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TI Home » TI E2E Community » Support Forums » Data Converters » Audio Converters » Audio Converters Forum » TLV320AIC3107EVM stand alone
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TLV320AIC3107EVM stand alone

TLV320AIC3107EVM stand alone

This question is answered
Fabien Gaubert1
Posted by Fabien Gaubert1
on Jul 31 2012 09:42 AM
Intellectual460 points

Hi,

Is it possible to use the TLV320AIC3107EVM without the motherboard?

I supplied J15 with a 5v external supply, but I2C doesn't seems to respond.

Thank you.

tlv320aic3107
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  • Don Dapkus
    Posted by Don Dapkus
    on Jul 31 2012 20:29 PM
    Guru101845 points

    Hi, Fabien,

    Sure!

    The details are provided in Appendix A of the EVM Users Guide (here). 

    -d2

    -----

    Don Dapkus

    Audio Applications Engineering Manager

    Dallas, TX USA

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  • Fabien Gaubert1
    Posted by Fabien Gaubert1
    on Aug 01 2012 03:19 AM
    Intellectual460 points

    Hi Don Dapkus,

    Thank you for the answer. Could you be more specific because I already read it and can't find information about power supply.

    Appendix A 1. is about analog signals, 2. is about digital interface and 3 is about power supply on the motherboard, not on the EVM.

    Fabien

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  • Fabien Gaubert1
    Posted by Fabien Gaubert1
    on Aug 01 2012 04:53 AM
    Intellectual460 points

    Hi,

    I've wired a 5v external power supply to TP41, and selected the +5VA position on SW3.I've also placed a jumper on 1-2 pins of w14, to set IOVDD to 3.3v.

    Everything seems to be powered as it should now.

    Fabien

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  • Fabien Gaubert1
    Posted by Fabien Gaubert1
    on Aug 02 2012 08:19 AM
    Intellectual460 points

    Hi, I'm re-opening the topic.

    When I supply 5v to TP41, the 3.3v voltage is generated by a LDO (U2).

    But I need to supply 1.8v to TP7 or TP45 ie DVDD (Digital Supply Core Voltage). Is it right?

    Thank you.

    Fabien

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  • Converter Apps
    Posted by Converter Apps
    on Aug 03 2012 10:10 AM
    Verified Answer
    Verified by Fabien Gaubert1
    Mastermind18280 points

    Yes, the board also requires 1.8V for the digital core which is usually supplied by the mother board. Without the motherboard, you will need to supply the 1.8V externally.

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  • Fabien Gaubert1
    Posted by Fabien Gaubert1
    on Aug 03 2012 10:46 AM
    Verified Answer
    Verified by Converter Apps
    Intellectual460 points

    Yes, but actually, this is not enough.

    The board also needs a 3.3v supply on TP43 IOVDD as analog and digital are separated.

    And... two pull-up resistors on I2C lines. Pull-ups are also on the motherboard...

    Fabien

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