TDA7448

Audio Special Purpose Overview

The TDA7448 is a six-channel volume controller designed for multi-channel audio systems. It utilizes Bipolar/CMOS technology to achieve low distortion, low noise, and DC stepping. The device provides an attenuation range of 0 to -79dB with 1.0dB step resolution. All functions are programmable via a two-wire I2C serial bus interface. It operates on a supply voltage of 4.75V to 10V and supports surface mount installation in a 20-SOIC package.

Audio Special Purpose Feature Summary

• Six independent input and output channels
• Volume attenuation range from 0 to -79dB in 1.0dB steps
• Programmable control via standard I2C serial bus
• Low distortion (0.1% max) and high signal-to-noise ratio (100dB)

Audio Special Purpose Applications

• Multi-channel audio systems
• Professional audio equipment

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix when purchasing. The base part number TDA7448 corresponds to the SO-20 tube package. The variant TDA744813TR uses a tape and reel package. Confirm the required packaging format matches the production needs before ordering.

Audio Special Purpose Selection Notes

Select this component for applications requiring precise digital volume control across multiple audio channels. Ensure the design accommodates the 4.75V to 10V supply voltage range. Verify that the microprocessor can drive the I2C interface with appropriate pull-up resistors as specified in the datasheet.

Audio Special Purpose Part Context

This component belongs to the TDA7448 family of audio processors. Related variants include TDA744813TR, which shares the same core functionality but differs in packaging. Other family members like TDA7449 offer different channel counts or package types.

Audio Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult STMicroelectronics for current alternative recommendations if the TDA7448 is discontinued or unavailable.