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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
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
™ serial data exchange standard for easy interface 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 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 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.
Key Specification
Resolution: 8 bits
Conversion time (fC = 1 MHz): 8μs (max)
Power dissipation: 20mW (max)
Single supply: 5VDC (±5%)
Total unadjusted error: ±½ LSB and ±1LSB
No missing codes over temperature
Applications
Digitizing automotive sensors
Process control monitoring
Remote sensing in noisy environments
Instrumentation
Test systems
Embedded diagnostics
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