Deeper, Richer and Louder Audio from Smart Amplifier
Texas Instruments (TI) has introduced a low-power smart amplifier that allows designers to develop next-generation smartphones with industry-leading audio quality at peak volumes while maximizing battery efficiency. The TAS2555 Class-H audio amplifier with integrated speaker protection uses back electromotive force and low power of 5.7W to produce bigger sound from small devices. TI is the first in the industry to provide both integrated and nonintegrated smart amplifiers, giving engineers a broad range of design options.
The TAS2555 is also the first low-power amplifier supported by the PurePathâ„¢ Console 3 software suite, which gives both advanced and beginner designers a path to meet diverse system requirements. The solution takes the guesswork out of speaker characterization and includes easy-to-use tools for tuning and integration into end products, thus accelerating time to market for smartphones, tablets and other audio-enabled portable electronics.
Key features and benefits of the TAS2555 smart amplifier include: Louder and clearer audio, 5.7W output power into 4 Ohms and 3.8W into 8 Ohms at 4.2V. Low idle-channel noise (ICN) simplifies designs, 15.9- uV ICN eliminates audible speaker noise when using the smartphone in a receiver or pause mode and also eliminates the need for external components. Integrated multilevel Class-H boost converter and automatic gain control, dynamically adjusting audio output during periods of low battery voltage maximizes battery life. User-specified boost control helps customize boost on/off based on end-equipment power profile requirements. Reduces development time, use any processor with an I(2)S output to enable on-chip speaker protection. This greatly reduces porting and integration time, enabling end equipment manufacturers to get to market faster.
The TAS2555 smart amplifier is available today in a 3.47-mm-by-3.23-mm, 42-ball wafer-level chip-scale package (WCSP) and is priced at US$2.50 in 1,000-unit quantities.
