AN5275AN5275, Serwisówki TV, Układy Scalone
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ICs for Audio Common Use AN5275 15W ´ 2Ch. Low Frequency Power Amplifier Circuit for TV Overview The AN5275 is an audio power IC developed for TV sound output (15W 8.2±0.3 Unit : mm 12 2Ch.). High density mounting is possible and it can contribute to cost reduction, because it requires fewer external com- ponents. It incorporates various protective circuits to provide high reliability and breakage resistance. ´ ø3.6 R1.8 Features • Wide operating supply voltage range (10 to 40V) • Little distortion and noise • Fewer external components · BS (boot-strap) electrolytic capacitor not required • Audio muting function built-in • Very small shock noise at power ON/OFF • Various protective circuits built-in · Load short-circuit protection. Protection against over- voltage and – current. Temperature protection 1 (12.5) (1.2) 19.1±0.3 21.9±0.3 12-lead HSIP package (HSIP012-P-0000A) n Pin Description Pin No. Pin Description Pin No. Pin Description 1 2 3 4 5 6 Ch.1 NF pin Ch.1 input pin Ripple filter pin GND (sound input side) Ch.2 input pin Ch.2 NF pin 7 8 9 10 11 12 Ch.2 output pin Muting pin GND (sound output side) Supply voltage NC Ch.1 output pin n Block Diagram Ripple Filter Mute 1 2 3 4 5 6 7 8 9 10 11 12 Ch1. NF Ch1. Input GND Ch2. NF Ch2. Input Ch2. Output GND V CC NC Ch1. Output n n AN5275 ICs for Audio Common Use n Absolute Maximum Ratings (Ta= 25˚C) Parameter Symbol Rating Unit Supply Voltage V CC I CC P D V surge T opr T stg 4.5 V Supply Current Power Dissipation Note 1) Peak Supply Voltage Note 2) Operating Ambient Temperature Storage Temperature 4.0 25 60 – 25 ~ + 80 – 55 ~ + 150 A W V ˚C ˚C Note 1) R qj – c = 2˚C/W Note 2) t = 0.2s n Recommended Operating Range (Ta = 25˚C) Parameter Symbol Range Operating Supply Voltage Range V CC 10.0V ~ 40.0V n Electrical Characteristics (V CC = 32V, f req. = 1kHz, Ta= 25 ± 2˚C) Parameter Symbol Condition min. typ. max. Unit Static Circuit Current Output End Noise Voltage Note 1) Voltage Gain Total Harmonics Distortion Max. Output Power I CQ V NO G V THD P O V IN = 0mV, R L = 8½ Rg= 4.7k½ , R L = 8½ V IN = 57mV, R L = 8½ V IN = 57mV, R L = 8½ THD= 10%, R L = 8½ 32 100 0.12 34 0.05 15 200 0.4 36 0.40 mA mVrms dB % W 11 Ripple Rejection Ratio Note 1) RR R L = 8½ , Vr= 1Vrms f r = 120Hz, Rg= 4.7k ½ 45 57 dB Channel Balance CB V IN = 57mV, R L = 8½ –1 0 1 dB Note 1) 15Hz to 30kHz (12dB/OCT) filter is used for measurement. P D – Ta 65 (62.5) 60 R th(j – c) = 2˚C/W R th(j – a) = 42˚C/W 55 50 45 (41.7) 35 (31.3) (25.0) (17.9) 15 (10.4) 5 No heat sink (3.0) 0 0 25 50 75 100 125 150 Ambient Temperature Ta (˚C) 40 30 20 10 [ Pobierz całość w formacie PDF ] |
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