ADC0844

ADC0844, ADC0848 www.ti.com SNAS523D – JUNE 1999 – REVISED MARCH 2013 ADC0844/ADC0848 8-Bit μP Compatible A/D Converters with Multiplexer Options Check for Samples: ADC0844, ADC0848 FEATURES 1 2 Easy Interface to All Microprocessors Operates Ratiometrically or with 5 VDC Voltage Reference No Zero or Full-Scale Adjust Required 4-Channel or 8-Channel Multiplexer with Address Logic Internal Clock 0V to 5V Input Range with Single 5V Power Supply Standard Width 20-Pin or 24-Pin PDIP 28 Pin PLCC Package KEY SPECIFICATIONS Resolution: 8 Bits Total Unadjusted Error: ±½ LSB and ± 1 LSB Single Supply: 5 VDC Low Power: 15 mW Conversion Time: 40 μs 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. Block Diagram * ADC0848...