ADC0800

ADC0800 8-Bit A D Converter February 1995 ADC0800 8-Bit A D Converter General Description The ADC0800 is an 8-bit monolithic A D converter using Pchannel ion-implanted MOS technology It contains a high input impedance comparator 256 series resistors and analog switches control logic and output latches Conversion is performed using a successive approximation technique where the unknown analog voltage is compared to the resistor tie points using analog switches When the appropriate tie point voltage matches the unknown voltage conversion is complete and the digital outputs contain an 8-bit complementary binary word corresponding to the unknown The binary output is TRI-STATE to permit bussing on common data lines The ADC0800PD is specified over b55 C to a 125 C and the ADC0800PCD is specified over 0 C to 70 C Features Y Y Y Y Y Y Y Y Y Y Y Y Y Low cost g 5V 10V input ranges No missing codes Ratiometric conversion TRI-STATE outputs Fast Contains output latches TTL compatible Supply voltages Resolution Linearity Conversion speed Clock range TC e 50 ms 5 VDC and b12 VDC 8 bits g 1 LSB 40 clock periods 50 to 800 kHz Block Diagram TL H 5670 – 1 (00000000 e a full-scale) TRI-STATE is a registered trademark of National Semiconductor Corp C1995 National Semiconductor Corporation TL H 5670 RRD-B30M115 Printed in U S A Absolute Maximum Ratings (Note 1) Power Dissipation (Note 3) ESD Susceptibility (Note 4) Storage Temperature Lead Temperature (Soldering 10 sec ) 875 mW 500V 15...