TAS5721 FILTER REGISTER PROGRAMMING

Bruno Merlo

Prodigy 225 points

Other Parts Discussed in Thread: TAS5721

Hello.

I have need information about this chip.

I have seen the slaa447 document but it doesn't math exactly with this component.

Ideal would be to find, in addition to the formulas, examples with real numbers.

Thanks

over 10 years ago

0 Damian Lewis over 10 years ago

TI__Mastermind 34675 points

Bruno,

Once you have your BiQuad coefficients for the frequency response of the filter. I have attached a spreadsheet that will help you convert the coefficient into the correct format needed to write to the registers. It includes a working example. Keep in mind TAS5721 uses 3.23 format and the B coefficients are the numerator and the A coefficients are the denominator. Sign inversion is need for the A coeffiecients.

1856.BQ_Coefficient_converter.xlsx