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| 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. It also has the features of linear volume control, stand-by and mute functions. SOP-20-375-1.27 FEATURES * Max output power: 2W+2W(RL=8 ) * 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 DIP-20-300-2.54 DIP-20IH-300-2.54 ORDERING INFORMATION Device SA7496 SA7496L SA7496LS Package DIP-20IH-300-2.54 DIP-20-300-2.54 SOP-20-375-1.27 APPLICATIONS * Quality sound * 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 Characteristics DC Supply Voltage Maximum Input Voltage Operating Temperature Storage Temperature Junction Temperature Volume Control DC Voltage SA7496 Thermal Resistance SA7496L SA7496LS Symbol VCC VIN Topr Tstg Tj V6 Rth(j-a)1 Rth(j-a)2 Rth(j-a)3 Ratings 26 8 0 ~ + 70 -40 ~ +150 -40 ~ +150 7 50 70 80 Unit V VPP C C C V C/W C/W C/W ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC =14V, RL=8 , Rg =50, f=1KHz, Tamb=25C) Characteristics Supply Voltage Range Supply Current Output DC Offset Referred to SVR Potential Quiescent Output Voltage Output Power Closed Loop Gain Monitor Out Gain Attenuation at Minimum Volume Total Harmonic Distortion Output Peak Current Bandwidth Slew Rate Input Resistance Variable Output Resistance Thermal Muting Thermal Shut-down Symbol VCC ICC Test condition SA7496L/SA7496LS SA7496* Class AB Min. 10 10 ---1.6 -28.5 -1.5 80 -0.7 -5 22.5 ---1kHz; max volume 1kHz; max attenuation 35 55 Typ. --25 200 7 2 1.3 30 0 --0.9 0.6 8 30 30 150 160 39 65 Max. 16 18 50 ----31.5 1.5 -0.4 ----100 ----Unit V V mA mV V W W dB dB dB % A MHz V/us k C C dB dB DCVOS No input Signal VO PO Gv Gvline THD Ipeak BW SR Ri TM TS -THD=10%; RL=8 THD=1%; RL=8 Vol Ctrl > 4.5V Vol Ctrl > 4.5V;Zload>30k Gv=30dB; Po=1W;f=1KHz (Internally limited) -----f CSVR 470F; VRIP 1Vrms f CSVR 470F; VRIP 1Vrms Amin Vol Vol Ctrl <0.5V Rvar out -- Supply Voltage Rejection SVR (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 f Test condition 20Hz ~22KHz 20Hz ~22KHz 20Hz ~22KHz, Mute Play, max volume Min. ---3.5 -3.5 -50 ------ Typ. 500 100 60 ----65 0.6 1 0.2 1 0.2 Max. 800 250 150 -1.5 -1.5 -1 5 2 5 2 Unit V V V V V V V dB mA A A A A Total Output Noise eN f f Play, max attenuation MUTE STAND-BY & INPUT SELECTION FUNCTIONS Stand-by ON Threshold Stand-by OFF Threshold Mute ON Threshold Mute OFF Threshold Mute Attenuation Quiescent Current @ Stand-by Mute Bias Current VST ON -VST OFF -VM ON -VM OFF -AMUTE -IqST-BY -ImuteBIAS Mute Play 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. 1 2 3 Pin name GND GND GND Ground Ground Ground (To be continued) Description HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 3 of 10 SA7496L (Continued) Pin No. 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin name INL VAROUT_L VOLUME VAROUT_R NC INR SVR STBY MUTE GND OUTR VCC VCC OUTL GND GND GND Left input Left output_1 Volume control Left output_2 Not connect Right input Supply voltage rejection Stand by pin MUTE pin Ground Right output Supply voltage Supply voltage Left output Ground Ground Ground Description 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' voltages go up. s In this circuit, as the operation temperature' increase, the transistor' threshold limit value will decrease, when s s 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 H L H L ST-BY H H L L Operating State STANDBY STANDBY MUTE PLAY Note: " denotes the voltage is larger than 3.5V, and " denotes the voltage is lower than 1.5V. H" L" 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 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn SA7496/L/LS 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 26.40.3 15 degree 0.51MIN 0.51 SOP-20-375-1.27 Unit: mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 8 of 10 SA7496L PACKAGE OUTLINE Continued) DIP-20IH-300-2.54 Unit: mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.12.31 Page 9 of 10 |
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