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APA2605 Datasheet(PDF) 1 Page - Anpec Electronics Coropration |
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APA2605 Datasheet(HTML) 1 Page - Anpec Electronics Coropration |
1 / 30 page Copyright © ANPEC Electronics Corp. Rev. A.7 - Mar., 2013 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. 2.8W Stereo Class-D Audio Power Amplifier (with DC Volume Control, AGC Function) APA2605 The APA2605 is a stereo, high efficiency, filter-free Class- D audio amplifier available in SOP-18, SSOP-24, SSOP-24P, and QFN4x4-20A packages. The APA2605 provides the precise DC volume control, the gain range is from -80dB (V VOLUME=0V) to +20dB (V VOLUME=5V) with 64 steps precise control. It’ s easy to get the suitable amplifier’s gain with the 64 steps gain setting. The filter-free architecture eliminates the output filters compared to the traditional Class-D audio amplifier, and reduces the external component counts and the compo- nents high, it could save the PCB space, system cost, simplifies the design and the power loss at filter. APA2605 provides an AGC (Non-Clip) function, and this function can low down the dynamic range for large input signal. APA2605 can provide from 20dB to -80dB with 64 steps gain decrease for non-clipping function, and this function can avoid output signal clipping. The APA2605 also integrates the de-pop circuitry that re- duces the pops and click noise during power on/off or shutdown enable process. The APA2605 has build-in over-current and thermal pro- tection that prevent the chip being destroyed by short- circuit or over-temperature situation. APA2605 is capable of driving 2.8W at 5V into 4 Ω speaker. The efficiency can archive 85% at R L=4Ω when PO=2.8W at V DD=5V. Features General Description Applications • LCD TVs • DVD Player • Active Speakers • Operating Voltage: 3.3V-5.5V • High Efficiency 85% at P O=2.8W, 4Ω Speaker, V DD=5V • Filter-Free Class-DAmplifier • Low Shutdown Current – I DD=1µA at VDD=5V • 64 Steps Volume Adjustable from -80dB to +20dB by DC Voltage with Hysteresis • AGC(Non-Clip)Function • Output Power at THD+N=1% – 2.3W at V DD=5V, RL=4Ω – 1.3W at V DD=5V, RL=8Ω Output Power at THD+N=10% – 2.8W at V DD=5V, RL=4Ω – 1.6W at V DD=5V, RL=8Ω • Less External Components Required • Thermal and Over-Current Protections with Auto- Recovery • Power Enhanced Packages SSOP-24, SOP-18, SSOP-24P & QFN4x4-20A • Lead Free and Green Devices Available (RoHS Compliant) Simplified Application Circuit APA2605 Stereo Speakers ROUTP ROUTN LOUTN LOUTP RINN LINN Volume Stereo Input Signals DC Volume Control |
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