描述The ADS7800 is a complete 12-bit sampling analog-to-digital converter using state-of-the-art CMOS structures. It contains a complete 12-bit successive approximation A/D converter with internal sample/hold, reference, clock, digital interface for microprocessor control, and three-state output drivers. The ADS7800 is specified at a 333kHz sampling rate. Conversion time is factory set for 2.70µs max over temperature, and the high speed sampling input stage insures a total acquisition and conversion time of 3µs max over temperature. Precision, laser-trimmed scaling resistors provide industry-standard input ranges of ±5V or ±10V. AC and DC performance are completely specified. Two grades based on linearity and dynamic performance are available to provide the optimum price/performance fit in a wide range of applications.The 24-pin ADS7800 is available in plastic and side-braze hermetic 0.3" wide DIPs, and in an SOIC package. It operates from a +5V supply and either a –12V or –15V supply. The ADS7800 is available in grades specified over 0°C to +70°C and –40°C to +85°C temperature ranges.特性333k SAMPLES PER SECOND STANDARD ±10V AND ±5V INPUT RANGES DC PERFORMANCE OVER TEMP: No Missing Codes 1/2LSB Integral Linearity Error 3/4LSB Differential Linearity Error AC PERFORMANCE OVER TEMP: 72dB Signal-to-Noise Ratio 80dB Spurious-free Dynamic Range –80dB Total Harmonic Distortion INTERNAL SAMPLE/HOLD, REFERENCE, CLOCK, AND THREE-STATE OUTPUTS POWER DISSIPATION: 215mW max PACKAGE:24-Pin Single-Wide DIP 24-Lead SOICNote: Recommended Voltage Reference: REF02 and REF102 All trademarks are teh property of their respective owners.