CCS/MSP432P401M: Booster Pack MK II

mohamadreza sarbandi

Part Number: MSP432P401M
Other Parts Discussed in Thread: OPA344

Tool/software: Code Composer Studio

Hi;

i want to record a sound with ADC of MSP432-launch pad & Booster pack MK II with 96K SPS. in booster pack MK II TI use a 40 dB amplifier(opa344) to amplify signal of microphone.

can i use this circuit for record sound without aliasing?

is there any anti-aliasing filter for this?

over 8 years ago

0 Keith Barkley over 8 years ago

Guru 42135 points

If you mean the Educational booster Pak Mk II, the schematic shows no filtering. You would have to supply your own anti-aliasing filter.

0 mohamadreza sarbandi over 8 years ago in reply to Keith Barkley

Prodigy 190 points

thanks for replying.
i guess that MICROPHONE "CMA-4544PF" operate as low pass filter but datasheet of "CMA-4544PF" did not show response frequency for upper 20Khz.

what is your suggestion for design of audio anti-aliasing filter ?

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CCS/MSP432P401M: Booster Pack MK II