TLV320DAC3203: power supply turned off sequence

Yasushi Fujiwara

Hello Experts,

Would you tell a turned off sequence of power supply, please? There are some turned on sequence of power supply on E2E, but I don't find turned off sequence. Is there any recommended sequence?

Best Regards,
Fujiwara

over 2 years ago

0 YASUHIRO TAHARA over 2 years ago

Prodigy 20 points

Dear Experts,

Sorry for jump-in.

Regarding the above question, please let me know if there are any regulations regarding RESET timing and MCLK, BLCK, and WCLK stop timing.

Best regards,

Tahara

0 Jeff McPherson over 2 years ago in reply to YASUHIRO TAHARA

TI__Guru 51200 points

Hi Fujiwara-san and Tahara-san,

The device is very flexible to power down sequencing. To best avoid pops/clicks on power down, you should MUTE and power down the output drivers before removing power supplies from the device.

Section 3.1 in the application reference guide gives the timing requirements for RESET. MCLK, BCLK, and WCLK have no requirement for stop timing except that the output drivers should be powered down and muted before clocks are stopped.

Best regards,
Jeff McPherson

0 YASUHIRO TAHARA over 2 years ago in reply to Jeff McPherson

Prodigy 20 points

Hello Jeff-san,

Well noted ! We will proceed with the design based on your information.

Best regards,

Tahara

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TLV320DAC3203: power supply turned off sequence