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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