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简介：本文讲解Σ-ΔADC的通道切换
OUTPUT
MUX 
AIN1
AIN2
AIN3
AIN4
AD7708/AD7718
AGND
AIN5
AIN6
AIN7
AIN8
AD7708 16-BIT  ADC
AD771 8 24-BIT ADC
REFIN(+) REFIN(–)
SIGNAL
CONDITIONING BUF PGA ADC
REF
AVDD
DGND
DVDD
०঻
ԨᆌᆩԴऻኍܔAD7708ࢅAD7718ăຕ਍๮֩ၘဦຫ௽କ
Σ-Δ ADCڦ߸ႎ໏୲ă߸ႎ໏୲๟ኸړᅃ߲႑ࡽཚڢԥ჋
ዐLjADC૶Ⴤ৊ႜገ้࣑Ljገ࣑ڦ໏୲ă߸ႎ໏୲ൽਦᇀ
ᆌᆩዐ໯๑ᆩڦADCăഗॲڦރރኵݴՐ୲ࣷໜጣ߸ႎ໏
୲ڦ༵ߛܸူইăሞܠཚڢᆌᆩዐLj૩සᅃ߲ຕ਍֑णဣ
ཥLjࣷ܁ൽܠ߲ཚڢڦገ࣑ኵLjᄺ৽๟ຫLj௅߲ཚڢԥ୾
ୁ჋ዐժ৊ႜገ࣑ăሞኄᄣڦᆌᆩዐLjገ࣑ڦ໏୲ᇑڇཚ
ڢဣཥ၎Բ๟փཞڦăԨᆌᆩԴऻ௮ຎକኄၵഗॲڦൎ࣑
ࡗײă
ܠཚڢဣཥ
཮1၂๖କຕ਍֑णဣཥዐ๑ᆩڦAD7708ईAD7718ă௅߲
ཚڢ૶থڟᅃ߲دߌഗăAD7708/AD7718ਏᆶ੗Պײሺᅮ
ݣٷഗ(PGA)ࢅ੗Պײ߸ႎ໏୲Ljీᅜփཞڦ߸ႎ໏୲ܔ
փཞޗ܈ڦ႑ࡽ৊ႜገ࣑ăAD7708ࢅAD7718੗ᅜ๑ీई
্ᆩቘհࠀీăቘհ੗ᅜټઠگ฿ۙࢅگ฿ۙ೏ᅎăړ্




AN-665：Σ-ΔADC的通道切换.pdf