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ADC0819BCVX
8-Bit Serial I/O A/D Converter with 19-Channel Multiplexer
TL/H/9287
ADC0819
8-Bit
Serial
I/O
A/D
Converter
with
19-Channel
Multiplexer
December 1994
ADC0819 8-Bit Serial I/O A/D Converter
with 19-Channel Multiplexer
General Description
The ADC0819isan 8-Bit successive approximation A/D
converterwith simultaneous serialI/O.The serial input con-
trolsan analog multiplexer which selects from19 input
channelsoran internalhalf scaletest voltage. input sample-and-holdis implementedbya capacitive
reference ladderand sampled data comparator. This allows
the input signalto vary duringthe conversion cycle.
Separate serialI/Oand conversion clock inputsare provid-to facilitatethe interfaceto various microprocessors.
Features Separate asynchronous converter clockand serial data
I/O clock. 19-Channel multiplexer with 5-Bit serial address logic. Built-in sampleand hold function. Ratiometricor absolute voltage referencing.No zeroor full-scale adjust required. Internally addressabletest voltage.0Vto5V input range with single5V power supply. TTL/MOS input/output compatible. 28-pin molded chip carrieror 28-pin moldedDIP
Key Specifications Resolution 8-Bits Total unadjusted error g (/2LSBandg 1LSB Single supply 5VDC Low Power 15 mW Conversion Time 16ms
Connection Diagrams
Molded Chip Carrier(PCC) Package
TL/H/9287–1
Top View
Order Number ADC0819BCV, CCV
SeeNS Package Number V28A
Dual-In-Line Package
TL/H/9287–20
Top View
Order Number ADC0819BCN,CIN
SeeNS Package Number N28B
Functional Diagram
TL/H/9287–2
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
