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TDA7384A 4 x 42W quad bridge car radio amplifier Features High output power capability: - 4 x 42W/4 max. - 4 x 27W/4 @ 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) - No external compensation - No bootstrap capacitors Flexiwatt25 ESD Protections: Description The TDA7384A is a new technology class AB audio power amplifier in Flexiwatt 27 package designed for high end car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7384A 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 Reversed battery Device summary Order code TDA7384A Table 1. Package Flexiwatt25 Packing Tube December 2007 Rev 2 1/14 www.st.com 1 Contents TDA7384A Contents 1 2 Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 2.2 2.3 2.4 2.5 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 P.C.B. and component layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.1 3.2 3.3 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Stand-by and Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2/14 TDA7384A List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3/14 List of figures TDA7384A List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pins connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Standard test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Components and top copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Bottom copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Quiescent current vs. supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Output power vs. supply voltage (4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Power dissipation & efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4/14 TDA7384A Block and pins connection diagrams 1 Block and pins connection diagrams Figure 1. Block diagram Vcc1 Vcc2 470F ST-BY NC OUT1+ IN1 0.1F OUT1PW-GND OUT2+ IN2 0.1F OUT2PW-GND OUT3+ IN3 0.1F OUT3PW-GND OUT4+ IN4 0.1F AC-GND 0.47F SVR 47F D99AU1018MOD 100nF MUTE OUT4PW-GND TAB S-GND Figure 2. Pins connection 1 25 P-GND2 OUT2- ST-BY OUT2+ OUT1- OUT1+ SVR IN1 IN2 S-GND IN4 IN3 AC-GND OUT3+ P-GND1 P-GND3 OUT3- TAB MUTE OUT4- OUT4+ D94AU159B P-GND4 N.C. VCC VCC 5/14 Electrical specifications TDA7384A 2 2.1 Electrical specifications Absolute maximum ratings Table 2. Symbol VS VS (DC) VS (pk) IO Ptot Tj Tstg Absolute maximum ratings Parameter Operating supply voltage DC supply voltage Peak supply voltage (t = 50ms) Output peak current: Repetitive (duty cycle 10% at f = 10Hz) Non repetitive (t = 100s) Power dissipation, (Tcase = 70C) Junction temperature Storage temperature Value 18 28 50 4.5 5.5 80 150 - 55 to 150 Unit V V V A A W C C 2.2 Thermal data Table 3. Symbol Rth j-amb Thermal data Parameter Thermal resistance junction to ambient max. Value 1 Unit C/W 2.3 Table 4. Electrical characteristics Electrical characteristics (VS = 14.4V; f = 1KHz; Rg = 600; RL = 4;Tamb = 25C; Refer to the test and application diagram (Figure 3), unless otherwise specified.) Parameter Quiescent current Output offset voltage RL = Play mode -80 25 26 Test condition Min. 120 Typ. 190 Max. 350 100 +80 27 1 THD = 10%; VS = 14.4V THD = 10%; VS = 13.2V Max. output Distortion power(1) VS = 14.4V Po = 4W 24 20 38 27 22 42 0.04 0.15 Unit mA mV mV dB dB W W W % Symbol Iq1 VOS dVOS Gv Gv Po Po max THD During mute ON/OFF output ITU R-ARM weighted offset voltage Voltage gain Channel gain unbalance Output power 6/14 TDA7384A Table 4. Electrical specifications Electrical characteristics (continued) (VS = 14.4V; f = 1KHz; Rg = 600; RL = 4;Tamb = 25C; Refer to the test and application diagram (Figure 3), unless otherwise specified.) Parameter Output noise Bw = 20Hz to 20KHz Supply voltage rejection High cut-off frequency Input Impedance f = 1KHz; Po = 4W Cross talk f = 10KHz; Po = 4W St-By current consumption St-By pin current VSt-By = 0V VSt-By = 1.2 to 2.6V 3.5 1.5 80 3.5 1.5 6.5 8.5 90 50 60 20 1 dB A A V V dB V V V V f = 100Hz; Vr = 1Vrms Po = 0.5W 50 100 70 60 70 65 200 100 70 100 Test condition "A" Weighted Min. Typ. 50 Max. 70 Unit V V dB KHz K dB Symbol eNo SVR fch Ri CT ISB Ipin4 VSB out VSB IN AM VM out VM in St-By OUT threshold voltage (Amp: ON) St-By IN threshold voltage Mute attenuation (Amp: OFF) POref = 4W Mute OUT threshold voltage (Amp: Play) Mute IN threshold voltage (Amp: Mute) (Amp: Mute); Att 80dB; POref = 4W (Amp: Play); Att < 0.1dB; PO = 0.5W VMUTE = 1.2V (Source current) VAM in VS automute threshold 7.6 Ipin22 Muting pin current 5 11 20 A 1. Saturated square wave output. Figure 3. Standard test and application circuit C8 0.1F C7 2200F Vcc1-2 R1 ST-BY 10K R2 MUTE 47K C1 IN1 0.1F IN2 C2 0.1F IN3 C3 0.1F IN4 C4 0.1F S-GND 14 13 16 C5 0.47F SVR C6 47F 10 25 N.C. 1 TAB D95AU335C Vcc3-4 6 20 9 8 OUT1 4 C9 1F 22 C10 1F 11 7 5 2 3 OUT2 12 17 18 OUT3 15 19 21 24 23 OUT4 7/14 Electrical specifications TDA7384A 2.4 P.C.B. and component layout Referred to Figure 3: Standard test and application circuit. Figure 4. Components and top copper layer Figure 5. Bottom copper layer 8/14 TDA7384A Electrical specifications 2.5 Figure 6. Electrical characteristic curves Quiescent current vs. supply voltage Figure 7. Quiescent current vs. supply current Figure 8. Output power vs. supply voltage (4) Figure 9. Distortion vs. output power Figure 10. Distortion vs. frequency Figure 11. Supply voltage rejection vs. frequency 9/14 Electrical specifications TDA7384A Figure 12. Output noise vs. source resistance Figure 13. Power dissipation & efficiency vs. output power 10/14 TDA7384A Application hints 3 Application hints Referred to the circuit of Figure 3. 3.1 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 10F. 3.2 Input stage The TDA7384A'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 (0.1F) is adopted, the low frequency cut-off will amount to 16 Hz. 3.3 Stand-by and Muting Stand-by and Muting facilities are both 3.3V 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 10A normally flows out of pin 22, the maximum allowable muting-series resistance (R2) is 70K, which is sufficiently high to permit a muting capacitor reasonably small (about 1F). If R2 is higher than recommended, the involved risk will be that the voltage at pin 23 may rise to above the 1.5V 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. 11/14 Package information TDA7384A 4 Package information In order to meet environmental requirements, ST (also) offers these devices in ECOPACK(R) packages. ECOPACK(R) packages are lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 14. Flexiwatt25 mechanical data and 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 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 1.05 0.42 0.57 1.20 24.25 29.30 MIN. 0.175 0.070 0.029 0.014 0.031 0.935 1.139 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 0.041 0.016 0.022 0.047 0.955 1.153 OUTLINE AND MECHANICAL DATA 22.07 18.57 15.50 7.70 22.87 19.37 15.90 7.95 0.869 0.731 0.610 0.303 0.904 0.762 0.626 0.313 3.70 3.60 4.30 4.40 0.145 0.142 0.169 0.173 5 (T p.) 3 (Typ.) 20 (Typ.) 45 (Typ.) Flexiwatt25 (vertical) (1): dam-bar protusion not included (2): molding protusion included V C B V V3 H3 H H1 H2 R3 R4 V1 R2 R L L1 A L4 O L2 N L3 V1 V2 R2 L5 G G1 F FLEX25ME R1 R1 R1 E M M1 D Pin 1 7034862 12/14 TDA7384A Revision history 5 Revision history Table 5. Date 5-Dec-2001 11-Dec-2007 Document revision history Revision 1 2 Initial release. Updated in the Table 4 the values of the parameters Po and Po max . Changes 13/14 TDA7384A Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. 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