发明名称 |
MULTISTAGE ANALOG/DIGITAL CONVERTER AND METHOD FOR CALIBRATING SAID CONVERTER |
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.
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申请公布号 |
US2009102688(A1) |
申请公布日期 |
2009.04.23 |
申请号 |
US20080198709 |
申请日期 |
2008.08.26 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
CESURA GIOVANNI ANTONIO;MASSOLINI ROBERTO GIAMPIERO |
分类号 |
H03M1/10;H03M1/00;H03M1/12 |
主分类号 |
H03M1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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