AN7513AN7513, Serwisówki TV, Układy Scalone
[ Pobierz całość w formacie PDF ]
ICs for Audio Common Use AN7513, AN7513S 1-W BTL audio power amplifier Overview The AN7513 and AN7513S 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. AN7513 Unit: mm 1 2 3 4 8 7 6 5 0.51 min. Features • 1-W output (8 Ω) with supply voltage of 5 V: AN7513 • 0.5-W output (16 Ω) with supply voltage of 5 V: AN7513S • On-chip standby function • On-chip volume function 6.3±0.3 3.8±0.25 (3.45) 3 ° to 15 ° 7.62±0.25 Applications • Televisions, radios, and personal computers DIP008-P-0300B AN7513S Unit: mm 1 2 3 4 8 7 6 5 0.3 4.2±0.3 6.5±0.3 SOP008-P-0225A Block Diagram V CC 5 Ripple rejection circuit 1 Standby Attenuator Output 6 28 dB Thermal shutdown Output 8 Attenuator control 7 GND (for output) 28 dB 1 AN7513, AN7513S 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 Volume (max. volume 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, Vol. = 0 V 20 60 mA Standby current I STB V IN = 0 mV, Vol. = 0 V 1 10 µA Output noise voltage * V NO R g = 10 kΩ, Vol. = 0 V 0.10 0.4 mV[rms] Voltage gain G V P O = 0.25 W, Vol. = 2.5 V 31 33 35 dB Total harmonic distortion THD P O = 0.25 W, Vol. = 2.5 V 0.10 0.5 % Maximum output power P O1 THD = 10%, Vol. = 2.5 V 0.7 1.0 W Ripple rejection ratio * RR R g = 10 kΩ, Vol. = 0 V, 30 50 dB V R = 1 V[rms], f R = 120 Hz Output offset voltage V OFF R g = 10 kΩ, Vol. = 0 V −250 0 250 mV Volume attenuation rate * Att P O = 0.25 W, Vol. = 0 V 70 85 dB Intermediate voltage gain G VM P O = 0.25 W, Vol. = 1.25 V 20.5 23.5 26.5 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 AN7513, AN7513S 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 V REF1 (1.4 V) 0 mV to 10 mV V CC 2 1 k Ω 3 GND 0 V 3 4 Volume pin V CC 4 1 k Ω 3 AN7513, AN7513S 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 2.15 V V CC 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 kΩ 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 AN7513, AN7513S 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. Example of PCB pattern Out + Out − V CC 8 7 6 5 GND 1 2 3 4 GND Volume V IN Standby 5 [ Pobierz całość w formacie PDF ] |
Podobne
|