ADC quantizer question.
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From: m26k9 on 9 Oct 2009 02:33 Hello, I am looking for some facts or specifications about an ADC quantizer. Firstly I want to know if it possible for quantizers to dynamically change their resolution? or is it fixed for a quantizer. If the quantizer can actually change its resolution, I would be very grateful if somebody could direct me to a site or a article about this mechanism. Specifically; 1) The connection between resolution and sampling rate 2) Resolution and power consumption. Any wisdom or reference is greatly appreciated. Thank you.
From: Mikolaj on 9 Oct 2009 04:07 On 09-10-2009 at 08:33:39 m26k9 <maduranga.liyanage(a)gmail.com> wrote: > Hello, > > I am looking for some facts or specifications about an ADC quantizer. > Firstly I want to know if it possible for quantizers to dynamically > change > their resolution? or is it fixed for a quantizer. My first thought was oversampling, shortly it is changing resolution within increasing sampling rate (and there is a strict formula on that) Very, very good tutorial is here: http://www.lr.ttu.ee/irm/sideseadmete_mudeldamine/AD_MT_Tutorial.pdf -- Mikolaj
From: m26k9 on 9 Oct 2009 11:06 Dear Mikolaj. Thank you very much. It is indeed an excellent tutorial. Has lot more contents than the textbook I was using. Thank you again.
From: Eric Jacobsen on 9 Oct 2009 11:44 On 10/9/2009 1:07 AM, Mikolaj wrote: > On 09-10-2009 at 08:33:39 m26k9 <maduranga.liyanage(a)gmail.com> wrote: > >> Hello, >> >> I am looking for some facts or specifications about an ADC quantizer. >> Firstly I want to know if it possible for quantizers to dynamically >> change >> their resolution? or is it fixed for a quantizer. > > My first thought was oversampling, > shortly it is changing resolution within increasing sampling rate > (and there is a strict formula on that) > > Very, very good tutorial is here: > http://www.lr.ttu.ee/irm/sideseadmete_mudeldamine/AD_MT_Tutorial.pdf > I don't know who Walt Kester is, but I'm a fan! That's an excellent reference for all things having to do with ADC/DAC technology and issues. -- Eric Jacobsen Minister of Algorithms Abineau Communications http://www.abineau.com
From: Randy Yates on 9 Oct 2009 13:03
Eric Jacobsen <eric.jacobsen(a)ieee.org> writes: > On 10/9/2009 1:07 AM, Mikolaj wrote: >> On 09-10-2009 at 08:33:39 m26k9 <maduranga.liyanage(a)gmail.com> wrote: >> >>> Hello, >>> >>> I am looking for some facts or specifications about an ADC quantizer. >>> Firstly I want to know if it possible for quantizers to dynamically >>> change >>> their resolution? or is it fixed for a quantizer. >> >> My first thought was oversampling, >> shortly it is changing resolution within increasing sampling rate >> (and there is a strict formula on that) >> >> Very, very good tutorial is here: >> http://www.lr.ttu.ee/irm/sideseadmete_mudeldamine/AD_MT_Tutorial.pdf >> > > I don't know who Walt Kester is, but I'm a fan! > > That's an excellent reference for all things having to do with ADC/DAC > technology and issues. It *is* a very nice reference. He looks like he was (or is) an Analog Devices engineer - probably the type that writes their application notes. I guess these *are* application notes? -- Randy Yates % "Bird, on the wing, Digital Signal Labs % goes floating by mailto://yates(a)ieee.org % but there's a teardrop in his eye..." http://www.digitalsignallabs.com % 'One Summer Dream', *Face The Music*, ELO |