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SM5302AS Datasheet(PDF) 17 Page - Nippon Precision Circuits Inc |
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SM5302AS Datasheet(HTML) 17 Page - Nippon Precision Circuits Inc |
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17 / 26 page ![]() SM5302A NIPPON PRECISION CIRCUITS INC.—17 Lowpass Filter The IC has built-in 5th-order lowpass filters with variable cutoff frequency. The frequency range is determined by the resistor (RISET) connected between ISET and GND, and the cutoff frequency is set by register FCDATA data. The cutoff frequency vs. FCDATA values are listed in table 2, and shown graphically in figure 1. Table 2. Cutoff frequency vs. FCDATA (RISET = 1.8kΩ) FCDATA FCSET (hex) Cutoff freq. [MHz] FCDATA FCSET (hex) Cutoff freq. [MHz] FCDATA FCSET (hex) Cutoff freq. [MHz] FCDATA FCSET (hex) Cutoff freq. [MHz] 0 00 4.74 64 40 17.19 128 80 7.80 192 C0 27.49 1 01 4.95 65 41 17.37 129 81 8.13 193 C1 27.77 2 02 5.15 66 42 17.55 130 82 8.47 194 C2 28.05 3 03 5.36 67 43 17.73 131 83 8.80 195 C3 28.33 4 04 5.56 68 44 17.91 132 84 9.13 196 C4 28.61 5 05 5.77 69 45 18.09 133 85 9.45 197 C5 28.89 6 06 5.97 70 46 18.27 134 86 9.78 198 C6 29.17 7 07 6.18 71 47 18.45 135 87 10.11 199 C7 29.44 8 08 6.38 72 48 18.63 136 88 10.44 200 C8 29.72 9 09 6.59 73 49 18.81 137 89 10.76 201 C9 30.00 10 0A 6.79 74 4A 18.99 138 8A 11.09 202 CA 30.27 11 0B 6.99 75 4B 19.17 139 8B 11.41 203 CB 30.55 12 0C 7.20 76 4C 19.35 140 8C 11.74 204 CC 30.82 13 0D 7.40 77 4D 19.52 141 8D 12.06 205 CD 31.09 14 0E 7.60 78 4E 19.70 142 8E 12.38 206 CE 31.36 15 0F 7.80 79 4F 19.88 143 8F 12.70 207 CF 31.63 16 10 8.00 80 50 20.05 144 90 13.02 208 D0 31.90 17 11 8.20 81 51 20.23 145 91 13.34 209 D1 32.17 18 12 8.40 82 52 20.40 146 92 13.66 210 D2 32.44 19 13 8.60 83 53 20.58 147 93 13.98 211 D3 32.71 20 14 8.80 84 54 20.75 148 94 14.30 212 D4 32.98 21 15 9.00 85 55 20.93 149 95 14.61 213 D5 33.24 22 16 9.20 86 56 21.10 150 96 14.93 214 D6 33.51 23 17 9.40 87 57 21.27 151 97 15.25 215 D7 33.77 24 18 9.60 88 58 21.45 152 98 15.56 216 D8 34.04 25 19 9.79 89 59 21.62 153 99 15.87 217 D9 34.30 26 1A 9.99 90 5A 21.79 154 9A 16.19 218 DA 34.56 27 1B 10.19 91 5B 21.96 155 9B 16.50 219 DB 34.83 28 1C 10.38 92 5C 22.13 156 9C 16.81 220 DC 35.09 29 1D 10.58 93 5D 22.30 157 9D 17.12 221 DD 35.35 30 1E 10.77 94 5E 22.47 158 9E 17.43 222 DE 35.61 31 1F 10.97 95 5F 22.65 159 9F 17.74 223 DF 35.87 32 20 11.16 96 60 22.81 160 A0 18.04 224 E0 36.12 33 21 11.36 97 61 22.98 161 A1 18.35 225 E1 36.38 34 22 11.55 98 62 23.15 162 A2 18.66 226 E2 36.64 35 23 11.75 99 63 23.32 163 A3 18.96 227 E3 36.89 36 24 11.94 100 64 23.49 164 A4 19.27 228 E4 37.15 37 25 12.13 101 65 23.66 165 A5 19.57 229 E5 37.40 38 26 12.32 102 66 23.83 166 A6 19.88 230 E6 37.65 39 27 12.52 103 67 23.99 167 A7 20.18 231 E7 37.91 40 28 12.71 104 68 24.16 168 A8 20.48 232 E8 38.16 41 29 12.90 105 69 24.33 169 A9 20.78 233 E9 38.41 42 2A 13.09 106 6A 24.49 170 AA 21.08 234 EA 38.66 43 2B 13.28 107 6B 24.66 171 AB 21.38 235 EB 38.91 44 2C 13.47 108 6C 24.82 172 AC 21.68 236 EC 39.16 45 2D 13.66 109 6D 24.99 173 AD 21.98 237 ED 39.40 46 2E 13.85 110 6E 25.15 174 AE 22.27 238 EE 39.65 47 2F 14.04 111 6F 25.31 175 AF 22.57 239 EF 39.90 48 30 14.23 112 70 25.48 176 B0 22.87 240 F0 40.14 49 31 14.41 113 71 25.64 177 B1 23.16 241 F1 40.39 50 32 14.60 114 72 25.80 178 B2 23.45 242 F2 40.63 51 33 14.79 115 73 25.97 179 B3 23.75 243 F3 40.87 52 34 14.98 116 74 26.13 180 B4 24.04 244 F4 41.11 53 35 15.16 117 75 26.29 181 B5 24.33 245 F5 41.36 54 36 15.35 118 76 26.45 182 B6 24.62 246 F6 41.60 55 37 15.54 119 77 26.61 183 B7 24.91 247 F7 41.84 56 38 15.72 120 78 26.77 184 B8 25.20 248 F8 42.07 57 39 15.91 121 79 26.93 185 B9 25.49 249 F9 42.31 58 3A 16.09 122 7A 27.09 186 BA 25.78 250 FA 42.55 59 3B 16.27 123 7B 27.25 187 BB 26.06 251 FB 42.79 60 3C 16.46 124 7C 27.41 188 BC 26.35 252 FC 43.02 61 3D 16.64 125 7D 27.57 189 BD 26.63 253 FD 43.26 62 3E 16.82 126 7E 27.73 190 BE 26.92 254 FE 43.49 63 3F 17.01 127 7F 27.88 191 BF 27.20 255 FF 43.73 |
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