What would be overall power consumption of LPCXpresso54114 board along with MAO shield (Mic/Audio/OLED) shield

[kamalakannanr]

Hi,

We are using LPCXpresso54114 board along with MAO shiled(Add-on-board) for our speech recognition project.

We wanted to know overall power consumption the mentioned board including add-on-board for our design power estimation ?

Also planning to use microphone array(multiple microphone) on board with beam forming concept.

Does the LPCXpresso54114 evaluation board support beam pattern of microphone output ?

If you have any data regarding beam forming microphone array please share to us

 

We appreciate your quick response and thanks in advance 

[soledad]

Hi,

Unfortunately we cannot provide a comprehensive answer because the power consumption depends completely of your application.

The LPCXpresso54114 has built-in power measurement circuitry, controlled by its onboard Link2 debug probe. This circuitry can measure power consumed by the LPC54114 by sampling the voltage dropped across a sense resistor on the board using a differential amplifier, sampled at up to 200 kHz by a 12-bit ADC. The power consumed by the MAO Shield can be measured as well, since the Shield has a similar differential amplifier/sense resistor circuit. An analog multiplexer is used to select between these measurement sources.

For more information please check the user guide http://www.nxp.com/documents/user_manual/UM10973.pdf

Regarding multiple microphone, unfortunately this was not implemented nor tested in the LPCXpresso54114 evaluation board.

Have a great day,
Sol

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