I am looking for an ADC, but as I am new to this materia I'd like to ask you for an advice.
The ADC will be used for converting an audio signal which is burried in noise (~ -50dB to -70dB) and later recoverd with lock in technique.
I am thinking about a 16bit to 24bit converter with up to 350kHz sampling rate. This is pretty easy to find in the offers of TI.
The next point is the "low noise" property and here I am not quite sure what fits. So what are good values (SNR, SINAD) for such ADCs??
- 16-24 Bits
- 350kHz samplerate (minimum)
- Serial interface (SPI if possible)
- low noise!
- 2 Channel (if possible, but 1 would be enough)
- Features welcomed but not necessary: AA filter, DC filter
I hope you can give me some advice.
Here are 2 ADC I found, maybe you can tell me what you think about them:
AD S8865 | AD S8864