描述The ADS8405 is a 16-bit, 1.25-MHz A/D converter with an internal 4.096-V reference. The device includes a 16-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8405 offers a full 16-bit interface and an 8-bit option where data is read using two 8-bit read cycles if necessary. The ADS8405 has a unipolar pseudo-differential input. It is available in a 48-lead TQFP package and is characterized over the industrial –40°C to 85°C temperature range.特性Unipolar Pseudo-Differential Input, 0 V to Vref 16-Bit NMC at 1.25 MSPS ±2 LSB INL Max, -1/+1.5 LSB DNL 86 dB SNR, -90 dB THD at 100 kHz Input Zero Latency Internal 4.096-V Reference High-Speed Parallel Interface Single 5-V Analog Supply Wide I/O Supply: 2.7 V to 5.25 V Low Power: 155 mW at 1.25 MHz Typ Pin Compatible With ADS8411/8401 48-Pin TQFP Package APPLICATIONS DWDM Instrumentation High-Speed, High-Resolution, Zero Latency Data Acquisition Systems Transducer Interface Medical Instruments Communications