描述The ADS8472 is an 16-bit, 1-MSPS A/C converter with an internal 4.096-V reference and a pseudo-bipolar, fully differential input. The device includes a 16-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8472 offers a full 16-bit interface or an 8-bit bus option using two read cycles.The ADS8472 is available in a 48-lead 7x7 QFN package and is characterized over the industrial -40°C to 85°C temperature range.特性0 to 1-MHz Sample Rate ±0.4 LSB Typ, ±0.65 LSB Max INL±0.3 LSB Typ, ±0.5 LSB Max DNL16-Bit NMC Ensured Over Temperature±0.1-mV Offset Error±0.05-PPM/°C Offset Error Drift±0.035 %FSR Gain Error±0.4-PPM/°C Gain Error Drift95dB SNR, -120dB THD, 123dB SFDRZero LatencyLow Power: 225 mW at 1 MSPSUnipolar Differential Input Range: Vref to -VrefOnboard Reference with 6 PPM/°C DriftOnboard Reference BufferHigh-Speed Parallel InterfaceWide Digital Supply 2.7 V to5.25 V8-/16-Bit Bus Transfer48-Pin 7x7 QFN PackageAPPLICATIONSMedical InstrumentsOptical NetworkingTransducer InterfaceHigh Accuracy Data Acquisition SystemsMagnetometers