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AD0803

Intersil
Part Number AD0803
Manufacturer Intersil
Description (AD0802 - AD0804) 8-Bit Microprocessor-Compatible
Published Nov 24, 2009
Detailed Description ADC0802, ADC0803 ADC0804 August 1997 8-Bit, MicroprocessorCompatible, A/D Converters Description The ADC0802 family are...
Datasheet PDF File AD0803 PDF File

AD0803
AD0803

Overview
ADC0802, ADC0803 ADC0804 August 1997 8-Bit, MicroprocessorCompatible, A/D Converters Description The ADC0802 family are CMOS 8-Bit, successive-approximation A/D converters which use a modified potentiometric ladder and are designed to operate with the 8080A control bus via three-state outputs.
These converters appear to the processor as memory locations or I/O ports, and hence no interfacing logic is required.
The differential analog voltage input has good commonmode-rejection and permits offsetting the analog zero-inputvoltage 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 • 80C48 and 80C80/85 Bus Compatible - No Interfacing Logic Required • Conversion Time < 100µs • Easy Interface to Most Microprocessors • Will Operate in a “Stand Alone” Mode • Differential Analog Voltage Inputs • Works with Bandgap Voltage References • TTL Compatible Inputs and Outputs • On-Chip Clock Generator • 0V to 5V Analog Voltage Input Range (Single + 5V Supply) • No Zero-Adjust Required Ordering Information PART NUMBER ADC0802LCN ADC0802LCD ADC0802LD ADC0803LCN ADC0803LCD ADC0803LCWM ADC0803LD ADC0804LCN www.
DataSheet4U.
com ADC0804LCD ADC0804LCWM ERROR ±1/2 LSB ±3/4 LSB ±1 LSB ±1/2 LSB ±3/4 LSB ±1 LSB ±1 LSB ±1 LSB ±1 LSB ±1 LSB EXTERNAL CONDITIONS VREF/2 = 2.
500VDC (No Adjustments) TEMP.
RANGE (oC) 0 to 70 -40 to 85 -55 to 125 PACKAGE 20 Ld PDIP 20 Ld CERDIP 20 Ld CERDIP 20 Ld PDIP 20 Ld CERDIP 20 Ld SOIC 20 Ld CERDIP 20 Ld PDIP 20 Ld CERDIP 20 Ld SOIC PKG.
NO E20.
3 F20.
3 F20.
3 E20.
3 F20.
3 M20.
3 F20.
3 E20.
3 F20.
3 M20.
3 VREF/2 Adjusted for Correct Full Scale Reading 0 to 70 -40 to 85 -40 to 85 -55 to 125 VREF/2 = 2.
500VDC (No Adjustments) 0 to 70 -40 to 85 -40 to 85 Pinout ADC0802, ADC0803, ADC0804 (PDIP, CERDIP) TOP VIEW CS RD WR CLK IN INTR VIN (+) VIN (-) AGND VREF/2 1 2 3 4 5 6 7 8 9 20 V+ OR VREF 19 CLK R Typical Application Schematic 1 2 3 5 11 µP BUS ANY µPROCES...


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