MSP430FG6626: ADC / DAC sample max sample rate

Steve Widener

Genius 11010 points

Part Number: MSP430FG6626

Can I use the ADC’s or the DACS at 33 kHz.

1. I need to digitize 33 kHz sine wave
2. I need to generate a 33 kHz sine wave, with filter

Do any internal filters limit frequency performance?

over 2 years ago

+1 Cash Hao11 over 2 years ago

TI__Mastermind 46685 points

Hi,

Based on the datasheet, you can use the ADC and DAC at 33kHz.

The data in the chapter 8.8.13.5 has already considered the influence of filter.

Best regards,

Cash Hao

0 Chris Kamilar over 2 years ago in reply to Cash Hao11

Prodigy 30 points

Does the ADC have an anti-aliasing filter? Where does the clock for the ADC come from? Where does the clock for the DAC come from?

Regards,

Chris

0 Jace H over 2 years ago in reply to Chris Kamilar

TI__Guru 56685 points

Hey Chris,

To clarify here, the fastest signal this device, with its CTSD16 ADC, will be able to sample is 32kHz. This is due to the oversampling ratio (OSR) that is built into the CTSD16. F_S = F_M/OSR = 1.024MHz/32 = 32kHz. OSR=32 is the lowest OSR available for this device.

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MSP430FG6626: ADC / DAC sample max sample rate