Can you please recommend me an audio codec, 24-bit, 192Kbps, at least 115dB, both on the Rx and Tc front?
How many channels of ADC and DAC do you need for your system? What analog voltage operating levels are in the circuit before and after the codec? What DC voltages are present in the design to power the codec?
SorryI am late getting back to you.
I have looked around and all the codecs I have come across that claim 192 kspsare on the DAC side with a maximum rate of 96 ksps on the ADC. We have a fewmore design ideas up our sleeve if we can’t find an appropriate codec.
We have a number of Codecs that will sample at 192 kHz on both the ADC and the DAC sides. The problem is with the 115 dB specification you mentioned. I assume you are talking about the DNR or SNR specs?
Here are some things to look at:
The AD1939 is a good part with good performance but it is 4 ADCs and 8 DACs. AD1939 datasheet and product info | 4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec | Audio CODECs | Analog Devices
Note: This is the SPI part. If I2C is desired then look at the AD1937.
A new Codec we have is the ADAU1372. It is four ADCs and two DACs. This codec architecture is a bit different. By default, the ADC and DACs run at 192 kHz and then the serial ports have an ASRC to convert to any sample rate as a slave and several rates as a master. This makes for a really low latency performance. However, the DNR is not the 115 dB you are looking for.
ADAU1372 datasheet and product info | Quad ADC, Dual DAC, Low Latency, Low Power Codec | Audio CODECs | Analog Devices
We can reach that performance with the ADAU1962 DACs but it is 12 channels and we have other ADCs that come close to that performance level so this is a two chip solution not a codec.
So have a look and let us know.
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