TEA6422

Analog Switches - Special Purpose Overview

The TEA6422 is a bus-controlled audio matrix switch manufactured by STMicroelectronics. It routes six stereo inputs to three stereo outputs, with configuration managed via the I²C serial bus. The device operates on a supply voltage ranging from 8V to 11V and supports two distinct chip addresses for cascading applications. Key electrical specifications include a signal-to-noise ratio of 110 dB, channel separation up to 90 dB, and an input noise level of 3 µV within a 20 Hz to 20 kHz bandwidth. The unit provides gain control options of 0 dB or mute for each output and features full ESD protection.

Analog Switches - Special Purpose Feature Summary

• Configurable routing of six stereo inputs to three stereo outputs using I²C commands
• Supports cascading through dual addressable configurations
• Integrated gain control allowing selection between 0 dB operation and mute states
• High-fidelity performance characterized by low distortion and wide dynamic range

Analog Switches - Special Purpose Applications

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

Analog Switches - Special Purpose Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet pinouts. Confirm package type matches requirements, as the TEA6422 is available in SDIP24 and SO28 variants. Ensure the ordering suffix aligns with the desired physical footprint. Validate that the specific batch meets the required operating temperature range of 0°C to +70°C before integration into final assemblies.

Analog Switches - Special Purpose Selection Notes

Select the TEA6422 when a compact solution is needed to manage multiple stereo audio sources without external multiplexers. Consider the SO28 package for surface-mount designs requiring a smaller footprint compared to the SDIP24 variant. Verify that the system power supply remains stable between 8V and 11V to maintain optimal signal-to-noise ratios and prevent clipping at the specified load resistance.

Analog Switches - Special Purpose Part Context

The TEA6422 belongs to a family of bus-controlled audio switches designed for high-channel-count audio routing. It serves as a direct replacement for legacy analog matrix switches in professional audio environments. The device integrates internal reference voltages and buffer stages, reducing the need for external passive components during implementation.

Analog Switches - Special Purpose Replacement Considerations

No public confirmed substitute part numbers are available.