Tool/software:
Hello there,
I have a working prototype consisting of a wireless kit that sends analog audio over a wireless link to a receiver that outputs the signal also in analog format:
1-Analog input to AK5720 ADC to a Wireless TX Link
2-Wireless RX Link to PCM5121 DAC to analog output.
When I measure JUST the Wireless Audio TX to RX link using I2S IN and I2S out, the SNR is 140dB and THD+N is -95dB.
The prototype uses the AK5720 in the TX device and the PCM5121 in the RX device, the measured SNR is 92dB and THD+N is -70dB:
Question:
1-what ADC and DAC alternatives can I use to improve the overall SNR and THD+N audio performance and get closer to the I2S-only measurements?
2-Any recommended pre-ADC and post-DAC circuits to improve the SNR and THD+N? Any Application note
I appreciate any help you can provide.
Thanks