TDA7438D

Audio Special Purpose Overview

The TDA7438D is a two-channel audio tone processor manufactured by STMicroelectronics, designed for automotive applications. It operates within a supply voltage range of 6V to 10.2V and supports an operating temperature range of 0°C to 70°C (TA). The device features an I2C interface for configuration and is housed in a 28-SOIC package with a width of 7.50mm. Classified as an automotive-grade component, it functions as a dedicated audio tone processor suitable for integration into vehicle audio systems requiring surface-mount installation.

Audio Special Purpose Feature Summary

• Two-channel audio tone processing capability
• I2C digital interface for control and configuration
• Automotive grade qualification for vehicle environments
• 28-SOIC surface mount package

Audio Special Purpose Applications

• Automotive audio systems
• Vehicle sound processing units

Audio Special Purpose Procurement Notes

Verify the specific operating temperature range against application requirements, as this variant specifies 0°C to 70°C (TA), which differs from other automotive parts in the series that may support -40°C. Confirm package compatibility with the 28-SOIC footprint. Check current availability status as automotive components may have long lead times or end-of-life notices.

Audio Special Purpose Selection Notes

Select the TDA7438D when a two-channel tone processor with I2C control is required for automotive audio designs. Ensure the thermal environment stays within the 0°C to 70°C limit. Compare with similar models like the TDA7318D if wider temperature ranges (-40°C to 85°C) are needed, noting that the TDA7438D is specified for the narrower commercial/automotive overlap range.

Audio Special Purpose Part Context

This component belongs to STMicroelectronics' family of audio tone processors. It shares functional similarities with parts like the TDA7318D but differs in specific electrical ratings and temperature specifications. The TDA7438D is distinct from power amplifiers such as the HFA80A or HFDA90D, serving purely as a signal processing stage rather than a driver.

Audio Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users should consult official distributor databases for cross-references.