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Description

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. A SPI 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.

Features

• 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
• Full Parallel Interface
• 2's Comp or BTC Output Code

Applications 

• Industrial Process Control
• Test Equipment
• Medical Equipment
• Data Acquisition Systems
• Digital Signal Processing
• Instrumentation