R2R DA

R2R:

https://www.tek.com/blog/tutorial-digital-analog-conversion-–-r-2r-dac
http://embeddednewbie.blogspot.com.br/2011/02/review-of-arduino-dac-solutions.html
http://download.mikroe.com/documents/add-on-boards/other/mixed-signal/r2r-dac/r2r-dac-manual-v100.pdf
https://www.allaboutcircuits.com/textbook/digital/chpt-13/r-2r-dac/
http://ikalogic.cluster006.ovh.net/8-bit-digital-to-analog-converter-dac/    @@@
https://www.planetanalog.com/author.asp?section_id=3062&doc_id=563580
http://www.skillbank.co.uk/SignalConversion/dac.htm
https://www.engr.usask.ca/classes/EE/331/pastexams/Past%20Projects/2008/Digital%20to%20Analog%20Converter.html
http://www.eng.utah.edu/~bowen/DAC_Proj/8-bit_r2rdac_current_sources.html
https://www.paulotrentin.com.br/eletronica/conversor-dac-atraves-da-rede-de-escada-r2r/    @@@PT- BR
https://www2.pcs.usp.br/~labdig/pdffiles_2009/2498-convDA-2005.pdf
http://www.ufjf.br/fabricio_campos/files/2011/03/cap11_parte_2.pdf
http://www.din.uem.br/sica/material/adda/adda.html
http://www.dsif.fee.unicamp.br/~fabiano/EE640/PDF/Conversores%20A_D%20e%20D_A.pdf   @@@@
http://adestradordebit.blogspot.com.br/2014/07/conversor-da-por-rede-r-2r.html
https://pt.wikipedia.org/wiki/Conversor_digital-analógico
https://www.google.com.br/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwiyzLzroNrWAhUEDpAKHX1YA94QFggwMAE&url=http%3A%2F%2Fpaginapessoal.utfpr.edu.br%2Frosangela%2Flcd-e-adc%2FDig2Cap4-Conversor%2520DA%2520e%2520AD.doc%2Fat_download%2Ffile&usg=AOvVaw1Vqq2NI6U_UVo4kL12VFhI
http://www.eletrica.ufpr.br/marcelo/TE072/022007/Thomas-GSM.pdf
http://www.mspc.eng.br/eledig/eldg2110.shtml
https://en.wikipedia.org/wiki/Resistor_ladder
http://www.ti.com/lit/ds/symlink/tlc5615.pdf    ----
http://www.microchip.com/forums/m612830.aspx    ----
http://www.instructables.com/id/Homemade-DAC-AD-Converter/
http://www.circuitstoday.com/digital-to-analog-converters-da
http://areeweb.polito.it/didattica/corsiddc/01NWM/Material/TLCELabADAC.pdf
http://areeweb.polito.it/didattica/corsiddc/01NVD/MatdidNew/ATLCELabDADC.pdf
https://en.wikipedia.org/wiki/Analog-to-digital_converter
https://www.pc-control.co.uk/atod_types.htm