Title:
ADAPTIVE DIGITAL QUANTIZATION NOISE CANCELLATION FILTER FOR MASH ADC
Document Type and Number:
Japanese Patent JP2017118493
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for quantization noise cancellation in a continuous-time multi-stage noise shaping analog-to-digital converter (CT MASH ADC).SOLUTION: Digital quantization noise cancellation filters adaptively track transfer function variations due to integrator gain errors, flash-to-DAC timing errors, as well as the inter-stage gain and timing errors. Tracking transfer functions is performed through the direct cross-correlation between an injected maximum length linear feedback shift register (LFSR) sequence and modulator outputs, and then these non-ideal effects are corrected by accurately modeling the transfer functions with programmable finite impulse response (PFIR) filters.SELECTED DRAWING: None
Inventors:
MENG QINGDONG
SHIBATA HAJIME
RICHARD E SCHREIER
MARTIN STEVEN MCCORMICK
DONG YUNZHI
JOSE BARREIRO SILVA
ZHAO JIALIN
DONALD W PATERSON
WENHUA W YANG
SHIBATA HAJIME
RICHARD E SCHREIER
MARTIN STEVEN MCCORMICK
DONG YUNZHI
JOSE BARREIRO SILVA
ZHAO JIALIN
DONALD W PATERSON
WENHUA W YANG
Application Number:
JP2016244589A
Publication Date:
June 29, 2017
Filing Date:
December 16, 2016
Export Citation:
Assignee:
ANALOG DEVICES GLOBAL
International Classes:
H03H21/00; H03M3/02
Domestic Patent References:
| JP2014533469A | 2014-12-11 | |||
| JP2003515803A | 2003-05-07 | |||
| JP2008518542A | 2008-05-29 | |||
| JP2008109671A | 2008-05-08 | |||
| JPH06252699A | 1994-09-09 | |||
| JPH06266373A | 1994-09-22 | |||
| JP2002156439A | 2002-05-31 | |||
| JP2007533180A | 2007-11-15 | |||
| JPH05160736A | 1993-06-25 |
Foreign References:
| US20150288379A1 | 2015-10-08 |
Attorney, Agent or Firm:
Kiyoji Kuzuwa
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