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National Semiconductor - 10-Bit Plus Sign Serial I/O A/D Converters with MUX/ Sample/Hold and Reference

Numéro de référence ADC10834CIN
Description 10-Bit Plus Sign Serial I/O A/D Converters with MUX/ Sample/Hold and Reference
Fabricant National Semiconductor 
Logo National Semiconductor 





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ADC10834CIN fiche technique
December 1994
ADC10831 ADC10832 ADC10834 ADC10838
10-Bit Plus Sign Serial I O A D Converters
with MUX Sample Hold and Reference
General Description
This series of CMOS 10-bit plus sign successive approxima-
tion A D converters features versatile analog input multi-
plexers sample hold and a 2 5V band-gap reference The
1 2 4 or 8-channel multiplexers can be software configured
for single-ended or differential mode of operation
An input sample hold is implemented by a capacitive refer-
ence ladder and sampled-data comparator This allows the
analog input to vary during the A D conversion cycle
In the differential mode valid outputs are obtained even
when the negative inputs are greater than the positive be-
cause of the 10-bit plus sign output data format
The serial I O is configured to comply with the NSC
MICROWIRETM serial data exchange standard for easy in-
terface to the COPSTM and HPCTM families of controllers
and can easily interface with standard shift registers and
microprocessors
Applications
Y Medical instruments
Y Remote instrumentation
Y Test equipment
Features
Y b5V to a5V analog voltage range with g5V supplies
Y Serial I O (MICROWIRE compatible)
Y 1 2 4 or 8-channel differential or single-ended
multiplexer
Y Software or hardware power down
Y Analog input sample hold function
Y Ratiometric or Absolute voltage referencing
Y No zero or full scale adjustment required
Y No missing codes over temperature
Y TTL MOS input output compatible
Y Standard DIP and SO packages
Key Specifications
Y Resolution
Y Dual supply
Y Power dissipation
Y In power down mode
Y Conversion time
Y Sampling rate
Y Band-gap reference
10 bits plus sign
g5V
59 mW (Max)
33 mW
5 ms (Max)
74 kHz (Max)
2 5V g2% (Max)
ADC10838 Simplified Block Diagram
COPSTM HPCTM and MICROWIRETM are trademarks of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL H 11391
TL H 11391 – 1
RRD-B30M75 Printed in U S A

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