What is Acquisition window size

Ras Sharif50

Genius 3455 points

Other Parts Discussed in Thread: TMS320F28335

Dear Experts,

I don't understand the function of ACQ_PS[3:0] bits in TMS320F28335?

When I change it, the sampling rate changes else!

I appreciate for the help.

Regards,

Ras

over 12 years ago

0 Joe Prushing over 12 years ago

TI__Genius 15146 points

Ras-

ACQ_PS is the acquisition pre-scalar. In other words it affects how long the analog signal will be sampled before conversion. Longer sample windows will cause slower sample rates. This should be documented in the TMS320x2833x, 2823x Analog-to-Digital Converter (ADC) Module Reference Guide.

I hope that clears it up,

Joe

0 Ras Sharif50 over 12 years ago in reply to Joe Prushing

Genius 3455 points

Dear Joe,

Thank you for the reply.

Joe Prushing said:
how long the analog signal will be sampled before conversion

What does it mean?

Is it mean that the ADC has a buffer?

Regards,

Ras

0 Gautam Iyer over 12 years ago in reply to Ras Sharif50

Guru 192875 points

Hi Ras,

ACQ_PS[3:0] Acquisition window size. This bit field controls the width of SOC pulse, which, in turn, determines for what time duration the sampling switch is closed.

I hope this clears your doubt.

Regards,

Gautam

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What is Acquisition window size