ADC0844 Datasheet, PDF (1/24 Pages) National Semiconductor (TI) – 8-Bit uP Compatible A/D Converters with Multiplexer Options

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
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•2 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
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 shown in PDIP Package CH5-CH8 not included on the ADC0844
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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