Datasheet

MAX260/MAX261/MAX262
Microprocessor Programmable
Universal Active Filters
14 ______________________________________________________________________________________
PROGRAMMED Q PROGRAM CODE
MODES
1,3,4
MODE
2
N Q6Q5Q4Q3Q2Q1Q0
0.800 1.13 48 0110000
0.810 1.15 49 0110001
0.821 1.16 50 0110010
0.831 1.18 51 0110011
0.842 1.19 52 0110100
0.853 1.21 53 0110101
0.865 1.22 54 0110110
0.877 1.24 55 0110111
0.889 1.26 56 0111000
0.901 1.27 57 0111001
0.914 1.29 58 0111010
0.928 1.31 59 0111011
0.941 1.33 60 0111100
0.955 1.35 61 0111101
0.969 1.37 62 0111110
0.985 1.39 63 0111111
1.00 1.41 64 1000000
1.02 1.44 65 1000001
1.03 1.46 66 1000010
1.05 1.48 67 1000011
1.07 1.51 68 1000100
1.08 1.53 69 1000101
1.10 1.56 70 1000110
1.12 1.59 71 1000111
1.14 1.62 72 1001000
1.16 1.65 73 1001001
1.19 1.68 74 1001010
1.21 1.71 75 1001011
1.23 1.74 76 1001100
1.25 1.77 77 1001101
1.28 1.81 78 1001110
1.31 1.85 79 1001111
1.33 1.89 80 1010000
1.36 1.93 81 1010001
1.39 1.97 82 1010010
1.42 2.01 83 1010011
1.45 2.06 84 1010100
1.49 2.10 85 1010101
1.52 2.16 86 1010110
1.56 2.21 87 1010111
PROGRAMMED Q PROGRAM CODE
MODES
1,3,4
MODE
2
N Q6Q5Q4Q3Q2Q1Q0
1.60 2.26 88 1 0 1 1 0 0 0
1.64 2.32 89 1 0 1 1 0 0 1
1.68 2.40 90 1 0 1 1 0 1 0
1.73 2.45 91 1 0 1 1 0 1 1
1.78 2.51 92 1 0 1 1 1 0 0
1.83 2.59 93 1 0 1 1 1 0 1
1.88 2.66 94 1 0 1 1 1 1 0
1.94 2.74 95 1 0 1 1 1 1 1
2.00 2.83 96 1 1 0 0 0 0 0
2.06 2.92 97 1 1 0 0 0 0 1
2.13 3.02 98 1 1 0 0 0 1 0
2.21 3.12 99 1 1 0 0 0 1 1
2.29 3.23 100 1 1 0 0 1 0 0
2.37 3.35 101 1 1 0 0 1 0 1
2.46 3.48 102 1 1 0 0 1 1 0
2.56 3.62 103 1 1 0 0 1 1 1
2.67 3.77 104 1 1 0 1 0 0 0
2.78 3.96 105 1 1 0 1 0 0 1
2.91 4.11 106 1 1 0 1 0 1 0
3.05 4.31 107 1 1 0 1 0 1 1
3.20 4.53 108 1 1 0 1 1 0 0
3.37 4.76 109 1 1 0 1 1 0 1
3.56 5.03 110 1 1 0 1 1 1 0
3.76 5.32 111 1 1 0 1 1 1 1
4.00 5.66 112 1 1 1 0 0 0 0
4.27 6.03 113 1 1 1 0 0 0 1
4.57 6.46 114 1 1 1 0 0 1 0
4.92 6.96 115 1 1 1 0 0 1 1
5.33 7.54 116 1 1 1 0 1 0 0
5.82 8.23 117 1 1 1 0 1 0 1
6.40 9.05 118 1 1 1 0 1 1 0
7.11 10.1 119 1 1 1 0 1 1 1
8.00 11.3 120 1 1 1 1 0 0 0
9.14 12.9 121 1 1 1 1 0 0 1
10.7 15.1 122 1 1 1 1 0 1 0
12.8 18.1 123 1 1 1 1 0 1 1
16.0 22.6 124 1 1 1 1 1 0 0
21.3 30.2 125 1 1 1 1 1 0 1
32.0 45.3 126 1 1 1 1 1 1 0
64.0 90.5 127 1 1 1 1 1 1 1
Table 3. Q Program Selection Table (continued)
Notes 5) In modes 1, 3, and 4: Q = 64 / (128 - N)
6) In mode 2, the listed Q values are those of mode 1 multiplied by √2. Then Q = 90.51 / (128 - N)