TDA7297

Overview

The TDA7297 is a dual bridge audio amplifier designed for TV and portable radio applications. It operates within a wide supply voltage range of 6V to 18V, delivering 15W output power per channel into an 8-ohm load. The device features internally fixed gain of 32 dB and supports single input type with two-channel stereo output. Key electrical parameters include a maximum supply current of 2A, total harmonic distortion plus noise of 0.1%, and a quiescent current of 40mA typical. It functions reliably between 0°C and +70°C ambient temperature.

Feature Summary

• Integrated thermal overload protection and short circuit protection mechanisms
• Supports stand-by and mute functions for power management
• Requires minimum external components with no SVR capacitor or bootstrap requirements

Applications

• Television sets
• Portable radios

Procurement Notes

Verify the specific package variant against design requirements, as the TDA7297 series includes different packages such as Multiwatt-15 and PowerSO-20. Confirm that the selected component matches the intended mounting style, whether through-hole or surface mount. Ensure the chosen part number corresponds to the correct pin configuration and thermal characteristics required for the final assembly.

Selection Notes

Select the TDA7297 when a dual bridge amplifier with high efficiency and minimal external component count is required. The internally fixed gain simplifies circuit design by eliminating the need for external feedback networks. Consider the available package options based on thermal dissipation needs and board space constraints, ensuring compatibility with the target application's voltage and load specifications.

Part Context

The TDA7297 belongs to the TDA7297 series of audio amplifiers manufactured by STMicroelectronics. It utilizes Bi20II technology and is housed in a Multiwatt-15 package. This component is distinct from other variants like the TDA7297D, which uses a PowerSO-20 package and may have different power ratings. The series is characterized by its robust protection features and suitability for consumer electronics.

Replacement Considerations

The TDA7297D is a related variant offering similar functionality but in a PowerSO-20 surface-mount package. Designers should verify pinout compatibility and thermal performance differences before substituting. Other family members may exist; ensure the replacement matches the required output power and package type.