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ADC0844 Fiches technique(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce ADC0844
Description  8-Bit uP Compatible A/D Converters with Multiplexer Options
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

ADC0844 Fiches technique(HTML) 1 Page - National Semiconductor (TI)

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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
n Easy interface to all microprocessors
n Operates ratiometrically or with 5 VDC
voltage reference
n No zero or full-scale adjust required
n 4-channel or 8-channel multiplexer with address logic
n Internal clock
n 0V to 5V input range with single 5V power supply
n 0.3" standard width 20-pin or 24-pin DIP
n 28 Pin Molded Chip Carrier Package
Key Specifications
n Resolution
8 Bits
n Total Unadjusted Error
±12 LSB and ± 1 LSB
n Single Supply
5 V
DC
n Low Power
15 mW
n Conversion Time
40 µs
Block and Connection Diagrams
TRI-STATE® is a registered trademark of National Semiconductor Corp.
DS005016-1
*ADC0848 shown in DIP Package CH5-CH8 not included on the ADC0844
June 1999
© 1999 National Semiconductor Corporation
DS005016
www.national.com


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