ADC0803LCN National Semiconductor 8-Bit µP(8080) Compatible CMOS A/D Converter For Sale
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ADC0803LCN National Semiconductor 8-Bit µP(8080) Compatible CMOS A/D Converter:
$4.90
ADC0803LCN
National Semiconductor 8-Bit µP(8080) Compatible CMOS A/D Converter
DESCRIPTIONThe ADC0801, ADC0802, ADC0803, ADC0804 andADC0805 are CMOS 8-bit successive approximationA/D converters that use a differential potentiometricladder — similar to the 256R products. Theseconverters are designed to allow operation with theNSC800 and INS8080A derivative control bus withTRI-STATE output latches directly driving the databus. These A/Ds appear like memory locations or I/Oports to the microprocessor and no interfacing logic isneeded.Differential analog voltage inputs allow increasing thecommon-mode rejection and offsetting the analogzero input voltage value. In addition, the voltagereference input can be adjusted to allow encodingany smaller analog voltage span to the full 8 bits ofresolution.Compatible with 8080 µP derivatives – nointerfacing logic needed – access time 135 ns
Easy interface to all microprocessors, oroperates “stand alone”Differential analog voltage inputsLogic inputs and outputs meet both MOS andTTL voltage level specificationsWorks with 2.5V (LM336) voltage referenceOn-chip clock generator• 0V to 5V analog input voltage range withsingle 5V supplyNo zero adjust requiredOperates ratiometrically or with 5 VDC, 2.5 VDC,or analog span adjusted voltage referenceKEY SPECIFICATIONS
Resolution: 8 BitsTotal error: ±1/4 LSB, ±1/2 LSB and ±1 LSBConversion Time: 100 µs
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