AD7843触摸屏数字转换器Touch Screen Digitizer AD7843 FEATURES 4-wire touch screen interface Specified throughput rate of 125 kSPS Low power consumption: 1.37 mW max at 125 kSPS with VCC = 3.6 V Single supply, VCC of 2.2 V to 5.25 V Ratiometric conversion High speed serial interface Programmable 8-bit or 12-bit resolution 2 auxiliary analog inputs Shutdown mode: 1 A max 16-lead QSOP and TSSOP packages FUNCTIONAL BLOCK DIAGRAM +VCC PENIRQ AD7843 X+ X……