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APA2058QBI-TRG Datasheet(PDF) 1 Page - Anpec Electronics Coropration |
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APA2058QBI-TRG Datasheet(HTML) 1 Page - Anpec Electronics Coropration |
1 / 29 page Copyright © ANPEC Electronics Corp. Rev. A.5 - Feb., 2010 www.anpec.com.tw 1 ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. 2.4W Stereo Fully Differential Audio Power Amplifier With Stereo Class AB Cap-free Headphone Driver and LDO APA2058 Features General Description Applications • LCD Monitor • Notebook • Portable DVD • Meeting VISTATM Requirement • FullyDifferential 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 Amplifier • A V=-1.5V/V Fixed Gain Setting for Headphone Driver • Fast Start-up Time • Integrated De-Pop Circuitry • High PSRR (Power SupplyRejection Ratio) • Thermal and Over-Current Protections • Less External Components Required • Space Saving Package – TQFN5x5-32A • Lead Free and Green Devices Available (RoHS Compliant) Simplified Application Circuit 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, in- creased immunity to noise and RF rectification. The APA2058 power amplifiers are capable of driving 2.4W at V DD=5V into 4Ω speaker, the cap-free headphone drivers can provide 180mW at HV DD=3 .3 V in to 1 6Ω headphones, and the LDO has a maximum 200mA(3.3V) driver current for audio codec. The APA2058 provides ther- mal and over-current protections. The cap-free headphone driver eliminates the DC block- ing capacitors at outputs, save the PCB space. The inte- gration of fully differential power amplifier, cap-free head- phone driver, and LDO is a best solution for VISTATM re- quirement and it can lower the total BOM costs. -100 +0 -90 -80 -70 -60 -50 -40 -30 -20 -10 20 20k 100 1k 10k Frequency (Hz) V DD=5.0V R L=4Ω A V=10dB V in=0.2VPP C i=0.47µF Input Short AMP Mode Audio Codec Stereo Speakers Stereo Headphone LDO (Low Drop -Out Regulator) |
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