TEA6420DT

Analog Switches - Special Purpose Overview

The TEA6420DT is a bus-controlled audio matrix switch manufactured by STMicroelectronics. It routes five stereo audio inputs to four stereo outputs via an I2C serial bus interface. The device supports gain control settings of 0, 2, 4, and 6 dB per output, alongside a mute function. Electrical characteristics include a supply voltage range of 8V to 10.2V, a signal-to-noise ratio of 110 dB, and distortion below 0.05%. It operates within an ambient temperature range of 0°C to +70°C and is available in a 24-pin plastic DIP package.

Analog Switches - Special Purpose Feature Summary

• Switches five stereo audio inputs across four stereo outputs using an I2C serial bus interface.
• Provides programmable gain control with selectable levels of 0, 2, 4, or 6 dB for each output channel.
• Features very low noise and distortion specifications suitable for high-fidelity audio applications.

Analog Switches - Special Purpose Applications

• Audio matrix switching systems
• Multi-zone audio distribution networks
• Professional audio routing equipment

Analog Switches - Special Purpose Procurement Notes

Verify the specific package variant when ordering, as the datasheet lists TEA6420D for SO28 and TEA6420 for SDIP24. Confirm that the TEA6420DT designation aligns with your required physical footprint and pin configuration before finalizing procurement. Ensure compatibility with standard I2C bus protocols for system integration.

Analog Switches - Special Purpose Selection Notes

Select this component for applications requiring flexible routing of multiple stereo sources to different destinations. The integrated gain control eliminates the need for external amplification stages for level adjustment. Verify that the operating environment remains within the specified 0°C to +70°C temperature range to ensure reliable performance.

Analog Switches - Special Purpose Part Context

This component belongs to the family of bus-controlled audio switches designed for multi-channel audio management. It allows centralized digital control over analog audio paths, simplifying system architecture compared to mechanical switching solutions. The I2C interface enables compact design and easy integration with microcontrollers.

Analog Switches - Special Purpose Replacement Considerations

Check for direct substitutes such as the TEA6420D if the SO28 package is preferred over the SDIP24 version. Verify pinout compatibility and electrical specifications against alternative matrix switches from other manufacturers before implementation.

Analog Switches - Special Purpose FAQ

How many distinct chip addresses are supported?

The device supports two different addresses, allowing up to two units to be cascaded on the same I2C bus.

What is the default state after power-on reset?

After power-on reset, input 5 is selected for all outputs with a gain setting of 0 dB.

What is the maximum supply voltage?

The absolute maximum supply voltage (VCC) is 12 V, though the typical operating range is 8 V to 10.2 V.