TDA7388 4 X 41W QUAD BRIDGE CAR RADIO AMPLIFIER 1 ■ ■ ■ ■ ■ ■ ■ ■ ■ 2 ■ ■ ■ ■ ■ FEATURES Figure 1. Package HIGH OUTPUT POWER CAPABILITY: 4 x 41W/4Ω MAX. 4 x 25W/4Ω @ 14.4V, 1KHz, 10% LOW DISTORTION LOW OUTPUT NOISE ST-BY FUNCTION MUTE FUNCTION AUTOMUTE AT MIN. SUPPLY VOLTAGE DETECTION LOW EXTERNAL COMPONENT COUNT: – INTERNALLY FIXED GAIN (26dB) Flexiwatt25 Table 1. Order Codes Part Number Package TDA7388 Flexiwatt25 ■ REVERSED BATTERY ESD – NO EXTERNAL COMPENSATION 3 DESCRIPTION – NO BOOTSTRAP CAPACITORS The TDA7388 is a new technology class AB Audio Power Amplifier in Flexiwatt 25 package designed for high end car radio applications. ■ PROTECTIONS: Thanks to the fully complementary PNP/NPN output configuration the TDA7388 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced components count allows very compact sets. OUTPUT SHORT CIRCUIT TO GND, TO VS, ACROSS THE LOAD VERY INDUCTIVE LOADS OVERRATING CHIP TEMPERATURE WITH SOFT THERMAL LIMITER LOAD DUMP VOLTAGE FORTUITOUS OPEN GND Figure 2. Block and Application Diagram Vcc1 Vcc2 470µF 100nF ST-BY N.C. MUTE OUT1+ IN1 OUT10.1µF PW-GND OUT2+ IN2 OUT20.1µF PW-GND OUT3+ IN3 OUT30.1µF PW-GND OUT4+ IN4 OUT40.1µF PW-GND AC-GND 0.47µF SVR TAB S-GND 47µF D99AU1018 July 2005 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ Rev. 1 1/10 TDA7388 Table 2. Absolute Maximum Ratings Symbol Value Unit Operating Supply Voltage 18 V VCC (DC) DC Supply Voltage 28 V VCC (pk) Peak Supply Voltage (t = 50ms) 50 V Output Peak Current: Repetitive (Duty Cycle 10% at f = 10Hz) Non Repetitive (t = 100µs) 4.5 5.5 A A Power dissipation, (Tcase = 70°C) 80 W Tj Junction Temperature 150 °C Tstg Storage Temperature – 55 to 150 °C VCC IO Ptot Parameter Figure 3. Pin Connection HSD P-GND4 MUTE OUT4- VCC OUT4+ OUT3- OUT3+ P-GND3 IN3 AC-GND IN4 IN2 S-GND IN1 SVR OUT1+ P-GND1 VCC OUT1- ST-BY OUT2+ OUT2- TAB 25 P-GND2 1 D94AU159A Table 3. Thermal Data Symbol Parameter Rth j-amb Thermal Resistance Junction to Case max Value Unit 1 °C/W 2/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 Table 4. Electrical Characteristcs (VS = 14.4V; f = 1KHz; Rg = 600Ω; RL = 4Ω;Tamb = 25°C; Refer to the Test and application diagram, unless otherwise specified.) Symbol Parameter Test Condition Quiescent Current RL = ∞ VOS Output Offset Voltage Play Mode ∆VOS During Mute ON/OFF Output Offset Voltage Iq1 Gv Voltage Gain Po Output Power Min. Typ. Max. Unit 120 190 350 mA ±80 mV ±80 mV 27 dB 25 26 THD = 10%; VS = 14.4V 22 26 W Max.Output Power (*) VS = 14.4V 38 41 W THD Distortion Po = 4W eNo Output Noise Po max 0.04 0.15 % "A" Weighted 50 70 µV Bw = 20Hz to 20KHz 70 100 µV SVR Supply Voltage Rejection f = 100Hz; Vr = 1Vrms 50 65 dB fch High Cut-Off Frequency Po = 0.5W 100 200 KHz Ri Input Impedance 70 100 KΩ CT Cross Talk f = 1KHz; Po = 4W 60 70 dB f = 10KHz; Po = 4W 50 60 dB ISB St-By Current Consumption 50 VSB out St-By OUT Threshold Voltage (Amp: ON) VSB IN St-By IN Threshold Voltage (Amp: OFF) Mute Attenuation POref = 4W AM VM out Mute OUT Threshold Voltage (Amp: Play) VM in Mute IN Threshold Voltage (Amp: Mute) VAM in VS Automute Threshold (Amp: Mute); Att ≥ 80dB; POref = 4Ω (Amp: Play); Att < 0.1dB; PO = 0.5Ω Ipin22 Muting Pin Current VMUTE = 1.5V (Source Current) 3.5 V 1.5 80 90 V dB 3.5 5 µA V 1.5 V 7.6 6.5 8.5 V V 11 20 µA (*) Saturated square wave output. ( 3/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 Figure 4. Standard Test and Application Circuit C8 0.1µF C7 2200µF Vcc1-2 Vcc3-4 6 R1 ST-BY 20 9 4 10K R2 C9 1µF MUTE 8 22 47K C10 1µF 5 C1 IN1 2 11 17 12 18 C2 0.1µF IN3 OUT3 19 15 C3 0.1µF 21 14 IN4 C4 0.1µF OUT2 3 0.1µF IN2 OUT1 7 S-GND 24 13 16 C5 0.47µF OUT4 23 10 SVR C6 47µF 25 HSD 1 TAB D95AU335B 4/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 4 P.C.B. AND COMPONENT LAYOUT OF THE FIGURE 4 Figure 5. Components & Top Copper Layer Figure 6. Bottom Copper Layer 5/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 Figure 7. Quiescent Current vs. Supply Voltage Figure 10. Distortion vs. Output Power Figure 8. Quiescent Output Voltage Supply Voltage Figure 11. Distortion vs. Frequency Figure 9. Output Power vs. Supply Voltage Figure 12. Supply Voltage Rejection vs. Frequency. 6/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 Figure 13. Output Noise vs. Source Resistance. 5 Figure 14. Power Dissipation & Efficiency vs. Output Power. APPLICATION HINTS (ref. to the circuit of fig. 4) 5.1 SVR Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF time sequence and, consequently, plays an essential role in the pop optimization during ON/OFF transients. To conveniently serve both needs, ITS MINIMUM RECOMMENDED VALUE IS 10µF. 5.2 INPUT STAGE The TDA7388’S inputs are ground-compatible and can stand very high input signals (± 8Vpk) without any performances degradation. If the standard value for the input capacitors (0.1µF) is adopted, the low frequency cut-off will amount to 16 Hz. 5.3 STAND-BY AND MUTING STAND-BY and MUTING facilities are both CMOS-COMPATIBLE. If unused, a straight connection to Vs of their respective pins would be admissible. Conventional/low-power transistors can be employed to drive muting and stand-by pins in absence of true CMOS ports or microprocessors. R-C cells have always to be used in order to smooth down the transitions for preventing any audible transient noises. Since a DC current of about 10 µA normally flows out of pin 22, the maximum allowable muting-series resistance (R2) is 70KΩ, which is sufficiently high to permit a muting capacitor reasonably small (about 1µF). If R2 is higher than recommended, the involved risk will be that the voltage at pin 22 may rise to above the 1.5 V threshold voltage and the device will consequently fail to turn OFF when the mute line is brought down. About the stand-by, the time constant to be assigned in order to obtain a virtually pop-free transition has to be slower than 2.5V/ms. 7/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 Figure 15. Flexiwatt 25 Mechanical Data & Package Dimensions DIM. A B C D E F (1) G G1 H (2) H1 H2 H3 L (2) L1 L2 (2) L3 L4 L5 M M1 N O R R1 R2 R3 R4 V V1 V2 V3 MIN. 4.45 1.80 0.75 0.37 0.80 23.75 28.90 22.07 18.57 15.50 7.70 3.70 3.60 mm TYP. 4.50 1.90 1.40 0.90 0.39 1.00 24.00 29.23 17.00 12.80 0.80 22.47 18.97 15.70 7.85 5 3.5 4.00 4.00 2.20 2 1.70 0.5 0.3 1.25 0.50 MAX. 4.65 2.00 MIN. 0.175 0.070 1.05 0.42 0.57 1.20 24.25 29.30 0.029 0.014 0.031 0.935 1.139 22.87 19.37 15.90 7.95 0.869 0.731 0.610 0.303 4.30 4.40 0.145 0.142 inch TYP. 0.177 0.074 0.055 0.035 0.015 0.040 0.945 1.150 0.669 0.503 0.031 0.884 0.747 0.618 0.309 0.197 0.138 0.157 0.157 0.086 0.079 0.067 0.02 0.12 0.049 0.019 MAX. 0.183 0.079 OUTLINE AND MECHANICAL DATA 0.041 0.016 0.022 0.047 0.955 1.153 0.904 0.762 0.626 0.313 0.169 0.173 Flexiwatt25 (vertical) 5˚ (T p.) 3˚ (Typ.) 20˚ (Typ.) 45˚ (Typ.) (1): dam-bar protusion not included (2): molding protusion included V C B V H H1 V3 A H2 O H3 R3 L4 R4 V1 R2 L2 N L3 R L L1 V1 V2 R2 D R1 L5 Pin 1 R1 R1 E G G1 F FLEX25ME M M1 7034862 8/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 6 REVISION HISTORY Table 5. Revision History Date Revision July 2005 1 Description of Changes First Issue 9/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ TDA7388 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 © 2005 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 10/10 深圳市品良电子有限公司 联系电话：０７５５－２１２３６２５０ ｗｗｗ．ｂｉｎ－ｌｏｎ．ｃｏｍ．ｃｎ