ADC9708 Datasheet | National Semiconductor

Description The ADC9708 is a single slope 8-bit 6-channel ADC subsystem that provides all of the necessary analog functions for a microprocessor-based data control system The device uses an external microprocessor system to provide the necessary addressing timing and counting functions and includes a 1-of-8 decoder 8-channel analog multiplexer sample and hold ramp integrator precision ramp reference and a parator on a single monolithic chip Features Y MPU patible Y Excellent linearity over full temperature range g0 2% maximum Y Typical 300 ms conversion time per channel Y Wide dynamic range includes ground Y Auto-zero and full-scale correction capability Y Ratiometric conversion no precision reference required Y Single-supply operation Y TTL patible Y Does not require access to data bus or address bus Connection Diagram All Packages Ordering Information mercial (0 C s TA s 70 C) ADC9708CCN ADC9708CCJ Military (b55 C s TA s 125 C) ADC9708CMJ Package N16E J16A Package J16A (Top View) Block Diagram TL H 10409 - 2 C1995 National Semiconductor Corporation TL H 10409 TL H 10409 - 1 RRD-B30M115 Printed in U S A Absolute Maximum Ratings (Notes 1 2) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage (VCC) parator Output (Ramp Stop) 18V b0 3V to a18V Analog Input Range b0 3V to a30V Digital Input Range b0 3V to a30V Output Sink Current 10 m A Storage Temperature Range b65 C to a150 C Continuous Total Dissipation (Note 8) Ceramic DIP Package Molded DIP Package 900 m W 1000 m W ESD Susceptibility (Note 9) Pin Temperature Ceramic DIP (Soldering 60 Sec ) Molded DIP (Soldering 10 Sec ) 300 C 260 C Operating Ratings (Notes 1 2) Operating Temperature Range ADC9708CCN ADC9708CCJ ADC9708CMJ 0 C to a70 C b55 C to a125 C Supply Voltage (VCC) Reference Voltage (VREF) (Note 3) Ramp Capacitor (CH) Reference Current (IR) Analog Input...