描述 Description

The ADS8517 is a complete low-power, single 5-V supply, 16-bit sampling analog-to-digital (A/D) converter. It contains a complete, 16-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 device. An SPI-compatible serial interface allows data to be synchronized to an internal or external clock. A full parallel interface using the selectable BYTE pin is also provided to allow the maximum system design flexibility. The ADS8517 is specified at a 200-kHz sampling rate over the industrial -40°C to +85°C temperature range.

特性 Features

? 200-kHz Minimum Sampling Rate
? 4-V, 5-V, and ±10-V Input Ranges with High-Impedance Input
? ±1.5 LSB Max INL
? +1.5/-1 LSB Max/Min DNL, 16 Bits NMC
? ±2-mV Max BPZ, ±0.6 ppm/°C BPZ Drift
? ±2-mV Max UPZ, ±0.15 ppm/°C UPZ Drift
? 88.8-dB SINAD with 10-kHz Input
? SPI-Compatible Serial Output With Daisy-Chain (TAG), SPI Master/Slave Feature
? Full Parallel Interface
? Binary Twos Complement or Straight Binary Output Code Formats
? Single 4.5-V to 5.5-V Analog Supply, 1.65-V to 5.5-V Interface Supply
? Uses Internal 2.5-V or External Reference
? No External Precision Resistors Required
? Low Power Dissipation (ADC+REF+BUF):
? 47 mW Typ, 60 mW Max at 200 kSPS

? 50-μW Max Power-Down Mode
? Pin-Compatible with 16-Bit ADS7807 and ADS8507, and 12-Bit ADS7806 and ADS8506
? SO-28 and TSSOP-28 Packages
? APPLICATIONS
? Portable Test Equipment
? USB Data Acquisition Module
? Medical Equipment
? Industrial Process Control
? Digital Signal Processing
? Instrumentation