Can you send me the AD9856 filter coefficients?

Document created by analog-archivist Employee on Feb 23, 2016
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Can you send me the AD9856 filter coefficients?

 

Below are the filter coefficients:

Halfband 1:
coefs[0] = -1;
coefs[1] = 0;
coefs[2] = 4;
coefs[3] = 0;
coefs[4] = -10;
coefs[5] = 0;
coefs[6] = 22;
coefs[7] = 0;
coefs[8] = -40;
coefs[9] = 0;
coefs[10] = 69;
coefs[11] = 0;
coefs[12] = -112;
coefs[13] = 0;
coefs[14] = 177;
coefs[15] = 0;
coefs[16] = -278;
coefs[17] = 0;
coefs[18] = 450;
coefs[19] = 0;
coefs[20] = -824;
coefs[21] = 0;
coefs[22] = 2592;
coefs[23] = 4096;
coefs[24] = 2592;
coefs[25] = 0;
coefs[26] = -824;
coefs[27] = 0;
coefs[28] = 450;
coefs[29] = 0;
coefs[30] = -278;
coefs[31] = 0;
coefs[32] = 177;
coefs[33] = 0;
coefs[34] = -112;
coefs[35] = 0;
coefs[36] = 69;
coefs[37] = 0;
coefs[38] = -40;
coefs[39] = 0;
coefs[40] = 22;
coefs[41] = 0;
coefs[42] = -10;
coefs[43] = 0;
coefs[44] = 4;
coefs[45] = 0;
coefs[46] = -1;
 

Halfband 2:
coefs[0] = -7;
coefs[1] = 0;
coefs[2] = 40;
coefs[3] = 0;
coefs[4] = -145;
coefs[5] = 0;
coefs[6] = 624;
coefs[7] = 1024;
coefs[8] = 624;
coefs[9] = 0;
coefs[10] = -145;
coefs[11] = 0;
coefs[12] = 40;
coefs[13] = 0;
coefs[14] = -7;


Halfband 3:
coefs[0] = 1;
coefs[1] = 0;
coefs[2] = -7;
coefs[3] = 0;
coefs[4] = 38;
coefs[5] = 64;
coefs[6] = 38;
coefs[7] = 0;
coefs[8] = -7;
coefs[9] = 0;
coefs[10] = 1;


Inverse Sinc Filter:
coefs[0] = 2;
coefs[1] = -3;
coefs[2] = 6;
coefs[3] = -11;
coefs[4] = 20;
coefs[5] = -39;
coefs[6] = 91;
coefs[7] = -298;
coefs[8] = 3329;
coefs[9] = -298;
coefs[10] = 91;
coefs[11] = -39;
coefs[12] = 20;
coefs[13] = -11;
coefs[14] = 6;
coefs[15] = -3;
coefs[16] = 2;

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