ADS774

® ADS 774 ADS 774 ADS774 ADS 774 Microprocessor-Compatible Sampling CMOS ANALOG-to-DIGITAL CONVERTER FEATURES q REPLACES ADC574, ADC674 AND ADC774 FOR NEW DESIGNS q COMPLETE SAMPLING A/D WITH REFERENCE, CLOCK AND MICROPROCESSOR INTERFACE q FAST ACQUISITION AND CONVERSION: 8.5µs max OVER TEMPERATURE q ELIMINATES EXTERNAL SAMPLE/HOLD IN MOST APPLICATIONS q GUARANTEED AC AND DC PERFORMANCE q SINGLE +5V SUPPLY OPERATION q LOW POWER: 120mW max q PACKAGE OPTIONS: 0.6" and 0.3" DIPs, SOIC DESCRIPTION The ADS774 is a 12-bit successive approximation analog-to-digital converter using an innovative capacitor array (CDAC) implemented in low-power CMOS technology. This is a drop-in replacement for ADC574, ADC674, and ADC774 models in most applications, with internal sampling, much lower power consumption, and the ability to operate from a single +5V supply. The ADS774 is complete with internal clock, microprocessor interface, three-state outputs, and internal scaling resistors for input ranges of 0V to +10V, 0V to +20V, ±5V, or ±10V. The maximum throughput time is 8.5µs over the full operating temperature range, including both acquisition and conversion. Complete user control over the internal sampling function facilitates elimination of external sample/hold amplifiers in most existing designs. The ADS774 requires +5V, with –15V optional. No +15V supply is required. Available packages include 0.3" or 0.6" wide 28-pin plastic DIP and 28-pin SOICs. Status Control Inputs Bipolar Of...