PCM3168A: Schematics Review

Shifali N

Part Number: PCM3168A

Hi,

I am using PCM3168APAP Audio Codec in my design. I have attached the schematics. Can someone please review the schematics and let us know your feedbacks on the same8510.Audio Codec.pdf

over 5 years ago

0 Arash Loloee over 5 years ago

TI__Mastermind 35731 points

I will take a look at it and let you know. by the endo f tomorrow.

Regards,

Arash

0 Arash Loloee over 5 years ago in reply to Arash Loloee

TI__Mastermind 35731 points

Hello, I looked through your schematic and I only noticed you are using RST_N and tied it to active High , where as in datasheet it is RST which is Reset and power-down control input with active low.

Kind Regards,

Arash

0 Shifali N over 5 years ago in reply to Arash Loloee

Expert 2225 points

Hi Arash,

Can you please let me know how RST pin should be connected.

0 Arash Loloee over 5 years ago in reply to Shifali N

TI__Mastermind 35731 points

Hello, based on datasheet it needs to be active low not active high.

you can also take a look at EVM documentation for this part to better understand the usage and general connections at:

https://www.ti.com/lit/ug/sbau150/sbau150.pdf?ts=1625670817653&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FPCM3168A%253FkeyMatch%253DPCM3168APAP%2526tisearch%253Dsearch-everything

Regards,

Arash

0 Shifali N over 5 years ago in reply to Arash Loloee

Expert 2225 points

Hi,

Can you please let me now at what impedance VIN+/- and Vout+/- should be routed if its configured as differential. Should 100ohm impedance be ok.

At what impedance VIN+/- and Vout+/- are routed in DEM-DAI3168A EVM

0 Ivan Salazar over 5 years ago in reply to Shifali N

TI__Guru** 114505 points

Hi Shifali,

100ohm should be OK. As long as layout on both sides of the differential connection are as balanced as possible, the actual load would be the circuit the input or output is connected to, eg. a filter, an amplfiier, etc.

Best regards,
-Ivan Salazar
Applications Engineer

Audio

Audio forum

PCM3168A: Schematics Review