This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • TI Thinks Resolved

TLV320DAC3101: Premature device failure

Prodigy 55 points
Jaku

Replies: 4

Views: 162

Part Number: TLV320DAC3101

Our customer's board uses the device TLV320DAC3101IRHBT and finds about 20% failure on first power-up (no audio).  The device is replaced, and continuous to function as required.  What can cause the device to fail?

Some unused inputs are not tied (left open), i.e. AIN1, AIN2, VOL/MICDET, can this be a cause of failure?

Prodigy 55 points
Jaku
  • Mastermind 41975 points
    Ivan Salazar
    Hi Jaku,

    Could you share more details about their startup sequence?
    - Supply voltage sequence and levels
    - Input signals into the device (most important is Reset)

    The units that fail to startup are not able to work even after power-cycle? After the issue the units are not working at all in any environment/system?

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • Prodigy 55 points
    Jaku

    In reply to Ivan Salazar:

    Hi Ivan, thanks for your reply.  Once the unit fails, power-cycle does not recover the device.  Damage seems to be permanent.

    Attached are plots of power supplies with respect to RESET signal.  

    Thanks,

    Jaku

  • Mastermind 41975 points
    Ivan Salazar

    In reply to Jaku:

    Hi Jaku,

    Is the device apparently damaged just after power up? Or are you able to communicate with the device through I2C during the startup sequence?
    What is the IOVDD voltage, 1.8V or 3.3V? I assume it's 3.3V. Is there a chance that RESET signal ramps a bit slower than 3.3V rail so that RESET is at VIH voltage after DVDD and IOVDD rails are completely powered up?
    Is there a chance that you could share your schematic so we can review it?
    If you don't want to post it on the forum you can send me a message to: ivan.salazar@ti.com

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • Mastermind 41975 points
    Ivan Salazar

    In reply to Ivan Salazar:

    Jaku,

    This will be followed up by email.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.


All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI Worldwide | Contact Us | my.TI Login | Corporate Citizenship

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2019 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use