ADC0848 - 8-Bit Microprocessor Compatible A/D Converter with Multiplexer Option

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.

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• Easy Interface to All Microprocessors
• Operates Ratiometrically or with 5 V_DC 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 V_DC
• Low Power: 15 mW
• Conversion Time: 40 μs

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