PCM1754: Output LPF

Kevin Xiong

Part Number: PCM1754

Hi,

In the PCM1754 datasheet, it recommends that there is a LPF which connects to output pin. My question is: Is the LPF MUST? If I want to make a cost-down version, can I omit the LPF?

Thanks.

Kevin Xiong

over 7 years ago

0 Sadanori Kato over 7 years ago

Guru 36540 points

Hi Kevin-san,

The CR passive post LPF is able to be applied if the out-of-band noise level is acceptable for your application, so please refer to the application note.

http://www.ti.com/lit/an/slea048/slea048.pdf

Best regards,
Kato

0 Paul_Frost over 7 years ago in reply to Sadanori Kato

TI__Guru 56523 points

Hi Kevin,

Sato-san's link is very applicable for this. At the very minimum I recommended a passive RC filter.

Thanks!
Paul

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PCM1754: Output LPF