TDA7404DTR

Audio Special Purpose Overview

The TDA7404DTR is a car radio signal processor manufactured by STMicroelectronics, packaged in a 28-SOIC (Tape & Reel) format. It operates on a 7.5V to 10.5V supply and supports an I2C interface for digital control. The device features four stereo inputs, one mono input, four independent speaker outputs, and a subwoofer stereo output. Key electrical parameters include a typical supply current of 20 mA at 9V, a ripple rejection of 60 dB, and a signal-to-noise ratio of 106 dB. It functions within an operating temperature range of -40°C to +85°C.

Audio Special Purpose Feature Summary

• Four stereo inputs and one mono input with programmable gain and AutoZero offset cancellation
• Integrated audio filters including Bass, Treble, and Loudness controls with programmable center frequencies
• Soft-step volume control with 100 dB range and digitally controlled soft-mute functionality
• Four independent speaker outputs and a dedicated subwoofer stereo output

Audio Special Purpose Applications

• Car radio signal processing
• Automotive audio systems requiring digital filter programming
• Multi-channel speaker management in vehicles

Audio Special Purpose Procurement Notes

Verify the TR suffix indicates Tape & Reel packaging rather than Tube packaging found in standard variants. Confirm automotive grade qualification status if required for specific vehicle standards. Check for end-of-life notifications as distribution availability may vary.

Audio Special Purpose Selection Notes

Select this component when designing car radios requiring integrated DSP capabilities with I2C control. Ensure the power supply provides 7.5V to 10.5V. Consider the 28-SOIC package dimensions for PCB layout. Verify that the I2C bus speed does not exceed 500 Kbits/s.

Audio Special Purpose Part Context

This part belongs to the TDA7404 series of audio signal processors. The 'D' suffix denotes the SO-28 package, while 'TR' specifies the Tape & Reel packing method. It is distinct from tube-packaged versions like TDA7404D.

Audio Special Purpose Replacement Considerations

Check for direct pin-compatible alternatives within the same STMicroelectronics audio processor family. Verify that any substitute maintains the 28-SOIC package and I2C interface compatibility.