TLV5630 Daisy-Chain configuration and supply configuration doubts

Marc Casanovas

Other Parts Discussed in Thread: TLV5630

I want to apply a Daisy-chain and dual supply (diferent supply for analog and digital) configuration with TLV5630 DAC.

I have some doubts with this configuration :

If separate AVDD an DVDD are used, in page 10 of datasheet is recommended for a correct Power-on-reset, that " AVDD must come up first before DVDD " Can I switch off DVDD an switch ON DVDD to guarantee a power-on reset ?

Thanks in advance.

0 Eugenio Mejia over 10 years ago

Hello Marc,

I think you may have included some pictures with your post, but I can't see them. Can you please re-attach the pictures?

I will attempt to answer your questions without the pictures for now. I will revise my answers accordingly when you can re-attach your pictures.

Marc Casanovas said:
Can I share SCLK,FS, /LDAC and /PRE lines between DACs ?

Yes.

Marc Casanovas said:
CAn I supply DVDD at 3.4V ?.. in datasheet is recomended 3.3 Máximum.

Yes, you should be able to do this. Why do you prefer to supply 3.4V?

Marc Casanovas said:
Can I switch off DVDD an switch ON DVDD to guarantee a power-on reset ?

The DAC may latch into an unknown state if DVDD powers-on first. Can you keep DVDD off while AVDD powers-on?

0 Marc Casanovas over 10 years ago in reply to Eugenio Mejia

0 Eugenio Mejia over 10 years ago in reply to Marc Casanovas

Unfortunately I still can't see the pictures. Is it okay to contact you to your E2E registered email address?

0 Marc Casanovas over 10 years ago in reply to Eugenio Mejia

Ok.

Thanks.

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