描述 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.

特性 Features

? 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: ±? LSB and ± 1 LSB
? Single Supply: 5 VDC
? Low Power: 15 mW
? Conversion Time: 40 μs