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ADC0803LCJ Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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ADC0803LCJ Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 41 page ADC0801/ADC0802/ADC0803/ADC0804/ADC0805 8-Bit µP 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 di- rectly driving the data bus. These A/Ds appear like memory locations or I/O ports to the microprocessor and no interfac- ing 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. Features n Compatible with 8080 µP derivatives — no interfacing logic needed - access time - 135 ns n Easy interface to all microprocessors, or operates “stand alone” n Differential analog voltage inputs n Logic inputs and outputs meet both MOS and TTL voltage level specifications n Works with 2.5V (LM336) voltage reference n On-chip clock generator n 0V to 5V analog input voltage range with single 5V supply n No zero adjust required n 0.3" standard width 20-pin DIP package n 20-pin molded chip carrier or small outline package n Operates ratiometrically or with 5 VDC, 2.5 VDC,or analog span adjusted voltage reference Key Specifications n Resolution 8 bits n Total error ±1⁄4 LSB, ±1⁄2 LSB and ±1 LSB n Conversion time 100 µs Connection Diagram Ordering Information TEMP RANGE 0˚C TO 70˚C 0˚C TO 70˚C −40˚C TO +85˚C ±1⁄4 Bit Adjusted ADC0801LCN ERROR ±1⁄2 Bit Unadjusted ADC0802LCWM ADC0802LCN ±1⁄2 Bit Adjusted ADC0803LCN ±1Bit Unadjusted ADC0804LCWM ADC0804LCN ADC0805LCN/ADC0804LCJ PACKAGE OUTLINE M20B — Small Outline N20A — Molded DIP TRI-STATE® is a registered trademark of National Semiconductor Corp. Z-80® is a registered trademark of Zilog Corp. ADC080X Dual-In-Line and Small Outline (SO) Packages DS005671-30 See Ordering Information November 1999 © 1999 National Semiconductor Corporation DS005671 www.national.com |
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