Talk:Digital-to-analog converter/Archive 1

Archive 1

Intial discussion

Why are switching capacitor style DACs such as those implemented for VGA and TV signal generation left out? This article seems to concentrate entirely on DACs for the purpose of audio signal generation.

DACs are used in analogue signal processing circuits to replace potentiometers

I know what the writer is getting at, but these circuit elements are not really DACs, they are digitally controlled potentiometers ;-) In other words they do not create an analogue signal from a digital one, asa DAC does, but controls a purely analogue signal under digital control. Such devices are interesting and deserve an article, but they do not belong under DAC. Graham 05:50, 31 August 2005 (UTC)

I've now made a start on this article based on the text copied from here. Graham 06:00, 31 August 2005 (UTC)

I miss a history section..

Could someone with knowledge write one? Electron9 01:10, 3 November 2007 (UTC)

The fact that practical DACs output a sequence of piecewise constant values or rectangular pulses

Rectangular pulse output was used to avoid the sinc roll-off of zero-order hold circuits. That is, rectangular pulse was used as an approximation of a dirac pulse. See for example this discussion: [1] So the use of the term "rectangular pulse" in the context of Nyquest-rate zero-order hold circuits is confusing: rectangular pulse DAC circuits are not Nyquest-rate zero-order hold circuits.150.101.166.15 (talk) 08:36, 30 November 2007 (UTC)

ring DAC

Dear fellow Wikipedians,

Is the "ring DAC" [2] significant enough to mention in this article? Or is it merely a minor variation of the "thermometer coded DAC" combined with a "oversampling DAC"? --68.0.124.33 (talk) 04:24, 2 July 2008 (UTC)

Modem

The following discussion is closed and will soon be archived.

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There is an obvious problem on Modem that most people think a Modem converts digital signals to analog signals. The modem article is already too long to include a tutorial on the difference between analog and digital signals, and there isn't any good place to reference -- so any suggestions would be welcome.203.206.162.148 (talk) 08:05, 8 September 2010 (UTC)

You say "there is an obvious problem" but it is far from clear what you think the problem is. It is also unclear why you are posting on this page, which is for discussion improvements to the D/A article. Why are you not discussion this at Talk:Modem which is the "obvious" place to get the Modem article improved. SpinningSpark 14:56, 8 September 2010 (UTC)

Superfluous section?

The following discussion is closed and will soon be archived.

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Is the section "Some vocabulary" really needed? --Mortense (talk) 15:15, 3 December 2010 (UTC)

No. Binksternet (talk) 17:33, 3 December 2010 (UTC)