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ADC0844BCN 数据手册 - National Semiconductor（美国国家半导体）
制造商:
National Semiconductor（美国国家半导体）
分类:
主动器件
封装:
DIP-20
描述:
与多路选择8位向上兼容A / D转换器 8-Bit uP Compatible A/D Converters with Multiplexer Options
Pictures:
3D模型
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ADC0844BCN数据手册
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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 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
■
0.3″ standard width 20-pin or 24-pin DIP
■
28 Pin Molded Chip Carrier 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
Block Diagram
501601
* ADC0848 shown in DIP Package CH5-CH8 not included on the ADC0844
© 2008 National Semiconductor Corporation 5016 www.national.com
ADC0844/ADC0848 8-Bit μP Compatible A/D Converters with Multiplexer Options
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