描述The ADS7812 is a low-power, single +5V supply, 12-bit sampling analog-to-digital converter. It contains a complete 12-bit capacitor-based SAR A/D with a sample/hold, clock, reference, and serial data interface. The converter can be configured for a variety of input ranges including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high impedance 0.3V to 2.8V input range is also available (input impedance > 10M). For most input ranges, the input voltage can swing to +16.5V or ?16.5V without damage to the converter. A flexible SPI compatible serial interface allows data to be synchronized to an internal or external clock. The ADS7812 is specified at a 40kHz sampling rate over the ?40°C to +85°C temperature range. It is available in a 0.3" DIP-16 or an SO-16 package.特性20μs max CONVERSION TIME SINGLE +5V SUPPLY OPERATION PIN-COMPATIBLE WITH 16-BIT ADS7813 EASY-TO-USE SERIAL INTERFACE 0.3" DIP-16 AND SO-16 ±0.5LSB max INL AND DNL 72dB min SINAD USES INTERNAL OR EXTERNAL REFERENCE MULTIPLE INPUT RANGES 35mW max POWER DISSIPATION NO MISSING CODES 50μW POWER DOWN MODE APPLICATIONS DATA ACQUISITION SYSTEMS INDUSTRIAL CONTROL TEST EQUIPMENT DIGITAL SIGNAL PROCESSINGNote: Recommended Voltage Reference: REF02 and REF102 All trademarks are the property of their respective owners.