常范围，或积分器的输出由于振荡而在正常范围之外正常范围和振荡的＆Dgr＆调制器（13）只有在振荡时被抑制。

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