SA7269 2-CH AUDIO POWER AMPLIFIER(10W X2) DESCRIPTION The SA7269 is a monolithic integrated circuit in HSIP package, intended for use as dual audio frequency class AB amplifier. FEATURES HSIP-11 * Wide supply voltage range up to 40V ABS MAX. * Split supply operation. * High output power: 10+10W @ THD=10%, RL=8 , Vs=±14V * Mute/stand-by function. * Few external components. HSIP-15 * Short circuit protection. * Thermal overload protection. APPLICATIONS ORDERING INFORMATION * Hi-Fi music centers Part No. * Stereo TV sets Package SA7269 HSIP-11 SA7269A HSIP-15 BLOCK DIAGRAM Note: Figures for the SA7269. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 1 of 11 SA7269 ABSOLUTE MAXIMUM RATING Characteristics Symbol Rating Unit DC Supply Voltage Vs 44 V Output Peak Current (Internally Limited) Io 3 A Ptot 40 W Tstg, Tj -40~+150 °C Vs(sc) ±18(*) V Rth(j-c) 2 °C/W Power Dissipation Tcase=70°C Storage And Junction Temperature Supply voltage to guarantee short-circuit protection Thermal Resistance From Junction To Case (Max) (*)Maximum supply voltage to guarantee short-circuit to ±Vs is ±18V, and to GND short-circuit protection is normal. ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Vs±14V; RL=8Ω; Rs=50Ω; Gv=30dB; f=1KHz; Tamb=25°C, unless otherwise specified.) Characteristics Symbol Supply Range Vs Total Quiescent Current Iq Input Offset Voltage Non Inverting Input Bias Current Test conditions Min. Typ. Max. ±5 50 Vos -25 Ib Unit ±20 V 100 mA +25 mV 500 nA 8 10 W 7.5 10 W RL=8Ω; 7.5 W Vs=±12.5V; RL=4Ω 7.5 W RL=8Ω; Po=1W; f=1KHz 0.03 % THD=10%; RL=8Ω; Output Power Po Vs=±12.5V; RL=4Ω THD=1%; 0.7 RL=8Ω; % Po=0.1~5W; Total Harmonic Distortion THD f=100Hz~15KHz RL=4Ω; Po=1W; f=1KHz 0.02 % 1 RL=4Ω; Vs=±10V; % Po=0.1~5W; f=100Hz~15KHz Cross Talk CT Slew Rate SR Open Loop Voltage Gain GV Total Input Noise eN f=1KHz f=10KHz 70 dB 50 60 dB 6.5 8 V/µs 80 dB A curve 3 f=20Hz~22KHz 4 µV 8 µV (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 2 of 11 SA7269 (Continued) Characteristics Symbol Input Resistance Ri Supply Voltage Rejection (each channel) Thermal Shut-down Test conditions Junction Temperature SVR Min. Typ. 15 20 KΩ 60 dB 145 °C Fr=100Hz; Vripple=0.5Vrms Tj Max. Unit Mute Function [ref: +Vs] Mute /Play Threshold Mute Attenuation VTMUTE -7 -6 AM 60 70 VTST-BY -3.5 -2.5 -5 V dB Stand-by Function [ref: +Vs] Stand-by /Mute Threshold -1.5 V Stand-by Attenuation AST-BY 110 dB Quiescent Current @ Stand-by Iq ST-BY 3 6 REV:1.2 2006.05.25 Page 3 of 11 mA PIN CONFIGURATION HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn SA7269 PIN DESCRIPTION Pin No. Pin Name I/O 2 -Vs -- Negative power 2 3 OUT 1 O Output1 3 5 +Vs -- Positive power 4 6 OUT 2 O Output2 5 7 MUTE / ST-BY I Mute /stand-by function 6 8 -Vs -- Negative power 7 9 IN+(2) I Inverting Input 2 8 10 IN-(2) I Non inverting input 2 9 12 GND -- Ground 10 13 IN-(1) I Non inverting input 1 14 IN+(1) I Inverting input 1 1,4,11,15 NC -- Not connected HSIP-11 HSIP-15 1 11 Pin Description FUNCTION DESCRIPTION MUTE STAND-BY FUNCTION The MUTE/ST-BY controls the amplifier status by two different thresholds, referred to +Vs. Ø When MUTE/ST-BY higher than = +Vs - 2.5V the amplifier is in Stand-by mode and the final stage generators are off. Ø When MUTE/ST-BY is between +Vs - 2.5V and +Vs- 6V the final stage current generators are switched on and the amplifier is in mute mode Ø When MUTE/ST-BY is lower than +Vs - 6V the amplifier is play mode. Power Dissipation and Heat Sinking The SA7269 must always be operated with a heat sink. In order to determine the appropriate heat sink for a given application, the power dissipation of the SA7269 in that application must be known. When the load is resistive, the maximum average power that the IC will be required to dissipate is approximately: PD(MAX)=Vs2/π2RL+PQ Where VS is the total power supply voltage across the SA7269, RL is the load resistance PQ is the quiescent power dissipation of the amplifier. The above equation is only an approximation which assume an “ideal”class B output stage and constant power dissipation in all other parts of the circuit. The curves of “Power Dissipation vs. Power Output”give a better representation of the behavior of the SA7269 with various power supply voltages and resistive loads. As an example, if the SA7269is operated on a ±14V power supply with a resistive load of 8Ω, it can develop up to 11.5W of internal power dissipation. If the die temperature is to remain below 150°C for ambient temperatures up to 50°C, the total junction-to-ambient thermal resistance must be less than: (150°C 50°C)/11.5W 8.7°C/W Using Rth(j-c) = 2°C /W, the sum of the case-to-heat-sink interface thermal resistance and the heat-sink-toambient thermal resistance must be less than 6.7°C/W. The case-to-heat-sink thermal resistance of the HSIP-11 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 4 of 11 SA7269 package varies with the mounting method used. A metal-to-metal interface will be about 1°C /W if lubricated, and about 1.2°C /W if dry. If a mica insulator is used, the thermal resistance will be about 1.6°C /W lubricated and 3.4°C /W dry. For this example, we assume a lubricated mica insulator between the SA7269 and the heat sink. The heat sink thermal resistance must then be less than: 8.7°C/W-2°C/W-1.6°C/W 5.1°C/W The thermal requirements can become more difficult when an amplifier is driving a reactive load. For a given magnitude of load impedance, a higher degree of reactance will cause a higher level of power dissipation within the amplifier. As a general rule, the power dissipation of an amplifier driving a 60º reactive load (usually considered to be a worst-case loudspeaker load) will be roughly that of the same amplifier driving the resistive part of that load. For example, a loudspeaker may at some frequency have an impedance with a magnitude of 8Ω and a phase angle of 60º. The real part of this load will then be 4Ω, and the amplifier power dissipation will roughly follow the curve of power dissipation with a 4Ω load. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 5 of 11 SA7269 TYPICAL APPLICATION CIRCUIT IN SPLIT SUPPLY +Vs C4 1000 F C5 0.1 F 3 +Vs 5 MUTE/ST-BY OUT 2 4 Vpin5 R5 18K 7 IN+(2) IN+(2) C1 1 F IN-(2) 8 R6 560 SA7269 9 GND OUT 1 2 R8 18K IN+(1) C2 1 F R7 4.7 C8 100nF 11 IN+(1) -Vs 1 -Vs IN-(1) 10 R9 560 -Vs 6 C6 1000 F R10 4.7 C9 100nF C7 0.1 F +Vs SW1 B R1 A C3 1 F R2 15K Vpin5 Q1 10K R4 15K Dz SW2 A R3 18K B SW1 SW2 A A Stand-by A B Stand-by B B Mute B A Play Note: Figures for the SA7269. TYPICAL APPLICATION CIRCUIT IN SINGLE SUPPLY Note: Figures for the SA7269. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 6 of 11 SA7269 ELECTRICAL CHARACTERISTICS CURVES (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 7 of 11 SA7269 Power dissipation (W) Power dissipation (W) (Continued) PC BOARD AND COMPINENTS LAYOUT OF THE TYPICAL APPLICATION IN SPLIT SUPPLY HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 8 of 11 SA7269 APPLICATION SUGGEST The recommended values of the external components are those shown are the Typical Application Circuit in Split Supply: COMPONENTS RECOMMENDED VALUE LARGER THAN PURPOSE RECOMMENDED SMALLER THAN RECOMMENDED VALUE VALUE Increase of Dz R1 10KΩ Mute Circuit R2 15KΩ Mute Circuit R3 18KΩ Mute Circuit R4 15KΩ Mute Circuit R5, R8 18KΩ Closed Loop Gain Increase of Gain R6, R9 560Ω Setting* Decrease of Gain R7, R10 4.7Ω C1, C2 1µF C3 1µF C4, C6 1000µF Supply Bypass Danger of Oscillations C5, C7 0.1µF Supply Bypass Danger of Oscillations C8, C9 0.1µF Dz 5.1V Mute Circuit Q1 BC107 Mute Circuit * Closed loop gain has to be Frequency Stability Biasing Current VMUTE/STBY Shifted VMUTE/STBY Downward Upward VMUTE/STBY Shifted VMUTE/STBY Upward Downward VMUTE/STBY Shifted VMUTE/STBY Upward Downward Danger of Oscillations Shifted Shifted Danger of Oscillations Input DC Higher Low Frequency Decoupling Cutoff St-By/Mute Time Constant Larger On/Off Time Smaller On/Off Time Frequency Stability 25dB. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Shifted REV:1.2 2006.05.25 Page 9 of 11 SA7269 PACKAGE OUTLINE HSIP-11 Unit: mm 19.90±0.20 4.75±0.25 2.30±0.30 1.50±0.10 3.75±0.10 0.91±0.05 2.50±0.15 0.52±0.03 1.70±0.25 4.55±0.30 5.08±0.35 17.00±0.25 20.05±0.20 Unit: mm 22.30±0.30 22.10±0.40 18.68±0.35 17.75±0.25 4.60±0.20 10.70±0.25 1.00±0.15 2.80±0.20 4.00±0.15 HSIP-15 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.2 2006.05.25 Page 10 of 11