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TLV320AIC3262 Power Consumption

shekhar SAINI97194
Intellectual 550 points
Other Parts Discussed in Thread: TLV320AIC3262

Hello,

i need a power consumption details of the TLV320AIC3262 audio codec. The audio codec  application guide specify about power consumption of the ADC & DAC in different modes possible. I need maximum power consumption on each power rail.

Regards

  • 0
    TI__Mastermind 46195 points

    Hi,

    When determining maximum power consumption, analog output loads dominate this number. In general DVDD will consume a max of 70mA or so worst case. HVDD and CPVDD depends on the load connected to it (use 50% efficiency as an estimate).

    For power supply requirements, use the following guidelines:

    1. HVDD, CPVDD, DVDD, AVDD18 - Use only one 1.8V 400mA regulator for these supplies (assuming 2x HP 16-ohm loads). If a clean AVDD18 is desired, use a separate regulator for AVDD (100mA is fine).
    2. RECVDD - Use 100mA regulator.
    3. AVDD33  - 20mA max.
    4. IOVDD - 10mA max (strongly depends if running on master or slave mode and how much capacitive load there is on the output clocks).
    5. SxVDD - Connected to system battery (if within voltage spec). 1.8W per channel at 5.5V, which means 600mA or so per channel.

    Regards,

    J-

  • 0 in reply to J-
    Prodigy 70 points

    I need to know the total power consumption of the IC. I need to find battery for that. Can you suggest?

  • 0 in reply to Kasi Balaji Ganapathi
    TI__Mastermind 46195 points

    Kasi,

    You can use the numbers I provided to calculate the required battery. If you use an LDO, you simply add the currents. If you use a DC/DC, then current at the battery will be less based on its efficiency.

    Regards,

    J-