DATA SHEET AAT5101 2.5W Mono Filter-Free Class D Audio Power Amplifier Description Features The AAT5101 is a high efficiency, 2.5W mono class D Maximum Battery Life and Minimum Heat audio power amplifier. The low noise, filterless PWM 1.35mA Quiescent Current architecture eliminates the output filter, reduces the 0.06A Shutdown Current external component count and system cost, and simpli- Up to 92% Efficiency fies system design. With high efficiency of up to 92% and Large Output Power Capabilities the industry lowest 1.35mA quiescent current, it increas- 1.35W with 8 Load and THD+N < 1% es battery lifetime and dramatically lowers the junction 2.5W with 4 Load and THD+N < 10% temperature. The space saving wafer-level chip scale Pop and Click Noise Suppression Circuitry package (WLCSP) and minimum external component Thermal and Output Short Circuit Protection with Self- requirements make it ideal for cellular phones and recovery PDAs. High Performance, THD+N of 0.12% at 5V, 8 Load and P = 1.0W OUT With high PSRR, low THD+N, and 91dB SNR, the Filter-less Capability AAT5101 guarantees clean sound across the wide audio Internally Generated 250 kHz Switching Frequency output power range and the full audio frequency domain. Excellent PSRR and Wide Supply Voltage Range (2.1V Short circuit and thermal protection with self-recovery to 5.5V) prevents the device from being damaged during over Fully Differential Design current conditions. External Gain Configuration Capability In cellular phones, the earpiece, speaker phone and 9-Pin Wafer-Level Chip Scale Packaging (WLCSP) melody ringer can each be driven by the AAT5101. Also, proprietary technology successfully suppresses pop and Applications click noise. Cellular Phones MP4s Notebook Computers PDAs Portable DVD Players Typical Application To Battery C S V DD R I IN - + V + O - Differential input PWM H-Bridge R L + V - O RI IN + - Shutdown Control GND SHUTDOWN Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 201876B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. April 25, 2012 DATA SHEET AAT5101 2.5W Mono Filter-Free Class D Audio Power Amplifier Pin Description Pin Symbol Type Description A1 IN+ I Positive differential input. A2 GND I Analog ground. A3 VO- O Negative BTL output. B1 VDD I Analog power supply. B2 PVDD I Power supply for internal H-bridge stage. B3 GND I Analog ground. C1 IN- I Negative differential input. The device enters shutdown mode when a low level is applied on this pin. An internal C2 SHUTDOWN 300k will force the device into shutdown mode if no signal is applied to this pin. It also helps to save space and cost. C3 VO+ O Positive BTL output Pin Configuration WLCSP-9 (Top View) . IN+ GND VO- A1 A2 A3 VDD PVDD GND B1 B2 B3 IN- VO+ SHUTDOWN C1 C2 C3 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 201876B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. April 25, 2012