ADS8402

ADS8402 SLAS154B – DECEMBER 2002 – REVISED MAY 2003 16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE FEATURES D 1.25-MHz Sample Rate D 16-Bit NMC Ensured Over Temperature D Zero Latency D Unipolar Differential Input Range: Vref to –Vref D Onboard Reference D Onboard Reference Buffer D High-Speed Parallel Interface D Power Dissipation: 155 mW at 1.25 MHz Typ D Wide Digital Supply D 8-/16-Bit Bus Transfer D 48-Pin TQFP Package APPLICATIONS D DWDM D Instrumentation D High-Speed, High-Resolution, Zero Latency Data Acquisition Systems D Transducer Interface D Medical Instruments D Communication DESCRIPTION The ADS8402 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 ADS8402 offers a full 16-bit interface and an 8-bit option where data is read using two 8-bit read cycles. The ADS8402 has a unipolar differential input. It is available in a 48-lead TQFP package and is characterized over the industrial –40°C to 85°C temperature range. SAR +IN –IN REFIN + _ Output Latches and 3-State Drivers BYTE 16-/8-Bit Parallel DATA Output Bus CDAC Comparator RESET Conversion and Control Logic CONVST BUSY CS RD REFOUT 4.096-V Internal Reference Clock Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instrum...