ADC1038CIWM

Analog To Digital Converters (ADC) Overview

The ADC1038CIWM is a 10-bit successive approximation analog-to-digital converter manufactured by Texas Instruments. It features an integrated single-ended analog multiplexer with eight selectable input channels and a track/hold function. The device utilizes serial I/O compatible with MICROWIRE protocols, supporting separate asynchronous conversion and data clocks. It operates on a single 5V supply (4.75V to 5.25V) with a maximum power dissipation of 20 mW. The component provides ratiometric or absolute voltage referencing capabilities and ensures no missing codes across its operating temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 10-bit resolution with total unadjusted error of ±1 LSB (max)
• Integrated 8-channel analog multiplexer with track/hold
• Serial I/O interface compatible with MICROWIRE standard
• Separate asynchronous CCLK and SCLK inputs for flexible microprocessor interfacing

Analog To Digital Converters (ADC) Applications

• Engine control systems
• Process control instrumentation
• General-purpose test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the manufacturer origin as this component was originally developed by National Semiconductor before acquisition by Texas Instruments. Confirm that the specific package variant matches the required surface-mount SOIC footprint. Ensure design compliance with the specified 4.75V to 5.25V DC supply voltage limits to maintain accuracy specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-pin-count solution for multi-channel signal acquisition is required. The internal multiplexer reduces external switching hardware. Designers must account for the 4.5 SCLK cycle acquisition window; source impedances should remain below 1 kΩ to ensure proper settling. Verify that the system clock frequencies align with the minimum and maximum limits for CCLK and SCLK.

Analog To Digital Converters (ADC) Part Context

The ADC1038 belongs to the broader family of serial input A/D converters designed for industrial monitoring. It serves as a bridge between analog sensor signals and digital processing units in environments requiring moderate speed and resolution. The device distinguishes itself through the integration of the multiplexer and track/hold circuitry within a compact 20-pin SOIC package.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes include other 10-bit serial ADCs from the same product lineage, such as the ADC1031 for single-channel applications or the ADC1032 for dual-channel requirements. Cross-reference pinouts carefully when replacing with devices from different manufacturers due to potential interface protocol variations.