Author Topic: DAC (Digital-Audio-Converter)  (Read 21503 times)

Link

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DAC (Digital-Audio-Converter)
« on: April 13, 2010, 12:18:38 PM »
Digital-Analog-Umsetzer
Ein Digital-Analog-Umsetzer (DAU, engl. digital-to-analog converter (DAC)), auch Digital-Analog-Wandler  oder D/A-Wandler genannt, wird verwendet, um quantisierte  digitale Signale oder einzelne Werte in analoge Signale umzusetzen. Quelle der Signale sind dabei der Analog-Digital-Umsetzer und/oder digitale Information oder Berechnung. In der Regel wird der DAU als Integrierter Schaltkreis (IC) ausgeführt.
http://de.wikipedia.org/wiki/Digital-Analog-Umsetzer

Digitaltechnik II 8 Digital-Analog-Umsetzer Seite 8 - 1
Prof. Dr. -Ing. G. Biethan Fassung 1.03 vom 01.10.2003
Lernziele: In diesem Kapitel werden Digital-Analog-Umsetzer behandelt. Sie erfahren die wichtigsten
technischen Merkmale und die elektronischen Grundschaltungen dieser Umsetzer. Einsatzbereiche
sowie wichtige Anwendungen werden vorgestellt.
http://www.fh-friedberg.de/fachbereiche/e2/digital-labor/Unterlagen/DT_Script/DT2SCKA8.pdf

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The Analog Devices AD7541A is a low cost, high performance
12-bit monolithic multiplying digital-to-analog converter. It is
fabricated using advanced, low noise, thin film on CMOS
technology and is available in a standard 18-lead DIP and in
20-terminal surface mount packages.
http://www.analog.com/static/imported-files/Data_Sheets/AD7541A.pdf

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The CS8411/12 are monolithic CMOS circuits that
receive and decode audio and digital data according
to the AES/EBU, IEC958, S/PDIF, and EIAJ
CP-340 interface standards.
http://www.datasheetcatalog.org/datasheets/700/158850_DS.pdf

http://www.jogis-roehrenbude.de/Leserbriefe/CD-Player-Projekt/DAC-Schaltung.gif

http://www.jogis-roehrenbude.de/Leserbriefe/CD-Player-Projekt/

Kontext:
Selbstbau-Gemeinschaftsprojekt : CD-Player mit Röhren - CD-Filter und Röhrenausgangsstufe.
http://www.jogis-roehrenbude.de/Leserbriefe/CD-Player-Projekt/CD.htm


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DAC (Digital-Audio-Converter)
« Reply #1 on: April 13, 2010, 01:00:15 PM »
Non-oversampling - Digital filter-less DAC Concept
by Ryohei Kusunoki
http://www.sakurasystems.com/articles/Kusunoki.html


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DAC (Digital-Audio-Converter)
« Reply #2 on: April 13, 2010, 01:02:14 PM »
Convertus Decima Digital
Few weeks ago I published the results of my studies and tests reguarding the usage of decimation in a zero-oversampling DAC. Unfortunately I had not yet been able, at the time, to find a digital process that could obtain decimation in an easy way, while protecting the audio signal from any contamination.
Just after a few days from the publication I was studying how to connect another DAC chip to a CS8412, and all of a sudden I found out what I had not been able to understand for a couple of years - the easy way to decimation.
http://www.tnt-audio.com/clinica/convertusdecdig_e.html



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DAC (Digital-Audio-Converter)
« Reply #3 on: April 13, 2010, 01:08:18 PM »
DAC End
by Andrea Ciuffoli - starting in the 2008

INTRODUCTION
After many time lost to explore the DAC world from the DAC 1.0 to the DAC Final I have found the end of this way.
The No Oversampling DAC give a more natural sound but if you ear the TDA1541 and TDA1543 seem to lose details.
The AD1865N-K with passive I/V give a perfect combination, natural sound and all the details.
So this project is the end of my DAC projects also if someone speak very well about the AD1862.
The AD1865N-K give the better performances with a 200ohm MK132 Caddock as passive I/V.
In this configuration the output signal is too low to drive any amplifier so I have design for the AD1865N-K the better output stage.
This DAC use a single ended vaccum tube amplifier with output transformer and no interstage capacitors.
To get the max sonic performances has been used the new amorphous C-core by Lundahl.
I have tested other output stages like the LL7903 used as voltage amplifier or as I/V conv. but the results was bad if compared to this.
http://www.audiodesignguide.com/DacEnd/index.html


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DAC's...
« Reply #4 on: January 23, 2013, 03:08:21 PM »
8-Bit DAC with Output Amplifiers
http://www.analog.com/static/imported-files/data_sheets/AD7224.pdf

8-Bit Buffered Multiplying DAC
http://www2.informatik.hu-berlin.de/~hochmuth/bvp/ad7524.pdf

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Audio and waveform generation using the DAC
in STM32 microcontroller families
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/CD00259245.pdf

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I thought it would be nice to have some audio output a little more sophisticated than a simple 1-bit software-toggled speaker. An R/2R network would typically need 8 output bits for phone-quality audio, 16 or more for CD quality. PWM outputs use just one bit, but this has to be clocked at 256 or 65536 times the audio sampling rate for 8 or 16 bit resolution. ...
http://members.casema.nl/hhaydn/howel/logic/audio_dac.htm

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Breakout Board for AD5330 Parallel 8-Bit DAC
https://www.sparkfun.com/products/9719

Playing WAV Files with a DAC
by zagGrad | March 22, 2010
https://www.sparkfun.com/tutorials/160

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DAC0808 8-Bit D/A Converter
http://www.ti.com/lit/ds/symlink/dac0808.pdf

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8/10/12-Bit Voltage Output Digital-to-Analog Converter
with Internal VREF and SPI Interface
http://docs-europe.electrocomponents.com/webdocs/0f4b/0900766b80f4b123.pdf


MCP 4821-E/P
http://www.segor.de/#Q=MCP%25204821-E%252FP&M=1


DAC121C081/ DAC121C085 12-Bit Micro Power Digital-to-Analog Converter with an I2CCompatible Interface
http://www.ti.com/lit/ds/snas395c/snas395c.pdf

Quad, 16-BIT DAC with I2C Interface
Posted Jul 30th 2012
http://www.eeweb.com/news/quad-16-bit-dac-with-i2c-interface/

Breakout Board for MCP4725 I2C DAC
12-bit resolution
I2C Interface (Standard, Fast, and High-Speed supported)
Small package
2.7V to 5.5V supply
Internal EEPROM to store settings
https://www.sparkfun.com/products/8736

I2C DAC
http://www.watterott.com/de/MCP4725-Breakout-Board-12-Bit-DAC-w/I2C-Interface


Breakout Board mit dem MCP4725 I2C DAC
http://www.watterott.com/de/Breakout-Board-for-MCP4725-I2C-DAC


https://dlnmh9ip6v2uc.cloudfront.net/datasheets/BreakoutBoards/MCP4725_v12.pdf


http://www.electroons.com/blog/2013/02/interfacing-mcp4725-12-bit-dac-with-avr-microcontroller-avrprayog/

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IC DAC 12Bit mit I2C-Interface
Anzahl der D/A-Wandlerkanäle 4
http://de.rs-online.com/web/p/d-a-wandler/6878736P/

http://docs-europe.electrocomponents.com/webdocs/0db5/0900766b80db5ee7.pdf
« Last Edit: June 11, 2013, 12:34:58 PM by lemonhorse »

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« Last Edit: June 12, 2014, 04:05:40 PM by Link »