GB0611810D0 - ADC filter - Google Patents

ADC filter

Info

Publication number
GB0611810D0
GB0611810D0 GBGB0611810.3A GB0611810A GB0611810D0 GB 0611810 D0 GB0611810 D0 GB 0611810D0 GB 0611810 A GB0611810 A GB 0611810A GB 0611810 D0 GB0611810 D0 GB 0611810D0
Authority
GB
United Kingdom
Prior art keywords
filter
receive
decimation
clock
fir
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GBGB0611810.3A
Other versions
GB2439115A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens PLC
Original Assignee
Siemens PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens PLC filed Critical Siemens PLC
Priority to GB0611810A priority Critical patent/GB2439115A/en
Publication of GB0611810D0 publication Critical patent/GB0611810D0/en
Publication of GB2439115A publication Critical patent/GB2439115A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0282—Sinc or gaussian filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0283—Filters characterised by the filter structure
    • H03H17/0286—Combinations of filter structures
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0283—Filters characterised by the filter structure
    • H03H17/0286—Combinations of filter structures
    • H03H17/0288—Recursive, non-recursive, ladder, lattice structures
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0664—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is lower than the input sampling frequency, i.e. decimation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/02—Delta modulation, i.e. one-bit differential modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/462—Details relating to the decimation process
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/456—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a first order loop filter in the feedforward path

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A decimation filter for use with a delta-sigma analogue-to-digital converter comprises a finite impulse response (FIR) filter and a first-order sinc filter. The sinc filter comprises a counter adapted to receive an input clock and a decimation clock as well as input data, a latch adapted to receive the decimation clock and the input data following passage through the FIR filter, an adder/subtractor adapted to receive the output from the latch as well as the outputs from the counter and the FIR filter, and a register adapted to receive the output from the adder/subtractor and the decimation clock.
GB0611810A 2006-06-15 2006-06-15 ADC filter Withdrawn GB2439115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0611810A GB2439115A (en) 2006-06-15 2006-06-15 ADC filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0611810A GB2439115A (en) 2006-06-15 2006-06-15 ADC filter

Publications (2)

Publication Number Publication Date
GB0611810D0 true GB0611810D0 (en) 2006-07-26
GB2439115A GB2439115A (en) 2007-12-19

Family

ID=36775659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0611810A Withdrawn GB2439115A (en) 2006-06-15 2006-06-15 ADC filter

Country Status (1)

Country Link
GB (1) GB2439115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117544133A (en) * 2024-01-08 2024-02-09 赛卓电子科技(上海)股份有限公司 Digital filtering method applied to low-speed delta-sigma ADC, digital filter and delta-sigma ADC

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108156401B (en) * 2017-12-19 2020-07-28 重庆湃芯创智微电子有限公司 Low power consumption compact digital decimation filter for CMOS image sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592165A (en) * 1995-08-15 1997-01-07 Sigmatel, Inc. Method and apparatus for an oversampled digital to analog convertor
JP3327114B2 (en) * 1996-04-24 2002-09-24 ソニー株式会社 Signal processing device, signal recording device, and signal reproducing device
US6321246B1 (en) * 1998-09-16 2001-11-20 Cirrus Logic, Inc. Linear phase FIR sinc filter with multiplexing
US6369634B1 (en) * 2000-01-15 2002-04-09 Cirrus Logic, Inc. Delay systems and methods using a variable delay sinc filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117544133A (en) * 2024-01-08 2024-02-09 赛卓电子科技(上海)股份有限公司 Digital filtering method applied to low-speed delta-sigma ADC, digital filter and delta-sigma ADC
CN117544133B (en) * 2024-01-08 2024-03-26 赛卓电子科技(上海)股份有限公司 Digital filtering method applied to low-speed delta-sigma ADC, digital filter and delta-sigma ADC

Also Published As

Publication number Publication date
GB2439115A (en) 2007-12-19

Similar Documents

Publication Publication Date Title
TW200705830A (en) Third order sigma-delta modulator
TW200721701A (en) Low-pass filter based delta-sigma modulator
EP2541345A3 (en) Time difference adders, time difference accumulators, sigma-delta time-to-digital converters, digital phase locked loops and temperature sensors
EP2779464A3 (en) Continuous-time oversampling pipeline analog-to-digital converter
EP2353079A4 (en) File input/output scheduler using immediate data chunking
GB2421377B (en) Signal Processing System Having an ADC Delta-Sigma Modulator with Single-Ended Input and Feedback Signal Inputs
WO2007002647A3 (en) Managing metadata for graph-based computations
JP2007503659A5 (en)
WO2009090496A3 (en) Analog-to-digital converter timing circuits
EP2273682A4 (en) Integrator, resonator, and oversampling a/d converter
ATE522980T1 (en) SIGMA DELTA MODULATION WITH OFFSET
HK1117901A1 (en) Single input, multiple output flow meter
WO2010036601A3 (en) Sigma-delta converter noise cancellation
GB0814815D0 (en) Disambiguation of compound text input with limitation of data sources
EP2033323A4 (en) Multiple input multiple output signal receiving apparatus with optimized performance
GB0817575D0 (en) An asynchronous delta-sigma modulator and a method for the delta-sigma modulation of an input signal
WO2010090675A3 (en) Extensibility for web based diagram visualization
GB0611810D0 (en) ADC filter
TW200742274A (en) Sigma-delta modulator
TW200701138A (en) Interpolation process circuit
WO2010148259A3 (en) Combinatorial circuit with shorter delay when inputs arrive sequantially and delta sigma modulator using the combinatorial circuit
Strohmer et al. Fast reconstruction algorithms for periodic nonuniform sampling with applications to time-interleaved ADCs
GB2481737A (en) Performing multiplication using an analog-to-digital converter
WO2008102091A3 (en) Method for processing a digital signal in a digital delta-sigma modulator, and digital delta-sigma modulator therefor
ITBS20080185A1 (en) ARITHMETIC-LOGIC UNIT FOR PROCESSOR OF DIGITAL SIGNALS

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)