ZHCABK1A February 2022 – March 2024 ADS1119 , ADS1120 , ADS1120-Q1 , ADS112C04 , ADS112S14 , ADS112U04 , ADS1130 , ADS1131 , ADS114S06 , ADS114S06B , ADS114S08 , ADS114S08B , ADS1158 , ADS1219 , ADS1220 , ADS122C04 , ADS122C14 , ADS122S14 , ADS122U04 , ADS1230 , ADS1231 , ADS1232 , ADS1234 , ADS1235 , ADS1235-Q1 , ADS124S06 , ADS124S08 , ADS1250 , ADS1251 , ADS1252 , ADS1253 , ADS1254 , ADS1255 , ADS1256 , ADS1257 , ADS1258 , ADS1258-EP , ADS1259 , ADS1259-Q1 , ADS125H01 , ADS125H02 , ADS1260 , ADS1260-Q1 , ADS1261 , ADS1261-Q1 , ADS1262 , ADS1263 , ADS127L01 , ADS130E08 , ADS131A02 , ADS131A04 , ADS131E04 , ADS131E06 , ADS131E08 , ADS131E08S , ADS131M02 , ADS131M03 , ADS131M04 , ADS131M06 , ADS131M08
對(duì)典型四線電阻式電橋測(cè)量電路稍加改動(dòng)，使用恒流源來激勵(lì)傳感器。電流激勵(lì)適用于某些硅基壓阻式傳感器，這些傳感器在由恒流源激勵(lì)時(shí)表現(xiàn)出恒定的溫度靈敏度。此外，電流激勵(lì)可降低單有源元件或雙有源元件電橋拓?fù)浣Y(jié)構(gòu)導(dǎo)致的非線性。圖 6-7 顯示了使用帶集成恒流源 (IDAC) 的 ADC的電流激勵(lì)電橋測(cè)量的原理圖。該 ADC 還使用由電流通過電阻式電橋產(chǎn)生的電壓作為差分基準(zhǔn)電壓。此比例基準(zhǔn)配置有助于消除激勵(lì)源中噪聲和漂移導(dǎo)致的誤差。