digital to analogue audio converter ic?

Question

ok so im getting better at programming, i managed to write a register level code to control an lcd and it works well. My next challenge is to write a register level code to read data from an sd card, learn about the structure of jpeg and mp3 files, and build an mp3 player using an atmega micro-controller which im pretty good at programming, the mp3 player will have a basic user interface i will write the code for and display the song name on a small lcd and options, however im looking for a suitable digital to analogue converter chip i can easily build into the circuit so it either needs to be sold as a project board or in a dil package and i want this chip to take 8 or 16 bit digital data to produce an audio output, i know i could use the analogue output from the atmega but i thought perhaps using an ic to do this designed for the purpose might be a better choice for first mp3 player. I know i will still need to learn about the details of an mp3 file and i look forward to this. Any thoughts on this? what chips would you recommend. Also i wish to understand jpeg and using a tft display thats already connected to a graphics controller, i wish to read jpeg files from an st card process the data such as shrink the picture data to the size required to fit the display then bus it to the display. I will use a nand flash memory for storing the data temporarily as i process it of course. Any input on this is welcome any advice on going about doing this.

Answer 1

My mistake



Well you can use AD1866 dual 16-bit audio DAC it supports two audio channels.



The DAC’s analog output is too weak to drive a loudspeaker or headphones on its own.



It must be passed through an amplifier that can supply enough current and power to make audible sound.



LM4862 Boomer 675mW audio power amplifier can be used.

Answer 2

Well done to Abbas Murad for getting the most fundamental part wrong - DAC not ADC.



One thing to note from the start is that you won't be able to get a DAC that can produce a useable audio signal - you're going to need some kind of headphone amplifier if you wan't to actually listen to it !



There are a whole host of DIP Digital-to-Analogue converters available from places like CPC/Farnell, DigiKey, etc. All are FAIRLY straightforward, but they are much more expensive than their surface-mount counterparts, and some require more work than you need. If you want a STEREO convertor, things just get annoying. Plus, you're still going to need an audio amplifier at the end.



To be quite honest, you'd be better off using the on-chip DAC if you have one.



The best thing to do is search online for "headphone amplifier kit" - you get a list of simple, single-rail supply circuits designed for this sort of thing. You're going to need some electronics knowledge, not just programming nouse. You should be able to plumb this straight in to the ATmega's DAC...

Answer 3

i'm unsure I understand your question. A converter field with analog bypass by using will enable analog Over The Air indicators to bypass interior the process the field with out disconnecting it and could decode over the air digital television. The containers * won't * paintings with cable. So, in case you prefer to bypass cable interior the process the field, it probable could paintings, yet then the field does not see over the air and could be ineffective. if your television has Audio/Video inputs, you ought to connect the converter field to the television with those. Then connect cable to the television's "antenna in" connector. of course, you may wish an antenna linked to the converter field. then you definitely ought to swap between cable and over the air with the help of adjusting inputs on your television. added answer: The converter containers * won't * paintings with cable. Cable and Over The Air use 2 diverse structures. Cable could require a television that should track cable right now or a cable company field. The field won't track analog something, it is going to easily enable it "stay by using" to the tuner interior the television / DVD recorder, etc.