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ADC0801 ADC0802 ADC0803 ADC0804 ADC0805 8-Bit mP Compatible A D Converters December 1994 ADC0801 ADC0802 ADC0803 ADC0804 ADC0805 8-Bit mP Compatible A D Converters General Description The ADC0801 ADC0802 ADC0803 ADC0804 and ADC0805 are CMOS 8-bit successive approximation A D converters that use a differential potentiometric ladder similar to the 256R products These converters are designed to allow operation with the NSC800 and INS8080A derivative control bus with TRI-STATE output latches directly driving the data bus These A Ds appear like memory locations or I O ports to the microprocessor and no interfacing logic is needed Differential analog voltage inputs allow increasing the common-mode rejection and offsetting the analog zero input voltage value In addition the voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of resolution Y Y Y Y Y Y Y Y Y Differential analog voltage inputs Logic inputs and outputs meet both MOS and TTL voltage level specifications Works with 2 5V (LM336) voltage reference On-chip clock generator 0V to 5V analog input voltage range with single 5V supply No zero adjust required 0 3 standard width 20-pin DIP package 20-pin molded chip carrier or small outline package Operates ratiometrically or with 5 VDC 2 5 VDC or analog span adjusted voltage reference Key Specifications Y Y Y Features Y Y Compatible with 8080 mP derivatives no interfacing logic needed - access time - 135 ns Easy interface to all microprocessors or operates ``stand alone'' Resolution Total error Conversion time g LSB g 8 bits LSB and g 1 LSB 100 ms Typical Applications TL H 5671 ­ 1 8080 Interface Error Specification (Includes Full-Scale Zero Error and Non-Linearity) Part Number FullVREF 2 e 2 500 VDC VREF 2 e No Connection Scale (No Adjustments) (No Adjustments) Adjusted LSB g ADC0801 g ADC0802 ADC0803 g ADC0804 ADC0805 TL H 5671­31 TRI-STATE is a registered trademark of National Semiconductor Corp Z-80 is a registered trademark of Zilog Corp C1995 National Semiconductor Corporation LSB LSB g 1 LSB g 1 LSB TL H 5671 RRD-B30M115 Printed in U S A Absolute Maximum Ratings (Notes 1 2) Storage Temperature Range Package Dissipation at TA e 25 C ESD Susceptibility (Note 10) b 65 C to a 150 C If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage (VCC) (Note 3) 6 5V Voltage b 0 3V to a 18V Logic Control Inputs b 0 3V to (VCC a 0 3V) At Other Input and Outputs Lead Temp (Soldering 10 seconds) Dual-In-Line Package (plastic) 260 C Dual-In-Line Package (ceramic) 300 C Surface Mount Package Vapor Phase (60 seconds) Infrared (15 seconds) 215 C 220 C 875 mW 800V Operating Ratings (Notes 1 2) Temperature Range TMINsTAsTMAX ADC0801 02LJ ADC0802LJ 883 b55 CsTAs a 125 C b 40 C s TA s a 85 C ADC0801 02 03 04LCJ b 40 C s TA s a 85 C ADC0801 02 03 05LCN ADC0804LCN 0 CsTAs a 70