SBAA230 May   2017 ADC128D818 , ADS1000 , ADS1000-Q1 , ADS1013 , ADS1013-Q1 , ADS1014 , ADS1014-Q1 , ADS1015 , ADS1015-Q1 , ADS1018 , ADS1018-Q1 , ADS1100 , ADS1110 , ADS1112 , ADS1113 , ADS1113-Q1 , ADS1114 , ADS1114-Q1 , ADS1115 , ADS1115-Q1 , ADS1118 , ADS1118-Q1 , ADS1120 , ADS1120-Q1 , ADS1130 , ADS1131 , ADS1146 , ADS1147 , ADS1148 , ADS1148-Q1 , ADS114S06 , ADS114S06B , ADS114S08 , ADS114S08B , ADS1158 , ADS1174 , ADS1178 , ADS1191 , ADS1192 , ADS1194 , ADS1196 , ADS1198 , ADS1201 , ADS1202 , ADS1203 , ADS1204 , ADS1205 , ADS1208 , ADS1209 , ADS1216 , ADS1217 , ADS1218 , ADS1220 , ADS1222 , ADS1224 , ADS1225 , ADS1226 , ADS122C04 , ADS122U04 , ADS1230 , ADS1231 , ADS1232 , ADS1234 , ADS1240 , ADS1241 , ADS1242 , ADS1243 , ADS1243-HT , ADS1244 , ADS1245 , ADS1246 , ADS1247 , ADS1248 , ADS124S06 , ADS124S08 , ADS1250 , ADS1251 , ADS1252 , ADS1253 , ADS1254 , ADS1255 , ADS1256 , ADS1257 , ADS1258 , ADS1258-EP , ADS1259 , ADS1259-Q1 , ADS1261 , ADS1262 , ADS1263 , ADS1271 , ADS1274 , ADS1278 , ADS1278-EP , ADS1278-HT , ADS1278-SP , ADS127L01 , ADS1291 , ADS1292 , ADS1292R , ADS1293 , ADS1294 , ADS1294R , ADS1296 , ADS1296R , ADS1298 , ADS1298R , ADS1299 , ADS1299-4 , ADS1299-6 , ADS130E08 , ADS131A02 , ADS131A04 , ADS131E04 , ADS131E06 , ADS131E08 , ADS131E08S , ADS1601 , ADS1602 , ADS1605 , ADS1606 , ADS1625 , ADS1626 , ADS1672 , ADS1675 , AMC1035 , AMC1035-Q1 , AMC1106E05 , AMC1106M05 , AMC1203 , AMC1204 , AMC1204-Q1 , AMC1210 , AMC1303E0510 , AMC1303E0520 , AMC1303E2510 , AMC1303E2520 , AMC1303M0510 , AMC1303M0520 , AMC1303M2510 , AMC1303M2520 , AMC1304L05 , AMC1304L05-Q1 , AMC1304L25 , AMC1304L25-Q1 , AMC1304M05 , AMC1304M05-Q1 , AMC1304M25 , AMC1304M25-Q1 , AMC1305L25 , AMC1305L25-Q1 , AMC1305M05 , AMC1305M05-Q1 , AMC1305M25 , AMC1305M25-Q1 , AMC1306E05 , AMC1306E25 , AMC1306M05 , AMC1306M25 , AMC1336 , AMC1336-Q1 , AMC3306M05 , AMC3306M25 , AMC3336 , AMC3336-Q1 , LMP90077 , LMP90078 , LMP90079 , LMP90080 , LMP90080-Q1 , LMP90097 , LMP90098 , LMP90099 , LMP90100 , TLA2021 , TLA2022 , TLA2024

 

  1.   Digital Filter Types in Delta-Sigma ADCs
    1.     Trademarks
    2. 1 Introduction
    3. 2 Digital Filters in Delta-Sigma ADCs
    4. 3 Sinc Filter
    5. 4 Wideband Filters
    6. 5 References

Digital Filter Types in Delta-Sigma ADCs

This application report discusses digital filters which are a ubiquitous feature in delta-sigma analog to digital converters (ADCs). Digital low-pass filters are essential to the functionality of a delta-sigma ADC, which relies on oversampling and noise shaping to push quantization noise out of band. There are variations between the types of digital filters used in delta-sigma ADCs that provide various benefits and drawbacks that orient them to different applications. The types of filters and the tradeoffs between them are discussed in this report.