SA7496L 2-CH AUDIO POWER AMPLIFIER(2W X 2) DESCRIPTION The SA7496L is a monolithic two channels power amplifier, it is a stereo 2W+2W class AB output stage in the DIP20 and SOP20 package, specially designed for high quality sound, TV applications. SOP-20-375-1.27 It also has the features of linear volume control, stand-by and mute functions. FEATURES * Max output power: 2W+2W(RL=8 ) DIP-20-300-2.54 DIP-20IH-300-2.54 * ST-BY & MUTE functions * Linear volume control DC Coupled with power OP.AMP * Short circuit protection * Thermal overload protection * Internally fixed gain * Variable output after volume control circuit APPLICATIONS * Quality sound ORDERING INFORMATION Device Package SA7496 DIP-20IH-300-2.54 SA7496L DIP-20-300-2.54 SA7496LS SOP-20-375-1.27 * TV applications * PC Speakers * Sound processors * Mini and micro audio receivers BLOCK DIAGRAM HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 1 of 10 SA7496L ABSOLUTE MAXIMUM RATINGS Symbol Ratings Unit DC Supply Voltage Characteristics VCC 26 V Maximum Input Voltage VIN 8 VPP Operating Temperature Topr 0 ~ + 70 °C Storage Temperature Tstg -40 ~ +150 °C Junction Temperature Tj -40 ~ +150 °C Volume Control DC Voltage V6 7 V SA7496 Thermal Resistance SA7496L SA7496LS Rth(j-a)1 50 °C/W Rth(j-a)2 70 °C/W Rth(j-a)3 80 °C/W ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC =14V, RL=8 , Rg =50Ω, f=1KHz, Tamb=25°C) Characteristics Symbol Supply Voltage Range VCC Supply Current ICC Output DC Offset Referred to SVR Potential Min. Typ. Max. Unit SA7496L/SA7496LS 10 -- 16 V SA7496* 10 -- 18 V Class AB -- 25 50 mA -- 200 -- mV -- 7 -- V THD=10%; RL=8Ω 1.6 2 -- W THD=1%; RL=8Ω -- 1.3 -- W Vol Ctrl > 4.5V 28.5 30 31.5 dB Vol Ctrl > 4.5V;Zload>30kΩ -1.5 0 1.5 dB 80 -- -- dB DCVOS No input Signal Quiescent Output Voltage VO Output Power PO Closed Loop Gain Gv Monitor Out Gain Gvline Attenuation at Minimum Volume Test condition -- Amin Vol Vol Ctrl <0.5V Total Harmonic Distortion THD Gv=30dB; Po=1W;f=1KHz Output Peak Current Ipeak (Internally limited) Bandwidth BW Slew Rate Input Resistance Variable Output Resistance -- -- 0.4 % 0.7 0.9 -- A -- -- 0.6 -- MHz SR -- 5 8 -- V/us Ri -- 22.5 30 -- kΩ -- 30 100 Ω -- 150 -- °C -- 160 -- °C 35 39 -- dB 55 65 -- dB Rvar out -- Thermal Muting TM -- Thermal Shut-down TS -f Supply Voltage Rejection SVR 1kHz; max volume CSVR 470µF; VRIP 1Vrms f 1kHz; max attenuation CSVR 470µF; VRIP 1Vrms (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 2 of 10 SA7496L (Continued) Characteristics Symbol Test condition f Min. Typ. Max. Unit -- 500 800 µV -- 100 250 µV -- 60 150 µV 20Hz ~22KHz Play, max volume Total Output Noise eN f 20Hz ~22KHz Play, max attenuation f 20Hz ~22KHz, Mute MUTE STAND-BY & INPUT SELECTION FUNCTIONS Stand-by ON Threshold VST ON -- 3.5 -- -- V Stand-by OFF Threshold VST OFF -- -- -- 1.5 V 3.5 -- -- V Mute ON Threshold VM ON Mute OFF Threshold VM OFF -- -- -- 1.5 V Mute Attenuation AMUTE -- 50 65 -- dB Quiescent Current @ Stand-by IqST-BY -- -- 0.6 1 mA Mute -- 1 5 µA Play -- 0.2 2 µA -- 1 5 µA -- 0.2 2 µA Mute Bias Current ImuteBIAS -- Standby on VST-BY=5V, Standby Bias Current ImuteBIAS VMUTE=5V Play or Mute * Because the heat dispersion of package DIP-20IH-300-2.54 is better the other two, the maximum operating voltage of SA7496 is higher than that of SA7496L/SA7496LS. But it is advisable not over 18V advisable. PIN CONFIGURATION PIN DESCRIPTION Pin No. Pin name 1 GND Ground Description 2 GND Ground 3 GND Ground (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 3 of 10 SA7496L (Continued) Pin No. Pin name 4 INL 5 VAROUT_L Description Left input Left output_1 6 VOLUME 7 VAROUT_R Left output_2 Volume control 8 NC Not connect 9 INR Right input 10 SVR Supply voltage rejection 11 STBY Stand by pin 12 MUTE MUTE pin 13 GND Ground 14 OUTR 15 VCC Supply voltage 16 VCC Supply voltage 17 OUTL Left output 18 GND Ground 19 GND Ground 20 GND Ground Right output FUNCTION DESCRIPTION The SA7496L is a semiconductor integrated circuit consisting of two channel power amplifiers, which is a stereo class AB power amplifier, specially designed for high quality sound, TV applications, which include linear volume control, stand-by and mute functions. There are the MUTE and STAND-BY turn on and off conversion circuit in order to eliminate the plops noise. When the both voltages are low and the operation will be normal. While the STAND-BY is high, the circuit will turn off the bias current, so it will be the stand-by state. Also when the STAND-BY is low and the MUTE is high, the circuit will be the mute state, in this operation, the bias current of the signal channels will be shutdown. The SA7469L built-in a DC volume control circuit. While the voltage of pin6 is 0, the output voltage will be 0; and the gain will be increased as the pin6’ s voltages go up. In this circuit, as the operation temperature’ s increase, the transistor’ s threshold limit value will decrease, when the temperature up to 150 °C, the thermal protection circuit will turn on and the signal channel will be shutdown. MUTE & STAND-BY TRUTH TABLE MUTE ST-BY Operating State H H STANDBY L H STANDBY H L MUTE L L PLAY Note: “H”denotes the voltage is larger than 3.5V, and “L”denotes the voltage is lower than 1.5V. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 4 of 10 SA7496L STAND-BY AND MUTE FUNCTIONS DIAGRAM VS(V) STBY(V) 5 VSVR(V) 2.5V MUTE(V) 5 INPUT(mV) VOUT(V) OFF STBY MUTE PLAY MUTE STBY OFF IQ(mA) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 5 of 10 SA7496L TYPICAL APPLICATION CIRCUIT SA7496/L/LS HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 6 of 10 SA7496L ELECTRICAL CHARACTERISTICS CURVES HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 7 of 10 SA7496L PACKAGE OUTLINE DIP-20-300-2.54 Unit: mm 2.54 1.27 15 degree 26.4±0.3 0.51MIN 0.51 SOP-20-375-1.27 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Unit: mm REV:1.2 2006.12.31 Page 8 of 10 SA7496L PACKAGE OUTLINE Continued) DIP-20IH-300-2.54 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Unit: mm REV:1.2 2006.12.31 Page 9 of 10