ADC08031CIWMX

Analog To Digital Converters (ADC) Overview

The ADC08031CIWMX is an obsolete 8-bit successive approximation analog-to-digital converter manufactured by Texas Instruments. It features a single-channel serial I/O interface compatible with NSC MICROWIRE standards, requiring minimal processor pins. The device operates on a single 5V supply (4.5V to 6.3V) and includes an internal track-and-hold function. It is housed in a 14-pin SOIC package. Key electrical specifications include a maximum conversion time of 8 μs at a 1 MHz clock frequency, a total unadjusted error of ±1 LSB for the 'C' grade, and power dissipation limited to 20 mW.

Analog To Digital Converters (ADC) Feature Summary

• 8-bit SAR architecture with integrated sample-and-hold circuit
• Serial digital data link compatible with MICROWIRE standard
• Single 5VDC supply operation with 0V to 5V input range
• Internal track/hold function eliminates external hold capacitors

Analog To Digital Converters (ADC) Applications

• Digitizing automotive sensors
• Process control monitoring systems
• Remote sensing in noisy environments
• Embedded diagnostics applications

Analog To Digital Converters (ADC) Procurement Notes

This component is officially classified as obsolete by Texas Instruments. Verification of availability should focus on distributor surplus or secondary market sources rather than direct manufacturer production. Ensure the specific CIWM suffix matches the required 14-pin SOIC package and industrial temperature rating (-40°C to +85°C).

Analog To Digital Converters (ADC) Selection Notes

Select this part only if a single-channel 8-bit resolution with serial interface is sufficient. Note that the ADC08031 lacks the multiplexer options found in the ADC08032/4/8 variants. Verify that the system can accommodate the 8 μs maximum conversion latency and that the serial timing requirements align with the host microcontroller's capabilities.

Analog To Digital Converters (ADC) Part Context

The ADC08031CIWMX belongs to the ADC0803x family, which also includes models with 2, 4, or 8 channel multiplexers. Unlike the ADC08034 and ADC08038, the ADC08031 does not include an internal band-gap voltage reference. The 'C' designation indicates the commercial/industrial temperature grade with ±1 LSB total unadjusted error, while 'IWM' specifies the 14-pin SOIC wide package.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the device is obsolete, engineers must evaluate alternative 8-bit serial ADCs from current product lines, ensuring compatibility with existing serial protocols and pin configurations.