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ADC08038BIWM 产品设计参考手册 - TI（德州仪器）
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ADC08038BIWM数据手册
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OBSOLETE
January 15, 2007
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 se-
rial I/O is configured to comply with the NSC MI-
CROWIRE™ serial data exchange standard for easy inter-
face to the COPS™ family of controllers, and can easily
interface with standard shift registers or microprocessors.
The ADC08034 and ADC08038 provide a 2.6V band-gap de-
rived reference. For devices offering guaranteed voltage ref-
erence performance over temperature see ADC08131,
ADC08134 and ADC08138.
A track/hold function allows the analog voltage at the positive
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
■
Digitizing automotive sensors
■
Process control monitoring
■
Remote sensing in noisy environments
■
Instrumentation
■
Test systems
■
Embedded diagnostics
Features
■
Serial digital data link requires few I/O pins
■
Analog input track/hold function
■
2-, 4-, or 8-channel input multiplexer options with address
logic
■
0V to 5V analog input range with single 5V power supply
■
No zero or full scale adjustment required
■
TTL/CMOS input/output compatible
■
On chip 2.6V band-gap reference
■
0.3″ standard width 8-, 14-, or 20-pin DIP package
■
14-, 20-pin small-outline packages
Key Specifications
■
Resolution: 8 bits
■
Conversion time (f
C
= 1 MHz): 8μs (max)
■
Power dissipation: 20mW (max)
■
Single supply: 5V
DC
(±5%)
■
Total unadjusted error: ±½ LSB and ±1LSB
■
No missing codes over temperature
Ordering Information
Industrial (−40°C ≤ T
A
≤ +85°C)
Package
ADC08031CIN N08E
ADC08038CIN N20A
ADC08031CIWM,
ADC08032CIWM, M14B
ADC08034CIWM
ADC08038CIWM M20B
This device is obsolete in all packages.
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
© 2008 National Semiconductor Corporation 10555 www.national.com
10555 Version 6 Revision 6 Print Date/Time: 2008/01/10 20:18:10
ADC08031/ADC08032/ADC08034/ADC08038 8-Bit High-Speed Serial I/O A/D Converters with
Multiplexer Options, Voltage Reference, and Track/Hold Function
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