TMPA221DS

Multimedia application includes Cellular Phones, PDAs, DVD/CD players, 2.1 channel audio systems, USB audio. It is also ideal for other portable devices like Wireless Radios.

(1) Stresses beyond those listed under"absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions "is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

The TMPA221DS is a 2.1 channel stereo & bass class-D audio power amplifier IC. It delivers up to 2.7W (bass) and 0.6W(right/left channel each) into 3 ohm loads. The bass output is designed as BTL (Bridge-Tied-Load) for high output power. The right & left channels are designed as SE (Single-Ended)

. The power efficiency can be up to 82% for 8 ohm load. No external heat-sink is required. The internal de-pop circuitry eliminates pop noise at power-up & shutdown operations. Automatic power gain control makes the best use of battery. Analog input signal is converted into digital output which drives directly the speaker. High power efficiency is achieved due to digital output at the load.

The audio information is embedded in PWM Pulse Width Modulation .