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ADC08238BIN Datasheet(数据表) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件型号  ADC08238BIN
说明  8-Bit 2 ms Serial I/O A/D Converters with MUX, Reference, and Track/Hold
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 

 
 1 page
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TLH11015
December 1994
ADC08231ADC08234ADC08238 8-Bit 2 ms Serial IO
AD Converters with MUX Reference and TrackHold
General Description
The ADC08231ADC08234ADC08238 are 8-bit succes-
sive approximation AD converters with serial IO and con-
figurable input multiplexers with up to 8 channels The serial
IO is configured to comply with the NSC MICROWIRETM
serial data exchange standard for easy interface to the
COPSTM family of controllers and can easily interface with
standard shift registers or microprocessors
Designed for high-speedlow-power applications the devic-
es are capable of a fast 2 ms conversion when used with a
4 MHz clock
All three devices provide a 25V band-gap derived reference
with guaranteed performance over temperature
A trackhold function allows the analog voltage at the posi-
tive input to vary during the actual AD 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
High-speed data acquisition
Y
Digitizing automotive sensors
Y
Process controlmonitoring
Y
Remote sensing in noisy environments
Y
Disk drives
Y
Portable instrumentation
Y
Test systems
Features
Y
Serial digital data link requires few IO pins
Y
Analog input trackhold function
Y
4- or 8-channel input multiplexer options with address
logic
Y
On-chip 25V band-gap reference (g2% over tempera-
ture guaranteed)
Y
No zero or full scale adjustment required
Y
TTLCMOS inputoutput compatible
Y
0V to 5V analog input range with single 5V power
supply
Y
Pin compatible with Industry-Standards ADC083148
Key Specifications
Y
Resolution
8 Bits
Y
Conversion time (fC e 4 MHz)
2 ms (Max)
Y
Power dissipation
20 mW (Max)
Y
Single supply
5 VDC (g5%)
Y
Total unadjusted error
g
LSB and g1 LSB
Y
Linearity Error (VREF e 25V)
g
LSB
Y
No missing codes (over temperature)
Y
On-board Reference
a
25V g15% (Max)
ADC08238 Simplified Block Diagram
TLH11015 – 4
TRI-STATE
is a registered trademark of National Semiconductor Corporation
COPSTM microcontrollers and MICROWIRETM are trademarks of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M75Printed in U S A




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