AD7722 PDF File ( Datasheet )

a FEATURES 16-Bit Sigma-Delta ADC 64 Oversampling Ratio Up to 220 kSPS Output Word Rate Low-Pass, Linear Phase Digital Filter Inherently Monotonic On-Chip 2.5 V Voltage Reference Single Supply +5 V High Speed Parallel or Serial Interface 16-Bit, 195 kSPS CMOS, Sigma-Delta ADC AD7722 FUNCTIONAL BLOCK DIAGRAM DGND DVDD AGND AVDD REF1 AD7722 2.5V REFERENCE REF2 VIN(+) VIN( ) 16-BIT A, D CONVERTER Σ MODULATOR FIR FILTER P, S CAL RESET SYNC CS DVAL, RD CFMT, DRDY DB0 DB1 DB2 CONTROL LOGIC C