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ADC1034
10-Bit Serial I/O A/D Converters with Analog Multiplexer and Track/Hold Function
TL/H/10556
ADC1031/ADC1034/ADC1038
10-Bit
Serial
I/O
A/D
Converters
with
Analog
Multiplexer
and
Track/Hold
Function
January 1995
ADC1031/ADC1034/ADC1038 10-Bit Serial
I/O A/D Converters with Analog Multiplexer
and Track/Hold Function
General Description
The ADC1031, ADC1034and ADC1038are 10-bit succes-
sive approximation A/D converters with serial I/O.The seri- input,forthe ADC1034and ADC1038, controlsa single-
ended analog multiplexer that selectsoneof4 input chan-
nels (ADC1034)oroneof8 input channels (ADC1038).The
ADC1034 and ADC1038 serial output data canbe config-
uredintoaleft-or right-justified format. input track/holdis implementedbya capacitive refer-
ence ladderand sampled-data comparator. This allowsthe
analog inputto vary duringthe A/D conversion cycle.
Separate serialI/Oand conversion clock inputsare provid-to facilitatethe interfaceto various microprocessors.
Applications Engine control Process control Instrumentation Test equipment
Features SerialI/O (MICROWIRETM compatible) Separate asynchronous converter clock and 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 10bits Total unadjusted error g1 LSB (max) Single supply 5V g5% Power dissipation 20 mW (max) Max. conversion time(fCe3 MHz) 13.7ms (max) Serial data exchange time(fSe1 MHz) 10ms (max)
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
MICROWIRETMis atrademarkof National SemiconductorCorporation.
Connection Diagrams
Dual-In-LineandSO Packages
TL/H/10556–4
Top View
ADC1031InNS Package N08E
TL/H/10556–3
Top View
ADC1034InNS Packages
J16A,M16B orN16E
TL/H/10556–2
TopView
ADC1038InNS Packages
J20A, M20Bor N20AOrdering Information
Industrial b40§CsTAs a85§C Package
ADC1031CIN N08E
ADC1034CIN N16E
ADC1034CIWM M16B
ADC1038CIN N20A
ADC1038CIWM M20B
Military b55§CsTAs a125§C Package
ADC1034CMJ J16A
ADC1038CMJ J20A
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.
