ADC1038 Datasheet, PDF (1/13 Pages) National Semiconductor (TI) – 10-Bit Serial I/O A/D Converter with Analog Multiplexer

June 1999
ADC1038
10-Bit Serial I/O A/D Converter with Analog Multiplexer
and Track/Hold Function
General Description
The ADC1038 is a 10-bit successive approximation A/D con-
verters with serial I/O. The serial input controls a
single-ended analog multiplexer that selects one of 8 input
channels. The serial output data can be configured into a
left- or right-justified format.
An input track/hold is implemented by a capacitive reference
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 provided
to facilitate the interface to various microprocessors.
Applications
n Engine control
n Process control
n Instrumentation
n Test equipment
Features
n Serial I/O ( MICROWIRE™ compatible)
n Separate asynchronous converter clock and serial data
I/O clock
n Analog input track/hold function
n Ratiometric or absolute voltage referencing
n No zero or full scale adjustment required
n 0V to 5V analog input range with single 5V power
supply
n TTL/MOS input/output compatible
n No missing codes
Key Specifications
n Resolution
n Total unadjusted error
n Single supply
n Power dissipation
n Max. conversion time (f_C= 3 MHz)
n Serial data exchange time (f_S= 1 MHz)
10 bit
±1 LSB (max)
5V ±5%
20 mW (max)
13.7 µs (max)
10 µs (max)
Connection Diagrams
SO Package
DS010556-2
Top View
ADC1038 In NS Package
M20B
Ordering Information
Industrial −40˚C ≤ T_A ≤ +85˚C
ADC1038CIWM
Package
M20B
TRI-STATE^® is a registered trademark of National Semiconductor Corporation.
MICROWIRE™ is a trademark of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS010556
www.national.com