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| www..com TDA7292 TARGET SPECIFICATION 40 + 40W STEREO AMPLIFIER WITH MUTE & ST-BY 1 FEATURES WIDE SUPPLY VOLTAGE RANGE (UP TO 35V ABS MAX.) SPLIT SUPPLY HIGH OUTPUT POWER 40 + 40 W @ THD=10%, RL = 8, VS 26V NO POP AT TURN ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW IQ) SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION Figure 1. Package Multiwatt11 Table 1. Order Codes Part Number TDA7292 Package Multiwatt11 2 DESCRIPTION designed for high quality sound application as HiFi music centers and stereo TV sets. The TDA7292 is class AB dual Audio power amplifier assembled in the Multiwatt package, specially Figure 2. Typical Application Circuit in Split Supply +VS 1000F MUTE/ ST-BY IN (L) 1F 3 15K 1F 5 7 + - 4 OUT (L) 18K 4.7 100nF 560 8 15K +5V P 18K GND 9 10 IN- (L) RL (L) IN- (R) 560 18K 1F IN (R) 11 + 1 6 -VS 1000F 2 OUT (R) 4.7 100nF RL (R) D94AU085 April 2005 This is preliminary information on a new product now in development. Details are subject to change without notice. Rev. 1 1/9 TDA7292 www..com Table 2. Absolute Maximum Ratings Symbol VS IO Top Tstg, Tj DC Supply Voltage Output Peak Current (internally limited) Operating Temperature Storage and Junction Temperature Description Value 35 4.5 0 to 70 -40 to +150 Unit V A C C Table 3. Thermal Data Symbol Rth j case Parameter Thermal Resistance Junction-case Typ. Value 1.5 Unit C/W Figure 3. Pin Connection (Top view) 11 10 9 8 7 6 5 4 3 2 1 IN+(1) IN-(1) GND IN-(2) IN+(2) -VS MUTE/St-By OUTPUT(2) +VS OUTPUT(1) -VS TAB CONNECTED TO PIN 6 D95AU316 2/9 TDA7292 Table 4. Electrical www..com Characteristcs (Refer Tamb = 25C, unless otherwise specified.) Symbol VS Iq VOS Ib PO Parameter Supply Range Total Quiescent Current Input Offset Voltage Non Inverting Input Bias Current Output Power THD = 10%; RL = 8 VS 18V, RL = 4 THD = 1% RL = 8 ; VS 18V; RL = 4 IPeak THD SR Gol eN Ri SVR Tj Output Peak Current Total Harmonic Distortion Slew Rate Open Loop Voltage Gain Total Input Noise Input Resistance Supply Voltage Rejection Thermal Shut-down F = 20Hz - 22kHz (Internally Limited) RL = 8 , Po = 1W 3.6 -20 500 40 31 to the test circuit, VS = 26V; RL = 8; GV = 30dB; f = 1kHz; Test Condition Min. Typ. Max. Unit V mA mV nA W W 8 50 33 130 +20 30 24 4.7 0.02 11 80 4 20 75 145 W W A % V/ms dB V k dB C MUTE FUNCTION { ref.: +Vs } VTmute Am Mute / Play Threshold Mute attenuation -7 -6 75 -5 V dB STANT-BY FUNCTION { ref.: +Vs } VTst-by Ast-by Iq Stand-By / Mute Threshold Stand-By Attenuation Quiescent Current @ St-By -3.5 -2.5 110 8 -1.5 V dB mA 3/9 TDA7292 3 MUTE STAND-BY www..com FUNCTION The pin 5 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to +VS. - when Vpin5 higher than = +VS - 2.5V the amplifier is in Stand-by mode and the final stage generators are off - when Vpin5 is between +VS - 2.5V and +VS - 6V the final stage current generators are switched on and the amplifier is in mute mode - when Vpin5 is lower than +VS - 6V the amplifier is play mode. Figure 4. MUTE/ST-By thresholds on pin 5. +VS (V) 26 t -VS -26 VIN (mV) Vpin5 (V) VS VS-2.5 VS-6 VS-10 Iq (mA) 0 VOUT (V) OFF STDBY MUTE PLAY STDBY PLAY OFF STDBY D04AU1570 MUTE MUTE MUTE 4/9 TDA7292 Figure 5. Test and www..com Application Circuit (stereo configuration) +VS C4 C5 R2 C3 MUTE/ ST-BY IN (L) C1 +VS 5 7 + 8 3 R1 SW1 ST-BY DZ Q1 4 OUT (L) R5 IN- (L) R6 R7 C8 RL (L) R4 SW2 MUTE R3 GND 9 10 IN- (R) R8 R9 C2 IN (R) 11 + 1 6 -VS C7 2 OUT (R) R10 C9 RL (R) C6 D94AU087B Figure 6. PC Board and Components Layout of the figure 5 5/9 TDA7292 4 APPLICATIONS www..com SUGGESTION (ref. to Figure 5) The recommended values of the external components are those shown are the demo board schematic different values can be used: the following table can help the designer. Table 5. Recommended values of the external components on the TDA7292 demo board schematic Components R1 R2 R3 R4 R5, R8 R6, R9 R7, R10 C1, C2 C3 C4, C6 C5, C7 C8, C9 Dz Q1 Recomm. Value 10K 15K 18K 15K 18K 560 4.7 1F 1F 1000F 0.1F 0.1F 5.1V BC107 Purpose Mute Circuit Mute Circuit Mute Circuit Mute Circuit Closed Loop Gain Setting (*) Larger Than Recommended Value Increase of Dz Biasing Current Smaller Than Recommended Value Vpin # 5 Shifted Downward Vpin # 5 Shifted Upward Vpin # 5 Shifted Upward Vpin # 5 Shifted Upward Increase of Gain Decrease of Gain Danger of Oscillations Larger On/Off Time Danger of Oscillations Higher Low Frequency Cutoff Smaller On/Off Time Danger of Oscillations Danger of Oscillations Vpin # 5 Shifted Downward Vpin # 5 Shifted Downward Frequency Stability Input DC Decoupling St-By/Mute Time Constant Supply Voltage Bypass Supply Voltage Bypass Frequency Stability Mute Circuit Mute Circuit (*) Closed loop gain has to be => 29dB Table 6. Mute, Stand-by Truth Table SW1 B B A A SW2 A B A B STAND-BY STAND-BY MUTE PLAY Figure 7. Typical Application Circuit in Single Supply D1 5.1V R1 10K PLAY 5V 0 MUTE C1 1F R3 15K MUTE Q1 BSX33 R2 15K C2 100F C3 1F IN (L) 5 7 + 8 9 C4 1F IN (R) 11 IN- (L) 3 4 OUT (L) R4 30K R5 1K + 2 IN- (R) R6 30K R7 1K C9 470F +VS C5 1000F C6 0.1F R8 4.7 C7 0.1F C10 470F OUT (L) 10 1 6 GND OUT (R) R9 4.7 C8 0.1F OUT (R) D96AU444A 6/9 TDA7292 Figure 8. Multiwatt www..com DIM. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 21.9 21.7 17.4 17.25 10.3 2.65 4.25 4.73 1.9 1.9 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.88 1.45 16.75 19.6 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.43 2.6 2.6 3.85 0.862 0.854 0.685 0.679 0.406 0.104 0.167 0.186 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.87 1.7 17 1 0.55 0.95 1.95 17.25 0.019 0.035 0.057 0.659 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.214 0.102 0.102 0.152 0.067 0.669 11 Mechanical Data & Package Dimensions mm inch MAX. 5 2.65 1.6 0.039 0.022 0.037 0.077 0.679 MIN. TYP. MAX. 0.197 0.104 0.063 MIN. TYP. OUTLINE AND MECHANICAL DATA Multiwatt11 (Vertical) 0016035 H 7/9 TDA7292 Table 7. Revision www..com Date November 2004 History Revision 1 First Issue Description of Changes 8/9 TDA7292 www..com Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2004 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 9/9 |
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