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ADC08131 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. ADC08131
Description  8-Bit High-Speed Serial I/O A/D Converters with Multiplexer Options, Voltage Reference, and Track/Hold Function
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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ADC08131/ADC08134/ADC08138
8-Bit High-Speed Serial I/O A/D Converters with
Multiplexer Options, Voltage Reference, and Track/Hold
Function
General Description
The ADC08131/ADC08134/ADC08138 are 8-bit successive
approximation A/D converters with serial I/O and config-
urable input multiplexers with up to 8 channels. The serial
I/O is configured to comply with the NSC MICROWIREse-
rial data exchange standard for easy interface to the
COPSfamily of controllers, and can easily interface with
standard shift registers or microprocessors.
All three devices provide a 2.5V band-gap derived reference
with guaranteed performance over temperature.
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-differential modes. In addition, input voltage spans
as small as 1V can be accommodated.
Applications
n Digitizing automotive sensors
n Process control/monitoring
n Remote sensing in noisy environments
n Embedded diagnostics
Features
n Serial digital data link requires few I/O pins
n Analog input track/hold function
n 4- or 8-channel input multiplexer options with address
logic
n On-chip 2.5V band-gap reference (±2% over
temperature guaranteed)
n No zero or full scale adjustment required
n TTL/CMOS input/output compatible
n 0V to 5V analog input range with single 5V power
supply
Key Specifications
n Resolution
8 Bits
n Conversion time (fC = 1 MHz)
8 µs (Max)
n Power dissipation
20 mW (Max)
n Single supply
5 V
DC (±5%)
n Total unadjusted error
±12 LSB and ±1 LSB
n Linearity Error (VREF = 2.5V)
±12 LSB
n No missing codes (over temperature)
n On-board Reference
+2.5V ±1.5% (Max)
Ordering Information
Industrial
Package
(−40˚C
≤ T
A ≤ +85˚C)
ADC08131CIWM
M14B
ADC08134CIWM
M14B
ADC08138CIWM
M20B
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
COPSmicrocontrollers and MICROWIREare trademarks of National Semiconductor Corporation.
June 1999
© 1999 National Semiconductor Corporation
DS010749
www.national.com




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