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APA2020AKI-TR Datasheet(PDF) 1 Page - Anpec Electronics Coropration |
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APA2020AKI-TR Datasheet(HTML) 1 Page - Anpec Electronics Coropration |
1 / 25 page Copyright ANPEC Electronics Corp. Rev. A.5 - July., 2002 APA2020A 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. Stereo 2-W Audio Power Amplifier Features ••••• Low Supply Current , I DD= 8mA at Stereo BTL • Low Shutdown Current , I DD= 0.5µA • Depop Circuitry Integrated • Low Supply Voltage • Thermal Shutdown Circuitry Integrated • Output Power at 1% THD+N , V DD=5V - 1.8 W/Ch (typ) into a 4 Ω Load - 1.2 W/Ch (typ) into a 8 Ω Load • Bridge-Tied Load (BTL) or Single-Ended (SE) Modes Operation • Various 24-Pin Power Packages Available SOP , TSSOP-P • High Supply Voltage Ripple Rejection Applications General Description Ordering Information APA2020A Handling Code Temp. Range Package Code Package Code K : SOP R : TSSOP-P * Temp. Range I: - 40 to 85 C Handling Code TU : Tube TR : Tape & Reel TY : Tray ° * TSSOP-P is a standard TSSOP package with a thermal pad exposure on the bottom of the package. The APA2020A is a stereo bridge-tied audio power amplifier in various 24-pin power packages , includ- ing SOP , TSSOP-P. When connecting to a 5V volt- age supply , the APA2020A is capable of delivering 1.8W/1.2W of continuous RMS power per channel into 4 Ω/8Ω loads with less than 1% THD+N , respectively. The APA2020A simplifies design and frees up board space for other features . • Stereo Audio Power Amplifier for Notebook Computer The APA2020A also served well in low-voltage applications , which provides 800-mW per channel into 4 Ω loads with a 3.3V supply voltage . Both of the depop circuitry and the thermal shutdown protection circuitry are integrated in the APA2020A , that reduces pops and clicks noise during power up and when using the shutdown or mute modes and protects the chip from being destroyed by over-temperature failure. To simplify the audio system design in notebook computer applications , the APA2020A combines a stereo bridge-tied loads (BTL) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip , where both modes are easily switched by the SE/BTL input control pin signal . For power sensitive applications , the APA2020A also features a shutdown function which keeps the supply current only 0.5 µA (typ) . |
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