ADC08038CIWM

Analog To Digital Converters (ADC) Overview

The ADC08038CIWM is an obsolete 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a configurable input multiplexer supporting up to eight channels, selectable as single-ended, differential, or pseudo-differential. The device operates on a single 5V supply (4.5V to 6.3V) and includes an internal 2.6V band-gap reference. 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 CIWM suffix, and a maximum power dissipation of 20 mW. It utilizes a serial I/O interface compatible with NSC MICROWIRE standards.

Analog To Digital Converters (ADC) Feature Summary

• 8-channel input multiplexer with software-configurable single-ended, differential, and pseudo-differential modes
• Integrated 2.6V band-gap voltage reference
• Serial digital data link requiring minimal I/O pins
• On-chip track/hold function for analog inputs

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) Part Context

The ADC08038CIWM belongs to the ADC0803x family, which also includes the ADC08031, ADC08032, and ADC08034. These devices share the same core SAR architecture and serial interface but differ in channel count and package pinout. The ADC08038 specifically provides the highest channel density within this series with eight analog inputs.

Analog To Digital Converters (ADC) Replacement Considerations

The datasheet identifies the ADC08131, ADC08134, and ADC08138 as alternatives offering specific voltage reference performance over temperature. However, these are distinct part numbers with different performance characteristics rather than direct pin-for-pin replacements.