OSRAM AS3560-BWLT-500

The AS3560 is a Class-G stereo headphone amplifier optimized for usage within portable devices. The Class-G supply rail adaptation is implemented by an integrated DCDC buck converter that takes its input directly from the battery. The continuous adoption of supply rails is done according to the input signal swing and load conditions. This architecture implements significant power savings compared to traditional Class-AB amplifiers. An I²C control interface is implemented for a 32-step volume control including a mute function for each channel separately. The integrated charge pump generates a symmetric negative supply for true ground output signal levels without the need of output coupling capacitors. In addition it helps to lower the overall pop noise of the amplifier. A supervisory circuit is included for overtemperature and short-circuit protection. Differential inputs together with output ground sensing guarantees very low noise sensitivity.

• Mobile Phones
• Portable Navigation Devices
• Media Devices