APA2011A

APA2011/2011A 2.8W Mono Class D Audio Power Amplifier with AGC Features Operating Voltage: 2.4V-5.5V High Efficiency up to 90% Supply Current ¡VIDD=3mA at VDD=5V ¡VIDD=2.5mA at VDD=3.6V Low Shutdown Current ¡VIDD=1µA at VDD=5V Output Power at 1% THD+N ¡V1.3W, at VDD=5V, RL=8Ω ϒς 0.6W, at VDD=3.6V, RL=8Ω ϒς 2.0W, at VDD=5V, RL=4Ω ϒς 1.0W, at VDD=3.6V, RL=4Ω at 10% THD+N ¡V1.6W, at VDD=5V, RL=8Ω ϒς 0.8W, at VDD=3.6V, RL=8Ω ϒς 2.8W, at VDD=5V, RL=4Ω (WLCSP-9) ¡V2.4W, at VDD=5V, RL=4Ω General Description The APA2011/2011A is a mono, filter-free Class-D audio amplifier available in WLCSP1.5x1.5-9 or TDFN3x3-8 package. The default gains without the external input resistor is 27dB. Besides, the gain can be low down by external input resistance. APA2011 provides an Dynamic-RangeControl (DRC) function, and this function can low down the dynamic range for large input signal. APA2011 can provide maximun 15dB gain control. APA2011A can provide maximum 15dB gain decrease for non-clipping function, and this function can avoid output signal clipping. High PSRR and differential architecture provide increased immunity to noise and RF rectification. In addition to these features, a fast start-up time and small package size make the APA2011/2011A an ideal choice for portable devices. The APA2011/2011A is capable of driving 1.6W at 5V or 0.8W at 3.6V into 8Ω. It is also capable of driving 4Ω. The APA2011/2011A is designed with a Class-D architecture and operating with highly efficien...