[AKM Chip Booster] AK5704 Low-Power 4-ch 32-bit ADC with MIC-Amp


AK5704 is an audio ADC with microphone amplifier. It has 4 channel and 32 bit resolution.
You can get the information including the datasheet from AKM website.

I listed some useful information here.

According to this article, they built a smart speaker demo using AK5704 and the demo was displayed during the CES 2018. 
News release date in the above link is stated as 2019/06/11, so I guess it officially became available nearly 1.5 years after the CES demo in 2018.

Application using AK5704 includes:
  • Conference system
  • Microphone array system
  • Smart speaker
  • Baby or pet monitor
  • IC recorder

 Parts are available from Digikey although the evaluation board is not available.
The chip price is $2.36/pcs (as of 4/11/2020), so it is quite reasonable for the people who want to prototype.


Notes:
QFN package with 28 pins so it is possible to hand solder the chip for the people who want to save the money 🙂
However, the exposed pad is a concern as it should be connected to the ground.
Maybe you can solder the pad easily by PCB design considering more grounding traces to the exposed pad. I don't know....

Also check:

[AKM Chip Booster] Audio ADC AK5704 PCB Design

Designing a PCB prototype with AK5704 is not so difficult and I show an example with my design. People who are not familiar with AK5704,...