Audio ADC selection

Feng Wu

Prodigy 300 points

Other Parts Discussed in Thread: TLV320ADC3140

Hi! I am looking for an audio codec with the following features:

1. Supply voltage: VDDA=3.3V, VDDD=3.3V. VDDP=3.3V;

2. Channel: 2;

3. bit: 24;

4. SNR: 100dB

5.sample rates: 8~200kHz

I find PCM189x on ti.com which meeting 1-4 but the sample rate only goes to 192sps, do we have any device meet all the demands?

over 5 years ago

0 Collin Wells over 5 years ago

TI__Guru 64215 points

Hello,

200kHz is a bit of an odd Audio sampling rate, but you'll find many devices support up to 192kHz, like the PCM186x family you found.

If you do need sampling rates >200kHz, check out the TLV320ADC3140. It's a 4-channel device and supports sampling rates up to 768kHz, but at the higher sampling rates the channel count becomes limited and only two channels are supported at 384kHz which would work for your needs.

TLV320ADCx140 Sampling Rates and Programmable Processing Blocks Supported

0 Feng Wu over 5 years ago in reply to Collin Wells

TI__Prodigy 300 points

Hi wells,

Thank you for your recommendations, I'll check with the sample rate again and TLV320ADCX140 can meet my needs.

Audio

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Audio ADC selection