TDA7388

TDA7388 4 x 45 W quad bridge car radio amplifier Datasheet - production data  Low external component count: – Internally fixed gain (26 dB) – No external compensation – No bootstrap capacitors Protections:  Output short circuit to gnd, to VS, across the load  Very inductive loads '!0'03  Overrating chip temperature with soft thermal limiter Flexiwatt25  Load dump voltage  Fortuitous open GND  Reversed battery  ESD Features Description  High output power capability: – 4 x 45 W / 4  max. – 4 x 26 W / 4  @ 14.4 V, 1 kHz, 10 %  Low distortion  Low output noise  Standby function  Mute function  Automute at min. supply voltage detection The TDA7388 is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed for high end car radio applications. Based on a fully complementary PNP/NPN configuration, the TDA7388 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets. Table 1. Device summary Order code Package Packing TDA7388 Flexiwatt25 Tube September 2013 This is information on a product in full production. DocID14256 Rev 6 1/13 www.st.com 1 Contents TDA7388 Contents 1 Pin connection and test/application diagrams . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2/13 DocID14256 Rev 6 TDA7388 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 DocID14256 Rev 6 3/13 List of figures TDA7388 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. 4/13 Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Standard test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Output power vs. supply voltage (4 Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Distortion vs. output power (4 Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Distortion vs. frequency (4 Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Output noise vs. source resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Total power disipation & efficiency (4 Ohm, sine). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power dissipation vs. average output power (4 Ohm, audio program simulation) . . . . . . . . 9 ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . . 9 Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 DocID14256 Rev 6 TDA7388 Pin connection and test/application diagrams Figure 1. Pin connection (top view) .# 0 '.$ -54% /54 6## /54 /54 /54 0 '.$ ). !# '.$ ). 3 '.$ ). ). 362 /54 0 '.$ 6## /54 34 "9 /54 /54  0 '.$  4!" 1 Pin connection and test/application diagrams '!0'03 Figure 2. Standard test and application circuit # M& # M& 6CC  6CC   2 34 "9    + 2 # M&   -54% + # # M& ).       #M& ). /54   #M&   ). #M& /54  M& ). /54  3 '.$    # M& /54   362 # M&  .#  4!" '!0'03 DocID14256 Rev 6 5/13 Electrical specifications TDA7388 2 Electrical specifications 2.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol Value Unit Operating supply voltage 18 V VS (DC) DC supply voltage 28 V VS (pk) Peak supply voltage (t = 50 ms) 50 V Output peak current: Repetitive (duty cycle 10 % at f = 10 Hz) Non repetitive (t = 100 µs) 4.5 5.5 A Power dissipation, (Tcase = 70 °C) 80 W Tj Junction temperature 150 C Tstg Storage temperature – 55 to 150 C VS IO Ptot 2.2 Parameter Thermal data Table 3. Thermal data Symbol Rth j-case 6/13 Parameter Thermal resistance junction-to-case DocID14256 Rev 6 max. Value Unit 1 °C/W TDA7388 2.3 Electrical specifications Electrical characteristics VS = 14.4 V; f = 1 kHz; Rg = 600 ; RL = 4 ; Tamb = 25 °C; Refer to the test and application diagram (Figure 2), unless otherwise specified. Table 4. Electrical characteristics Symbol Iq1 Parameter Test condition Min. Typ. Max. Unit 120 190 350 mA - - ±100 mV Quiescent current RL = VOS Output offset voltage Play mode dVOS During mute ON/OFF output ITU R-ARM weighted offset voltage see Figure 12 -80 - +80 mV Gv Voltage gain - 25 26 27 dB Po Output power THD = 10 %; VS = 14.4 V 22 26 - W VS = 14.4 V 37 41 - VS = 15.2 V - 45 - Po = 4 W - 0.04 0.15 % "A" Weighted - 50 70 µV Bw = 20 Hz to 20 kHz - 70 100 µV Po max Max.output power(1) W THD Distortion eNo Output noise SVR Supply voltage rejection f = 100 Hz; Vr = 1 Vrms 50 65 - dB fch High cut-off frequency Po = 0.5 W 100 200 - kHz Ri Input Impedance - 70 100 - k CT Cross talk f = 1 kHz; Po = 4 W 60 70 - dB f = 10 kHz; Po = 4 W - 60 - dB ISB Standby current consumption VSt-by = 0V - - 20 µA VSB out Standby OUT threshold voltage (Amp: ON) 3.5 - - V VSB IN Standby IN threshold voltage (Amp: OFF) - - 1.5 V POref = 4 W 80 90 - dB VM out Mute OUT threshold voltage (Amp: play) 3.5 - - V VM in Mute IN threshold voltage (Amp: mute) - - 1.5 V VS automute threshold (Amp: mute); Att.  80 dB; POref = 4 W (Amp: play); Att. < 0.1 dB; PO = 0.5 W - VMUTE = 1.2 V (Source current) 5 AM VAM in Ipin22 Mute attenuation Muting pin current 6.5 7.6 8.5 11 20 V µA 1. Saturated square wave output. DocID14256 Rev 6 7/13 Electrical specifications 2.4 TDA7388 Electrical characteristic curves Figure 3. Quiescent current vs. supply voltage ,GP$   3R :                   9L    5/  c            Figure 4. Output power vs. supply voltage (4 Ohm)     9V9 5/ 7 I N+]  3RPD[ 7+'   7+'    Figure 5. Distortion vs. output power (4 Ohm)     9V9      *$3*36 Figure 6. Distortion vs. frequency (4 Ohm) 7+'   *$3*36 7+'  9V 9 5/ 7 9V 9 5/ 7 3R :    I N+]   I N+]       3 R:  Figure 7. Supply voltage rejection vs. frequency 6 9 5 G%     *$3*36 ;7$/. G%  5/  7 3R  : 5J  7    I+] Figure 8. Crosstalk vs. frequency  2G 7 6RIPPLE6RMS   *$3*36              8/13   I+ ]     *$3*36 DocID14256 Rev 6   I+ ]    *$3*36 TDA7388 Electrical specifications Figure 9. Output noise vs. source resistance Figure 10. Total power disipation & efficiency (4 Ohm, sine) %N—6       6S 6 2,X 7 FK(Z  9V 9 5/ 7   N+] OLQ  H 0DISS7   H         $ZJWG 3GLVV                         *$3*36 Figure 11. Power dissipation vs. average output power (4 Ohm, audio program simulation)     0O7      *$3*36 Figure 12. ITU R-ARM frequency response, weighting filter for transient pop 3GLVV:   9V 9 5/ [7 *$866,$112,6(  /UTPUTATTENUATIOND"    &/,367$57                3R DYJ :    *$3*36 DocID14256 Rev 6     (Z '!0'03 9/13 Application hints 3 TDA7388 Application hints Ref. to the circuit of Figure 2. 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 10 µF. 3.2 Input stage The TDA7388’s inputs are ground-compatible and can stand very high input signals (±8 Vpk) without any performances degradation. If the standard value for the input capacitors (0.1 µF) is adopted, the low frequency cut-off amounts to 16 Hz. 3.3 Standby and muting If standby and muting are not used, a straight connection to VS of their respective pins would be admissible. Conventional/low-power transistors can be employed to drive muting and standby 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 70 k, which is sufficiently high to permit a muting capacitor reasonably small (about 1 µF). If R2 is higher than recommended, the involved risk is that the voltage at pin 22 may rises to above the 1.5 V threshold voltage and the device consequently fails 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 2.5 V/ms. 10/13 DocID14256 Rev 6 TDA7388 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Figure 13. Flexiwatt25 mechanical data and package dimensions $)- ! " # $ % & ' ' ( ( ( ( , , , , , , - . / 2 2 2 2 2 6 6 6 6 -).              MM 490                           -!8   -).                          INCH 490                           -!8   /54,).%!.$ -%#(!.)#!,$!4!             &LEXIWATTVERTICAL ƒ7\S ƒ7\S ƒ7\S ƒ7\S  DAM BARPROTUSIONNOTINCLUDED  MOLDINGPROTUSIONINCLUDED 6 # " 6 ( ( 6 ! ( / ( 2 , 2 6 2 , . 2 , 4 Package information , , 6 6 2 $ 2 , 0IN 2 2 % ' ' & &,%8-% - -  '!0'03 DocID14256 Rev 6 11/13 Revision history 5 TDA7388 Revision history Table 5. Document revision history 12/13 Date Revision Changes 06-Dec-2007 1 Initial release. 12-Jul-2010 2 Document status promoted from preliminary data to datasheet. 26-Apr-2012 3 Modified Features on page 1. Updated Table 4: Electrical characteristics on page 7. 20-Jun-2012 4 Updated Section 3.3: Standby and muting. 11-Mar-2013 5 Added Section 2.4: Electrical characteristic curves. 17-Sep-2013 6 Updated Disclaimer. DocID14256 Rev 6 TDA7388 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. 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