TW200713850A - Sigma-delta modulator, D/A conversion system and dynamic element matching method - Google Patents

Sigma-delta modulator, D/A conversion system and dynamic element matching method

Info

Publication number
TW200713850A
TW200713850A TW094133739A TW94133739A TW200713850A TW 200713850 A TW200713850 A TW 200713850A TW 094133739 A TW094133739 A TW 094133739A TW 94133739 A TW94133739 A TW 94133739A TW 200713850 A TW200713850 A TW 200713850A
Authority
TW
Taiwan
Prior art keywords
elements
sigma
delta modulator
dynamic element
groups
Prior art date
Application number
TW094133739A
Other languages
Chinese (zh)
Other versions
TWI301705B (en
Inventor
Ke-Yan Shih
Original Assignee
Faraday Tech Corp
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 Faraday Tech Corp filed Critical Faraday Tech Corp
Priority to TW94133739A priority Critical patent/TWI301705B/en
Publication of TW200713850A publication Critical patent/TW200713850A/en
Application granted granted Critical
Publication of TWI301705B publication Critical patent/TWI301705B/en

Links

Abstract

A sigma-delta modulator. The sigma-delta modulator comprises a summer, a loop filter, a quantizer, a D/A converter and a dynamic element matching logic. The summer receives an analog input signal and a feedback signal to generate an error signal to the loop filter which generates a filtered signal to the quantizer, thereby converting the filtered signal to a quantized output signal to the D/A converter including D/A elements and generating the feedback signal corresponding to selected D/A elements thereof. The dynamic element matching logic coupled between the quantizer and D/A converter selects the D/A elements of the D/A converter, wherein it divides the D/A elements into groups, where the number of the groups is prime to that of the D/A elements, and then selects the groups and D/A elements thereof according to the quantized output signal and the previous selection of groups and D/A elements.
TW94133739A 2005-09-28 2005-09-28 Sigma-delta modulator, d/a conversion system and dynamic element matching method TWI301705B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW94133739A TWI301705B (en) 2005-09-28 2005-09-28 Sigma-delta modulator, d/a conversion system and dynamic element matching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW94133739A TWI301705B (en) 2005-09-28 2005-09-28 Sigma-delta modulator, d/a conversion system and dynamic element matching method

Publications (2)

Publication Number Publication Date
TW200713850A true TW200713850A (en) 2007-04-01
TWI301705B TWI301705B (en) 2008-10-01

Family

ID=45070308

Family Applications (1)

Application Number Title Priority Date Filing Date
TW94133739A TWI301705B (en) 2005-09-28 2005-09-28 Sigma-delta modulator, d/a conversion system and dynamic element matching method

Country Status (1)

Country Link
TW (1) TWI301705B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI381654B (en) * 2009-05-04 2013-01-01
TWI392240B (en) * 2008-09-01 2013-04-01 Mediatek Inc Continuous-time sigma-delta modulator using dynamic element matching having low latency and dynamic element matching method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI392240B (en) * 2008-09-01 2013-04-01 Mediatek Inc Continuous-time sigma-delta modulator using dynamic element matching having low latency and dynamic element matching method thereof
TWI381654B (en) * 2009-05-04 2013-01-01

Also Published As

Publication number Publication date
TWI301705B (en) 2008-10-01

Similar Documents

Publication Publication Date Title
CN102165697B (en) Method and apparatus for dithering in multi-bit sigma-delta analog-to-digital converters
CN105264777B (en) System and method for the compression digital signal in digital microphone system
EP2421156A3 (en) Low power high dynamic range sigma-delta modulator
WO2003043199A3 (en) Optically sampled delta-sigma modulator
TW200709542A (en) Control circuit of DC-DC converter and its control method
JP2012519415A5 (en)
TW200623655A (en) Digital delta sigma modulator and applications thereof
WO2010076272A3 (en) Digital to analogue converter
DE602007002302D1 (en) DIGITAL SIGMA DELTA MODULATORS
WO2008150972A3 (en) Pulse-code to pulse width modulation signal conversion with continuously variable ratio between clock and sampling frequencies and applications hereof
ATE359623T1 (en) DIGITAL TO ANALOG CONVERTER WITH SIGMA-DELTA LOOP AND FEEDBACK DAW MODEL
CA2476967A1 (en) A system and method for adaptive sigma-delta modulation
WO2007126614A3 (en) No-missing-code analog to digital converter system and method
EP1193880A3 (en) A subranging sigma delta modulator
JP2004248288A5 (en)
TW200713795A (en) A method for modulating phase or frequency in a communication system using clock division
TW200713850A (en) Sigma-delta modulator, D/A conversion system and dynamic element matching method
CN101562454B (en) D/A conversion system with matched dynamic elements and integrating triangular modulating device
WO2008032046A3 (en) A random number generator
DE60312512D1 (en) ANALOG-DIGITAL SIGMA-DELTA CONVERTER WITH PSEUDO PARALLEL TRANSFORMER
JP2018516518A5 (en)
US9929738B2 (en) Spectrally shaped random signal
CN100502234C (en) Device and method for digital pulsewidth modulation
KR101117017B1 (en) Amplifier in which a digital signal is used as an input signal
CN1878000B (en) Digital-to-analog converter