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ADC1038CIN
10-Bit Serial I/O A/D Converters with Analog Multiplexer and Track/hold Function
ADC1038
10-Bit Serial I/O A/D Converter with Analog Multiplexer
and Track/Hold Function
General DescriptionThe ADC1038is a10-bit successive approximationA/Dcon-
verters with serial I/O. The serial input controlsa
single-ended analog multiplexer that selectsoneof8 input
channels. The serial output datacanbe configuredintoa
left-or right-justified format. input track/holdis implementedbya capacitive reference
ladderand sampled-data comparator. Thisallowsthe analog
inputto vary duringtheA/D conversion cycle.
Separate serialI/Oand conversion clock inputsare provided facilitatethe interfaceto various microprocessors.
Applications Engine control Process control Instrumentation Test equipment
Features SerialI/O( MICROWIRE™ compatible) Separate asynchronous converter clockand serial data
I/O clock Analog input track/hold function Ratiometricor absolute voltage referencingNo zeroorfull scale adjustment required0Vto5V analog input range with single5V power
supply TTL/MOS input/output compatibleNo missing codes
Key Specifications Resolution 10bit Total unadjusted error ±1 LSB (max) Single supply 5V ±5% Power dissipation 20mW (max) Max. conversion time (fC=3 MHz) 13.7μs (max) Serial data exchange time(fS=1 MHz) 10μs (max)
Connection Diagrams
Ordering Information
Industrial −40˚C≤
TA≤
+85˚C PackageADC1038CIWM M20B
TRI-STATE®isa registeredtrademark ofNationalSemiconductorCorporation.
MICROWIRE™ isatrademarkofNationalSemiconductor Corporation.
PackageDS010556-2
Top View
ADC1038InNS Package
M20BJune 1999
ADC1038
10-Bit
Serial
I/O
A/D
Converter
with
Analog
Multiplexer
and
rack/Hold
Function©1999 National Semiconductor Corporation DS010556