Rainbow Electronics ADC08038 - Manual

TL H 10555
ADC08031ADC08032ADC08034ADC08038
8-Bit
High-Speed
Serial
IO
AD
Converters
with
Multiplexer
Options
Voltage
Reference
and
TrackHold
Function
January 1995
ADC08031 ADC08032 ADC08034 ADC08038 8-Bit
High-Speed Serial I O A D Converters with Multiplexer
Options Voltage Reference and Track Hold Function
General Description
The ADC08031 ADC08032 ADC08034 ADC08038 are
8-bit successive approximation A D converters with serial I
O and configurable input multiplexers with up to 8 channels
The serial I O is configured to comply with the NSC
MICROWIRE
TM serial data exchange standard for easy in-
terface to the COPS TM family of controllers and can easily
interface with standard shift registers or microprocessors
The ADC08034 and ADC08038 provide a 2 6V band-gap
derived reference For devices offering guaranteed voltage
reference performance over temperature see ADC08131
ADC08134 and ADC08138
A track hold function allows the analog voltage at the posi-
tive input to vary during the actual A D conversion
The analog inputs can be configured to operate in various
combinations of single-ended differential or pseudo-differ-
ential modes In addition input voltage spans as small as 1V
can be accommodated
Applications
Y Digitizing automotive sensors
Y Process control monitoring
Y Remote sensing in noisy environments
Y Instrumentation
Y Test systems
Y Embedded diagnostics
Features
Y Serial digital data link requires few I O pins
Y Analog input track hold function
Y 2- 4- or 8-channel input multiplexer options with ad-
dress logic
Y 0V to 5V analog input range with single 5V power
supply
Y No zero or full scale adjustment required
Y TTL CMOS input output compatible
Y On chip 2 6V band-gap reference
Y 0 3 standard width 8- 14- or 20-pin DIP package
Y 14- 20-pin small-outline packages
Key Specifications
Y Resolution 8 bits
Y Conversion time (f C e 1 MHz) 8ms (max)
Y Power dissipation 20mW (max)
Y Single supply 5V
DC
( g 5%)
Y Total unadjusted error g LSB and g 1LSB
Y No missing codes over temperature
TRI-STATE is a registered trademark of National Semiconductor Corporation
COPS TM microcontrollers and MICROWIRE TM are trademarks of National Semiconductor
Corporation
Ordering Information
Industrial (b40 C s T
A s a 85 C) Package
ADC08031BIN ADC08031CIN N08E
ADC08032BIN ADC08032CIN N08E
ADC08034BIN ADC08034CIN N14A
ADC08038BIN ADC08038CIN N20A
ADC08031BIWM ADC08031CIWM
ADC08032BIWM ADC08032CIWM
M14B
ADC08034BIWM ADC08034CIWM
ADC08038BIWM ADC08038CIWM M20B
C1995 National Semiconductor Corporation RRD-B30M75 Printed in U S A