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AD9957 Spectral Invert

Question asked by riverms on May 21, 2012
Latest reply on May 22, 2012 by KennyG

I have one question.

 

Table 28.

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Bit(s0)     Mnemonic                    Description

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57          Spectral Invert               0:the modulator output takes the form:I(t)xcost(ct)-Q(t)xsin(ct).    - (A)

                                                 1:the modulator output takes the form:I(t)xcost(ct)+Q(t)xsin(ct).   - (B)

 

 

 

(A) : noninverted output

(B) : inverted output

 

or

 

(A) : inverted output

(B) : noninverted output

 

which is right ?

 

Thanks.

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