APA2058

APA2058 2.4W Stereo Fully Differential Audio Power Amplifier With Stereo Class AB Cap-free Headphone Driver and LDO Features General Description The APA2058 is a stereo fully differential audio power amplifier with stereo Class-AB cap-free headphone driver and LDO available in a TQFN5X5-32A pins package. The built-in gain setting at power amplifier can minimize the external component counts. For the flexible application, the gain can be set to 4-steps, 10, 12, 15.6, and 21.6dB by gain control pins (GAIN0 and GAIN1). The power amplifier’ s fully differential architecture provides high PSRR, increased immunity to noise and RF rectification. The APA2058 power amplifiers are capable of driving 2.4W at VDD=5V into 4Ω speaker, the cap-free headphone drivers can provide 180mW at HV DD=3.3V into 16 Ω headphones, and the LDO has a maximum 200mA(3.3V) driver current for audio codec. The APA2058 provides thermal and over-current protections. The cap-free headphone driver eliminates the DC blocking capacitors at outputs, save the PCB space. The integration of fully differential power amplifier, cap-free headphone driver, and LDO is a best solution for VISTATM requirement and it can lower the total BOM costs. Meeting VISTATM Requirement Fully Differential Power Amplifier with Excellent RF Rectification Immunity No Output Capacitor Required for Head Phone Driver Integrated LDO (Low Dropout Regulator) for Audio Codec (3.3V) Adjustable Gain Setting for Power Amp...