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ADC0844 Просмотр технического описания (PDF) - National ->Texas Instruments

Номер в каталогеADC0844 National-Semiconductor
National ->Texas Instruments National-Semiconductor
Компоненты Описание8-Bit μP Compatible A/D Converters with Multiplexer Options
ADC0844 Datasheet PDF : 24 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
December 2, 2008
ADC0844/ADC0848
8-Bit μP Compatible A/D Converters with Multiplexer
Options
General Description
The ADC0844 and ADC0848 are CMOS 8-bit successive ap-
proximation A/D converters with versatile analog input multi-
plexers. 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 config-
ured as memory locations or I/O devices to the microproces-
sor with no interface logic necessary.
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
0.3″ standard width 20-pin or 24-pin DIP
28 Pin Molded Chip Carrier Package
Key Specifications
Resolution
Total Unadjusted Error
Single Supply
Low Power
Conversion Time
8 Bits
±½ LSB and ± 1 LSB
5 VDC
15 mW
40 μs
Block Diagram
* ADC0848 shown in DIP Package CH5-CH8 not included on the ADC0844
© 2008 National Semiconductor Corporation 5016
501601
www.national.com
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