Texas Instruments (TI) has recently introduced the TAS5727, a 25 W digital audio power amplifier designed to drive stereo bridged speakers. This new device offers a 32% reduction in RDS(on) compared to its predecessor, significantly lowering the overall case temperature by 20%. This improvement not only enhances thermal performance but also enables ultra-thin designs that were previously unattainable.
The TAS5727 features dual-band dynamic range compression (DRC), which allows audio processing in two distinct frequency bands. This capability helps overcome the sound quality limitations of small speakers and can be seamlessly integrated into most digital audio processors, such as the TMS320DA708. The DRC function can also act as a power limiter for speaker protection and for night listening modes, offering added flexibility for designers.
Additionally, the TAS5727 includes 18 programmable biquad filters that support speaker equalization and other advanced audio processing features. It operates at high efficiency in Class D mode without the need for heat sinks, making it ideal for compact and energy-efficient systems.
Availability of the TAS5727 is now open, with the device available in a surface-mount 48-pin HTQFP package. For developers, TI provides a graphical development environment for the TAS57xx series, allowing users to program the TAS5727 without writing code. This tool simplifies the development process, enabling efficient and intuitive programming for designers of all experience levels.
The software supports graphical development of audio streams, which can then be downloaded directly to the device during manufacturing. To learn more or to order the software, visit the official TI website.
Designers can also evaluate the TAS5727 using the TAS5727EVM, which is now available. This evaluation module makes it easier to test and integrate the amplifier into various applications.
The TAS5727 is compatible with the TI CC8520 PurePath Wireless Audio System-on-Chip (SoC), making it an excellent choice for thin flat-panel TVs. The CC8520 delivers a reliable wireless audio link for 16-bit 44.1/48 KHz CD-quality audio without any noise or loss. It can control and configure the TAS5727 via I2C and can wirelessly send digital audio data as I2S output directly to the amplifier.
For easy prototyping of wireless speakers, the TAS5727EVM development kit can be connected to the CC8520 development kit. To explore more about PurePath Wireless Audio, visit: TI's PurePath Wireless Audio page.
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