ADC1034 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – 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 ADC1034 and ADC1038 are 10-bit succes-
sive approximation A D converters with serial I O The seri-
al input for the ADC1034 and ADC1038 controls a single-
ended analog multiplexer that selects one of 4 input chan-
nels (ADC1034) or one of 8 input channels (ADC1038) The
ADC1034 and ADC1038 serial output data can be config-
ured into a left- or right-justified format
An input track 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
Separate serial I O and conversion clock inputs are provid-
ed to facilitate the interface to various microprocessors
Applications
Y _{Engine control}
Y _{Process control}
Y _{Instrumentation}
Y _{Test equipment}
TRI-STATE is a registered trademark of National Semiconductor Corporation
MICROWIRETM is a trademark of National Semiconductor Corporation
Features
Y _{Serial I O (MICROWIRE}TM _compatible)
Y _{Separate asynchronous converter clock and serial data}
I O clock
Y _{Analog input track hold function}
Y _{Ratiometric or absolute voltage referencing}
Y _{No zero or full scale adjustment required}
Y _{0V to 5V analog input range with single 5V power}
supply
Y _{TTL MOS input output compatible}
Y _{No missing codes}
Key Specifications
Y _Resolution
10 bits
Y _{Total unadjusted error}
g1 LSB (max)
Y _{Single supply}
5V g5%
Y _{Power dissipation}
20 mW (max)
Y _{Max conversion time (fC} e _{3 MHz)}
13 7 ms (max)
Y _{Serial data exchange time (fS} e _{1 MHz) 10 ms (max)}
Connection Diagrams
Dual-In-Line and SO Packages
TL H 10556–4
Top View
ADC1031 In NS Package N08E
Ordering Information
TL H 10556 – 3
Top View
ADC1034 In NS Packages
J16A M16B or N16E
Industrial b40 C ^s T_A ^s a85 C
ADC1031CIN
ADC1034CIN
ADC1034CIWM
ADC1038CIN
ADC1038CIWM
Military b55 C ^s T_A ^s a125 C
ADC1034CMJ
ADC1038CMJ
Package
N08E
N16E
M16B
N20A
M20B
Package
J16A
J20A
TL H 10556 – 2
Top View
ADC1038 In NS Packages
J20A M20B or N20A
C1995 National Semiconductor Corporation TL H 10556
RRD-B30M75 Printed in U S A