AN7511AN7511, Serwisówki TV, Układy Scalone
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ICs for Audio Common Use AN7511, AN7511S 1-W BTL audio power amplifier Overview The AN7511 and AN7511S are the audio power am- plifier ICs with 1-ch output. The BTL (Balanced Trans- former-Less) method can provide fewer external parts and more easy design for applications. AN7511 Unit: mm 1 2 3 4 8 7 6 5 0.30±0.26 6.4±0.2 3.35±0.20 3.89±0.20 Features • 1-W output (8 Ω) with supply voltage of 5 V: AN7511 • 0.5-W output (16 Ω) with supply voltage of 5 V: AN7511S • On-chip standby function • On-chip muting function 3 to 15 ° 7.62±0.30 Applications • Televisions, radios, and personal computers DIP008-P-0300 AN7511S Unit: mm 5.01±0.20 8 5 (1.05) 0 ° to10 ° 0.50±0.20 1 4 (0.60) 1.27 0.40 +0.10 –0.05 0.10 Seating plane SOP008-P-0225C Block Diagram V CC 5 Ripple rejection circuit 1 Standby Attenuator Output 6 28 dB Thermal shutdown Output 8 Attenuator control GND (for output) 7 28 dB 1 ° AN7511, AN7511S ICs for Audio Common Use Pin Descriptions Pin No. Description 1 Standby (standby state if this pin is open.) 2 Input 3 Ground (for input) 4 Muting (muting on if this pin is open.) 5 Supply voltage 6 + Output 7 Ground (for output ch.1) 8 − Output Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage * 2 V CC 14 V Supply current I CC 1.0 A Power dissipation * 3 P D 541 mW Operating ambient temperature * 1 T opr − 25 to + 70 ° C Storage temperature * 1 T stg − 55 to + 150 ° C Note) * 1: Except for the operating ambient temperature and storage temperature, all ratings are for T a = 25 ° C. * 2: At no signal * 3: The power dissipation shown is the value for T a = 70 ° C. Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 3.5 to 13.5 V Electrical Characteristics at V CC = 5.0 V, R L = 8 Ω , f = 1 kHz, T a = 25 ° C ± 2 ° C Parameter Symbol Conditions Min Typ Max Unit Quiescent circuit current I CQ V IN = 0 mV 30 60 mA Standby current I STB V IN = 0 mV 1 10 µ A Output noise voltage * V NO R g = 10 k Ω 0.14 0.4 mV[rms] Voltage gain G V P O = 0.25 W 32 34 36 dB Total harmonic distortion THD P O = 0.25 W 0.05 0.5 % Maximum output power P O1 THD = 10% 0.8 1.1 W Ripple rejection ratio * RR R g = 10 k Ω , V R = 1 V[rms], f R = 120 Hz 30 50 dB Output offset voltage V OFF R g = 10 k Ω − 300 0 300 mV Muting effect * MT P O = 0.25 W 70 86 dB Note) * : In measuring, the filter for the range of 15 Hz to 30 kHz (12 dB/OCT) is used. 2 ICs for Audio Common Use AN7511, AN7511S Terminal Equivalent Circuits Pin No. Pin name Equivalent circuit Voltage 1 Standby pin V CC 5 V To the shock sound prevention circuit 1 V RF ( V CC ) 200 Ω 1/2 V CC To the constant current circuit 2 Input pin 0 mV to 10 mV V CC 200 Ω 400 Ω 2 3 GND 0 V 3 4 Muting pin V CC 4 200 Ω Ref. = 1.25 V To Mute 3 ≈ AN7511, AN7511S ICs for Audio Common Use Terminal Equivalent Circuits (continued) Pin No. Pin name Equivalent circuit Voltage 5 V CC 5.0 V 6 + Output pin V CC 2.15 V 200 Ω 50 Ω 6 1/2 V CC 800 Ω 20 kΩ 7 GND 0 V 7 8 − Output pin V CC 2.15 V 200 Ω 50 Ω 8 1/2 V CC 800 Ω 20 k Ω Usage Notes • Please avoid the short circuit to V CC , ground, or load short circuit. • Please connect the cooling fin with the GND potential. • The thermal shutdown circuit operates at about T j = 150°C. However, the thermal shutdown circuit is reset automati- cally if the temperature drops. • Please carefully design the heat radiation especially when you take out high power at high V CC . • Please connect only the ground of signal with the signal GND of the amplifier in the previous stage. 4 ICs for Audio Common Use AN7511, AN7511S Technical Data 1. Package power dissipation P D T a 1 000 900 800 Independent IC without a heat sink R th(j-a) = 148°C/W P D = 845 mW (25°C) 700 600 500 400 300 200 100 0 0 25 50 70 75 100 125 150 Ambient temperature T a (°C) 2. Main characteristics P O V CC I CQ , I STB V CC 8 100 10 7 90 9 6 80 8 70 7 5 P O (8 Ω ) 60 6 4 50 5 f = 1 kHz THD = 10% R L = 8 Ω 400 Hz HPF 30 kHz LPF Both ch. inputs R g = 10 kΩ V STB I CQ 3 40 4 Ω Both ch. inputs R g = 8 2 30 = 10 k Ω 3 20 V STB = 0 V/5 V 2 V MUTE = 0 V 1 I STB = 5 V 10 1 V MUTE = 0 V 0 0 0 0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14 Supply voltage V CC (V) Supply voltage V CC (V) 5 R L [ Pobierz całość w formacie PDF ] |
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