® ADC674A
Microprocessor-Compatible ANALOG-TO-DIGITAL CONVERTER
FEATURES
q COMPLETE 12-BIT A/D CONVERTER WITH REFERENCE, CLOCK, AND 8-, 12-, OR 16-BIT MICROPROCESSOR BUS INTERFACE
q IMPROVED PERFORMANCE SECOND SOURCE FOR ADC574A/674A-TYPE A/D CONVERTERS Conversion Time: 15µs max Bus Access Time:150ns max A0 Input: Bus Contention During Read Operation Eliminated
q FULLY SPECIFIED FOR OPERATION ON ±12V OR ±15V SUPPLIES
q NO MISSING CODES OVER TEMPERATURE: 0°C to +75°C ADC674AJH, KH, JP, KP Grade.
ANALOG-TO-DIGITAL CONVERTER
® ADC674A
Microprocessor-Compatible ANALOG-TO-DIGITAL CONVERTER
FEATURES
q COMPLETE 12-BIT A/D CONVERTER WITH REFERENCE, CLOCK, AND 8-, 12-, OR 16-BIT MICROPROCESSOR BUS INTERFACE
q IMPROVED PERFORMANCE SECOND SOURCE FOR ADC574A/674A-TYPE A/D CONVERTERS Conversion Time: 15µs max Bus Access Time:150ns max A0 Input: Bus Contention During Read Operation Eliminated
q FULLY SPECIFIED FOR OPERATION ON ±12V OR ±15V SUPPLIES
q NO MISSING CODES OVER TEMPERATURE: 0°C to +75°C ADC674AJH, KH, JP, KP Grades –55°C to +125°C (ADC674ASH, TH Grades)
DESCRIPTION
The ADC674A is a 12-bit successive approximation analog-to-digital converter, utilizing state-of-the-art CMOS and laser-trimmed bipolar die custom-designed for freedom from latch-up and for optimum AC performance. It is complete with a self-contained +10V reference, internal clock, digital interface for microprocessor control, and three-state outputs.
The reference circuit, containing a buried zener, is laser-trimmed for minimum tem.