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 2.70us max over temperature, and the high speed sampling input stage insures a total acquisition and conversion time of 3us 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
ADS7800 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