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I am looking for small form factor (TWS) audio codec to interface 4 mems mic at least . Audio codec should be interfaceable with the host processor over I2S or ADF. Can you suggest the p/n or a possible combination of codec+mic?
I’m unfamiliar with “ADF” as a interface/signalling protocol analogous to I2S; further information about that and the resources available on the host processor may be helpful.
I2S as such is typically understood as a 2-channel interface, so handling 4+ channels with only one proper I2S port would be difficult. While the similar TDM interface supports >2 channels and many devices accommodate both protocols, it is not always so.
The ADAU7118 may be of interest, as a device designed to interface up to 8 PDM mic inputs to an I2S/TDM output.
Understanding “TWS” to refer to a wireless earbud sort of application however, the package for that device might be thought overly large. The extreme space constraints of such an application along with their high-volume nature suggests the use of an ASIC if existing application profiles have not already resulted in devices of a suitable size with the desired feature set.
