ADC0844

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...