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1. 发明申请

US20090102688A1 MULTISTAGE ANALOG/DIGITAL CONVERTER AND METHOD FOR CALIBRATING SAID CONVERTER 有权
标题翻译：多模式模拟/数字转换器和校准转换器的方法
公开(公告)号：US20090102688A1
公开(公告)日：2009-04-23
申请号：US12198709
申请日：2008-08-26
申请人： Giovanni Antonio Cesura , Roberto Giampiero Massolini
发明人： Giovanni Antonio Cesura , Roberto Giampiero Massolini
IPC分类号： H03M1/10 , H03M1/12 , H03M1/00
CPC分类号： H03M1/1061 , H03M1/1004 , H03M1/162 , H03M1/164 , H03M1/40 , H03M1/44
摘要： A multistage analog/digital converter for converting in multi-step cycles an input signal into respective digital codes, each cycle step resolving at least one bit of a respective digital code. The converter includes: a sampling circuit inputting the signal and outputting a first sequence of analog samples; a generation block of a pseudorandom sequence of samples; a summing node, such as to input the first sequence and the pseudorandom sequence, obtaining in output a second sequence of analog samples including non-pseudorandom samples; a converter having a controllable digital gain receiving the second sequence and outputting bits of the digital codes; a feedback loop with a loop gain and including an analog amplifier; a digital calibration block to match the digital gain to the loop gain and including a prediction block to produce a digital estimation of said input signal starting from the bits resulting from converting the non-pseudorandom samples.
摘要翻译：一种用于以多步循环将输入信号转换成相应数字代码的多级模拟/数字转换器，每个循环步骤分辨相应数字代码的至少一位。转换器包括：采样电路，输入信号并输出第一序列模拟样本; 伪随机序列样本的生成块; 求和节点，诸如输入第一序列和伪随机序列，在输出中获得包括非伪随机样本的模拟样本的第二序列; 转换器，其具有可控数字增益，接收第二序列并输出数字码的位; 具有环路增益并包括模拟放大器的反馈回路; 数字校准块，用于将数字增益与环路增益相匹配，并包括预测块，以从转换非伪随机采样得到的位开始产生所述输入信号的数字估计。

2. 发明授权

US07671769B2 Multistage analog/digital converter and method for calibrating said converter 有权
标题翻译：多级模拟/数字转换器和校准所述转换器的方法
公开(公告)号：US07671769B2
公开(公告)日：2010-03-02
申请号：US12198709
申请日：2008-08-26
申请人： Giovanni Antonio Cesura , Roberto Giampiero Massolini
发明人： Giovanni Antonio Cesura , Roberto Giampiero Massolini
IPC分类号： H03M1/06
CPC分类号： H03M1/1061 , H03M1/1004 , H03M1/162 , H03M1/164 , H03M1/40 , H03M1/44
摘要： A multistage analog/digital converter for converting in multi-step cycles an input signal into respective digital codes, each cycle step resolving at least one bit of a respective digital code. The converter includes: a sampling circuit inputting the signal and outputting a first sequence of analog samples; a generation block of a pseudorandom sequence of samples; a summing node, such as to input the first sequence and the pseudorandom sequence, obtaining in output a second sequence of analog samples including non-pseudorandom samples; a converter having a controllable digital gain receiving the second sequence and outputting bits of the digital codes; a feedback loop with a loop gain and including an analog amplifier; a digital calibration block to match the digital gain to the loop gain and including a prediction block to produce a digital estimation of said input signal starting from the bits resulting from converting the non-pseudorandom samples.
摘要翻译：一种用于以多步循环将输入信号转换成相应数字代码的多级模拟/数字转换器，每个循环步骤分辨相应数字代码的至少一位。转换器包括：采样电路，输入信号并输出第一序列模拟样本; 伪随机序列样本的生成块; 求和节点，诸如输入第一序列和伪随机序列，在输出中获得包括非伪随机样本的模拟样本的第二序列; 转换器，其具有可控数字增益，接收第二序列并输出数字码的位; 具有环路增益并包括模拟放大器的反馈回路; 数字校准块，用于将数字增益与环路增益相匹配，并包括预测块，以从转换非伪随机采样得到的位开始产生所述输入信号的数字估计。

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