I have been looking for a 16 Bit analogue to digital circuit to build. But I just can't find anything anywhere that I can copy or modify. I have seen some cheap A to D converters on ebay, and I bought a few to see which chip they used. But each one of them has the detail on the chip scraped off. So I am no further than when I started.
I want to try to build an ADC to connect my cassette player to my DAC. So I am asking the DIYAudio community out there is anyone has a starting point for me, or even an idea of the chip in those cheap ebay ADC.
I want to try to build an ADC to connect my cassette player to my DAC. So I am asking the DIYAudio community out there is anyone has a starting point for me, or even an idea of the chip in those cheap ebay ADC.
In my opinion, you should search for, for example, the used minidisc sony MDS JE-500. In addition to DAC, it has ADC functions. MD Community Page: Sony MDS-JE500/S37
I have quite a few ADC units, but I am after building my own. That would be far more satisfying, and would allow me to tamper with parameters etc.
If your DAC has a raw DSD input, you could try the circuit of post 9 of this thread:
Very basic DSD ADC made with op-amps and logic gates
It is not a very good ADC, but at least it gives you plenty of opportunity to tamper with things. By the way, I never got the USB interface to work.
Very basic DSD ADC made with op-amps and logic gates
It is not a very good ADC, but at least it gives you plenty of opportunity to tamper with things. By the way, I never got the USB interface to work.
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By the way, Trenz Electronic sells cheap audio converter boards from Digilent and they have the converter type numbers on their website:
Pmod I2S2: Stereo Audio Input and Output | Peripheral Modules | Digilent | Products | Trenz Electronic GmbH Online Shop (EN)
"The Digilent Pmod I2S2 features a Cirrus CS5343 Multi-Bit Audio A/D Converter and a Cirrus CS4344 Stereo D/A Converter, each connected to 3.5mm Audio Jacks. These circuits allow a system board to transmit and receive stereo audio signals via the I2S protocol. The Pmod I2S2 supports 24-bit resolution per channel at input sample rates up to 108KHz."
Pmod I2S2: Stereo Audio Input and Output | Peripheral Modules | Digilent | Products | Trenz Electronic GmbH Online Shop (EN)
"The Digilent Pmod I2S2 features a Cirrus CS5343 Multi-Bit Audio A/D Converter and a Cirrus CS4344 Stereo D/A Converter, each connected to 3.5mm Audio Jacks. These circuits allow a system board to transmit and receive stereo audio signals via the I2S protocol. The Pmod I2S2 supports 24-bit resolution per channel at input sample rates up to 108KHz."
Hmmm. That CS5343 looks interesting. If I can figure out a connection circuit for it with the CS8406 I would be a lot closer to what I want to design.
I downloaded the data sheets in the last hour. That CS8406 does have a lot of pins to work with. Is there a smaller audio transmitter on the market?
You want the datasheet for the CS5343 development board.
The AK4104 has 16 pins compared to the 28 pins of the CS8406 but it trades the option of pin configuration for microcontroller only configuration.
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