TDA7269A

TDA7269A 14W+14W STEREO AMPLIFIER WITH MUTE & ST-BY ■ ■ ■ ■ ■ ■ ■ ■ WIDE SUPPLY VOLTAGE RANGE UP TO +20V SPLIT SUPPLY HHIGH OUTPUT POWER 14+14W @THD = 10%, RL= 8Ω, VS = ±16V NO POP AT TURN-ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW Iq) SHORT CIRCUIT PROTECTION TO GND THERMAL OVERLOAD PROTECTION Multiwatt11 ORDERING NUMBER: TDA7269A DESCRIPTION The TDA7269A is class AB Dual Audio Power amplifier assembled in the Multiwatt package, specially de- signed for high quality sound application as Hi-Fi music centers and stereo TV sets. Figure 1. Typical Application Circuit +VS 15K 1000µF 1µF MUTE/ ST-BY IN (L) 7 +5V + 4 OUT (L) 8 IN- (L) - 1µF 15K 3 5 18K GND 4.7Ω 18K 9 RL (L) 100nF 560Ω µP 10 IN- (R) 560Ω 18K 1µF IN (R) 11 - 2 + 1 6 -VS OUT (R) 4.7Ω RL (R) 100nF 1000µF D94AU085 June 2003 1/9 TDA7269A ABSOLUTE MAXIMUM RATINGS Symbol Parameter VS DC Supply Voltage IO Output Power Current (internally limited) Ptot Total Power Dissipation (Tamb = 70°C) Top Operating Temperature Tstg, Tj Storage and Junction Temperature Value Unit ±22 V 3 A 40 W 0 to 70 °C -40 to 150 °C Value Unit 2.8 °C/W PIN CONNECTION (Top view) 11 IN+(1) 10 IN-(1) 9 GND 8 IN-(2) 7 IN+(2) 6 -VS 5 MUTE 4 OUTPUT(2) 3 +VS 2 OUTPUT(1) 1 -VS TAB CONNECTED TO PIN 6 D95AU316 THERMAL DATA Symbol Parameter Rth j-case Thermal Resistance Junction-case Max. Figure 2. Single Supply Application +VS D1 5.1V R1 10K R3 15K C1 1µF C5 1000µF MUTE PLAY 5V 0 MUTE Q1 BSX33 R2 15K C2 100µF IN (L) 3 5 7 + 4 OUT (L) 8 IN- (L) - C3 1µF 9 C4 1µF IN (R) 11 C6 0.1µF C9 470µF R4 30K R5 1K + 2 IN- (R) R8 4.7Ω C7 0.1µF OUT (L) C10 470µF 10 1 6 GND OUT (R) R6 30K R7 1K R9 4.7Ω C8 0.1µF D96AU444A 2/9 OUT (R) TDA7269A ELECTRICAL CHARACTERISTCS (Refer to the test circuit VS = ±16V; RL = 8Ω; RS = 50Ω; GV = 30dB, f = 1KHz; Tamb = 25°C, unless otherwise specified) Symbol VS Iq VOS Parameter Supply Voltage Range Min. PO Output Power Total Harmonic Distortion V RL = 4Ω ±5 ±15 V 100 mA 25 mV 60 -25 500 nA THD = 10%; RL = 8Ω; VS = ±12.5V; RL = 4Ω; 12 8 14 10 W W THD = 1%; RL = 8Ω; VS = ±12.5V; RL = 4Ω; 9 6 11 7.5 W W 0.03 % RL = 8Ω; PO = 1W; f = 1KHz; 0.7 RL = 4Ω; PO = 1W; f = 1KHz; 0.02 RL = 4Ω; VS = ±10V; PO = 0.1 to 5W; f = 100Hz to 15KHz; Cross Talk SR Slew Rate GOL Open Loop Voltage Gain eN Ri SVR Tj Total Output Noise f = 1KHz; f = 10KHz; % % 1 % 50 70 60 dB dB 6.5 10 V/µs 80 dB A Curve f = 20Hz to 22KHz Input Resistance Supply Voltage Rejection (each channel) Unit ±20 RL = 8Ω; PO = 0.1 to 7W; f = 100Hz to 15KHz; CT Max. ±5 Input Offset Voltage Non Inverting Input Bias Current Typ. RL = 8Ω Total Quiescent Current Ib THD Test Condition 3 4 15 f = 100Hz; VR = 0.5V Thermal Shut-down Junction Temperature 8 µV µV 20 KΩ 60 dB 145 °C MUTE FUNCTION [ref +VS] (*) VTMUTE AMUTE Mute /Play threshold -7 -6 Mute Attenuation 60 70 -3.5 -2.5 -5 V dB STAND-BY FUNCTIONS [ref: +VS] (only for Split Supply) VTST-BY Stand-by Mute threshold AST-BY Stand-by Attenuation IqST-BY Quiescent Current @ Stand-by -1.5 110 3 V dB 6 mA (*) In mute condition the current drawn from Pin 5 must be ≤650µA 3/9 TDA7269A MUTE STAND-BY 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 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 3. +VS (V) 20 t -VS -20 VIN (mV) Vpin5 (V) VS VS-2.5 VS-6 VS-10 Iq (mA) 0 VOUT (V) OFF PLAY STDBY PLAY OFF STDBY STDBY MUTE 4/9 D94AU086 MUTE MUTE MUTE TDA7269A Figure 4. Test and Application Circuit (Stereo Configuration) +VS R2 C3 MUTE/ ST-BY Q1 R1 IN (L) SW1 ST-BY DZ 7 R3 + 4 OUT (L) 8 IN- (L) - GND C5 3 5 C1 R4 C4 +VS R7 R5 9 RL (L) C8 R6 SW2 MUTE 10 R9 IN- (R) R8 C2 IN (R) 11 - 2 OUT (R) + R10 6 1 -VS C7 RL (R) C9 C6 D94AU087B APPLICATION SUGGESTIONS (Demo Board Schematic) The recommended values of the external components are those shown the demoboard schematic different values can be used, the following table can help the designer. COMPONENT SUGGESTION VALUE R1 10KΩ Mute Circuit Increase of Dz Biasing Current R2 15KΩ Mute Circuit Vpin #5 Shifted Downward Vpin #5 Shifted Upward R3 18KΩ Mute Circuit Vpin #5 Shifted Upward Vpin #5 Shifted Downward R4 15KΩ Mute Circuit Vpin #5 Shifted Upward Vpin #5 Shifted Downward R5, R8 18KΩ Closed Loop Gain Setting (*) Increase of Gain R6, R9 560Ω R7, R10 4.7Ω Frequency Stability C1, C2 1µF Input DC Decoupling C3 1µF St-By/Mute Time Constant C4, C6 1000µF Supply Voltage Bypass Danger of Oscillations C5, C7 0.1µF Supply Voltage Bypass Danger of Oscillations C8, C9 0.1µF Frequency Stability Dz 5.1V Mute Circuit PURPOSE LARGER THAN RECOMMENDED VALUE SMALLER THAN RECOMMENDED VALUE Decrease of Gain Danger of Oscillations Danger of Oscillations Higher Low Frequency Cutoff Larger On/Off Time Smaller On/Off Time (*) Closed loop gain has to be ≥25dB 5/9 TDA7269A BRIDGE APPLICATION Another application suggestion concerns the Bridge configuration , where the two power amplifiers are connected as shown by the schematic diagrams of figure 5 “Split Power Supply” , and figure 6 “Single Power Supply”. This application shows,however, some operative limits due to dissipation and current capability of the output stage. For this reason we recommend to use the TDA7269A in BTL with the following supply voltages depending on the used load impedance (for the single supply consider double Vs) : ±Vs (V) Rload (ohm) 14 8 11 6 10 4 The detected characteristics of THD vs Pout are shown in figg: 7, 8 and 9 for the different load impedances. With Rload = 8ohm , Vs = ±14V the maximum output power obtainable is 30W at THD = 10% (fig. 9). With Rload = 6ohm , Vs = ±12V the maximum output power obtainable is 28W at THD = 10% (fig. 8). With Rload = 4ohm , Vs = ±10V the maximum output power obtainable is 20W at THD=10% (fig. 7). We suggest not to exceed the suggested supply voltages in order to avoid the current limiter intervention. Figure 5. Split Power Supply Application Diagram ST-BY/ MUTE C3 0.1µF C1 IN 5 7 3 + R5 4.7Ω 4 - 1µF R4 560Ω 10 1µF - R3 36KΩ 2 + 1 R6 4.7Ω 6 -VS D94AU190 6/9 C7 0.1µF R2 560Ω 9 11 +VS R1 36KΩ 8 C2 C4 1000µF C5 0.1µF C6 1000µF C9 0.1µF RL C8 5.6nF TDA7269A Figure 6. Single Power Supply Application Diagram +VS 5.1V 10K 15K 1µF 1000µF MUTE PLAY 5V 0 MUTE 3 5 7 IN (L) BSX33 + 4 OUT (L) 8 IN- (L) - 1µF 15K 30K 4.7Ω 0.1µF 9 100µF 1µF 0.1µF OUT 1K IN (R) 11 + 2 IN- (R) 30K 10 1 4.7Ω OUT (R) 0.1µF 1K 6 GND 5.6nF D03AU1518 Figure 7. Distortion vs Output Power Figure 9. Distortion vs Output Power THD(%) 10 THD(%) 10 5 5 2 Vs =+/- 10V 1 Rload =4 ohm 0.5 Vs =+/- 14V 1 Rload =8 ohm f=1KHz 0.5 f=1KHz 0.2 2 0.2 0.1 0.1 0.05 0.05 0.02 0.02 0.01 600m 1 2 3 4 5 6 7 89 20 30 40 Pout (W) 0.01 600m 1 2 3 4 5 6 7 89 Pout (W) 20 30 40 Figure 8. Distortion vs Output Power THD(%) 10 5 2 Vs =+/- 12V 1 Rload =6 ohm 0.5 f=1KHz 0.2 0.1 0.05 0.02 0.01 600m 1 2 3 4 5 6 7 89 20 30 40 Pout (W) 7/9 TDA7269A mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 D 0.063 1 E 0.49 0.039 0.55 0.019 0.022 F 0.88 0.95 0.035 G 1.45 1.7 1.95 0.057 0.067 0.077 G1 16.75 17 17.25 0.659 0.669 0.679 H1 19.6 0.037 0.862 0.874 0.886 0.87 0.886 0.772 H2 20.2 L 21.9 22.2 L1 21.7 22.1 L2 17.4 L3 17.25 L4 10.3 22.5 0.795 22.5 0.854 18.1 0.685 17.5 17.75 0.679 0.689 0.699 10.7 10.9 0.406 0.421 0.429 0.713 L7 2.65 2.9 0.104 M 4.25 4.55 4.85 0.167 0.179 0.191 0.114 M1 4.73 5.08 5.43 0.186 0.200 0.214 S 1.9 2.6 0.075 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 8/9 OUTLINE AND MECHANICAL DATA 0.102 Multiwatt11 V TDA7269A 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 © 2002 STMicroelectronics - All Rights Reserved Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 9/9