8-Bit uP Compatible A/D Converters
ADC0844/ADC0848 8-Bit µP Compatible A/D Converters with Multiplexer Options
June 1999
ADC0844/ADC0848 8-Bit µP Compati...
Description
ADC0844/ADC0848 8-Bit µP Compatible A/D Converters with Multiplexer Options
June 1999
ADC0844/ADC0848 8-Bit µP Compatible A/D Converters with Multiplexer Options
General Description
The ADC0844 and ADC0848 are CMOS 8-bit successive approximation A/D converters with versatile analog input multiplexers. The 4-channel or 8-channel multiplexers can be software configured for single-ended, differential or pseudo-differential modes of operation. The differential mode provides low frequency input common mode rejection and allows offsetting the analog range of the converter. In addition, the A/D’s reference can be adjusted enabling the conversion of reduced analog ranges with 8-bit resolution. The A/Ds are designed to operate from the control bus of a wide variety of microprocessors. TRI-STATE ® output latches that directly drive the data bus permit the A/Ds to be configured as memory locations or I/O devices to the microprocessor with no interface logic necessary.
Features
n Easy interface to all microprocessors n Operates ratiometrically or with 5 VDC voltage reference n No zero or full-scale adjust required n 4-channel or 8-channel multiplexer with address logic n Internal clock n 0V to 5V input range with single 5V power supply n 0.3" standard width 20-pin or 24-pin DIP n 28 Pin Molded Chip Carrier Package
Key Specifications
n n n n n Resolution Total Unadjusted Error Single Supply Low Power Conversion Time 8 Bits
± 1⁄2 LSB and ± 1 LSB
5 VDC 15 mW 40 µs
Block and Connection...
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