描述The ADS8506 is a complete low power, single 5-V supply, 12-bit sampling analog-to-digital (A/D) converter. It contains a complete 12-bit capacitor-based, successive approximation register (SAR) A/D converter with sample and hold, clock, reference, and data interface. The converter can be configured for a variety of input ranges including ±10 V, 4 V,and 5 V. For most input ranges, the input voltage can swing to 25 V or –25 V without damage to the converter. ASPI compatible serial interface allows data to be synchronized to an internal or external clock. A full parallel interface with BYTE select is also provided to allow the maximum system design flexibility. The ADS8506 is specified at 40 kHz sampling rate over the industrial –40°C to 85°C temperature range.特性40-kHz Min Sampling Rate 4-V, 5-V, and ±10-V Input Ranges 73.9-dB SINAD with 10-kHz Input ±0.45 LSB Max INL ±0.45 LSB Max DNL, 12-Bit No Missing Codes ±5-mV BPZ, ±0.5 PPM/°C BPZ Drift SPI Compatible Serial Output With Daisy-Chain (TAG), SPI Master/Slave Feature Single 5-V Analog Supply Pin-Compatible With ADS7806 and 16-Bit ADS7807/8507 Uses Internal or External 2.5-V Reference Low Power Dissipation 24 mW Typ, 30 mW Max at 40 KSPS 50-µW Max Power Down Mode 28-Pin SO Package Full Parallel Interface 2’s Comp or BTC Output Code APPLICATIONS Industrial Process Control Test Equipment Medical Equipment Data Acquisition Systems Digital Signal Processing InstrumentationQSPI, SPI are trademarks of Motorola.