TDA7388A

TDA7388A 4 x 42 W quad bridge car radio amplifier Datasheet - production data  Clipping detector  Offset detector  Diagnostic facility for: – Out to GND short – Out to VS short – Thermal shutdown '!0'03 Flexiwatt27 Features  High output power capability: – 4 x 42 W / 4  max. – 4 x 27 W / 4  @ 14.4 V, 1 kHz, 10 %  Low distortion Description The TDA7388A is a new technology class AB audio power amplifier in Flexiwatt27 package designed for high end car radio applications.  Low output noise  Standby function  Mute function  Automute at min. supply voltage detection  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 – Overrating chip temperature with soft thermal limiter – Load dump voltage – Fortuitous open GND – Output DC offset detector – Reversed battery – ESD Thanks to the fully complementary PNP/NPN output configuration the TDA7388A allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced components count allows very compact sets. The TDA7388A is also equipped with Clipping detector and Offset detector features. Table 1. Device summary Order code Package Packing TDA7388A Flexiwatt27 Tube September 2013 This is information on a product in full production. DocID14257 Rev 5 1/13 www.st.com 1 Contents TDA7388A 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 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 DocID14257 Rev 5 TDA7388A 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 DocID14257 Rev 5 3/13 List of figures TDA7388A 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. 4/13 Pin connections (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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power dissipation & efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . . 9 Flexiwatt27 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 DocID14257 Rev 5 TDA7388A Pin connection and test/application diagrams Figure 1. Pin connections (top view) #$ 0 '.$ -54% /54 6## /54 /54 /54 0 '.$ ). !# '.$ ). 3 '.$ ). ). 362 /54 0 '.$ 6## /54 34 "9 /54 /54 0 '.$ 4!" 4!"   /&&$%4 1 Pin connection and test/application diagrams '!0'03 Figure 2. Standard test and application circuit /&&3%4 $%4%#4/2 # M& 2 # M& 6 6CC   2 + 6CC     34 "9 + 2  # M&   -54% + # # M& ).       #M& ). /54   #M&   ). #M& /54  M& ). /54  3 '.$    # M& /54   # M& 362   #$ 4!" 2 6 + #$/54 DocID14257 Rev 5 '!0'03 5/13 Electrical specifications TDA7388A 2 Electrical specifications 2.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol Parameter 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 s) 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 Tamb Operative temperature range – 40 to 105 °C VS IO Ptot 2.2 Thermal data Table 3. Thermal data Symbol Rth j-case 2.3 Parameter Thermal resistance junction-to-case max. Value Unit 1 °C/W 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 Quiescent current RL = VOS Output offset voltage Play mode dVOS During mute ON/OFF output offset voltage ITU R-ARM weighted During St-By ON/OFF output see Figure 11 offset voltage Typ. Max. Unit 100 190 350 mA - - ±100 mV -10 - +10 mV -50 - +50 mV Gv Voltage gain - 25 26 27 dB Gv Channel gain unbalance - - - ±1 dB Output power THD = 10 %; VS = 14.4 V 25 27 - W Po 6/13 Min. DocID14257 Rev 5 TDA7388A Electrical specifications Table 4. Electrical characteristics (continued) Symbol Po max Parameter Max.output power (1) Test condition Min. Typ. Max. Unit 39 42 - W Po = 4 W - 0.04 0.10 % "A" Weighted - 50 70 µV Bw = 20 Hz to 20 kHz - 70 100 µV VS = 14.4 V 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 = 0 V - - 20 µA Ipin4 Standby pin current VSt-By = 1.2 to 2.6 V - - ±10 µA VSB out Standby out threshold voltage (Amp: on) 2.6 - - V VSB IN Standby in threshold voltage (Amp: off) - - 1.2 V AM Mute attenuation POref = 4 W 80 90 dB VM out Mute out threshold voltage (Amp: Play) 2.6 - - V VM in Mute in threshold voltage (Amp: Mute) - - 1.2 V VAM in VS automute threshold (Amp: Mute); Att  80 dB; POref = 4 W (Amp: Play); Att < 0.1 dB; PO = 0.5 W - 7.6 6.5 8.5 V V Ipin22 Muting pin current VMUTE = 1.2 V (Source current) 5 11 20 µA ±1.4 ±2 ±2.6 V Offset detector Voff Detected diff. output offset VSt-by =5V VOFF LK VOFF high leakage current OD off - - 10 µA VOFF SAT VOFF det saturation voltage OD on; IOD = 1 mA - 300 - mV Clipping detector CDLK Clip det high leakage current CD Off - - 10 µA CDSAT Clip det sat voltage DC On; ICD = 1 mA - 300 - mV CDTHD Clip det THD level - - 0.2 - % 1. Saturated square wave output. DocID14257 Rev 5 7/13 Electrical specifications 2.4 TDA7388A Electrical characteristic curves Figure 3. Quiescent current vs. supply voltage Figure 4. Output power vs. supply voltage (4 Ohm) )DM!  0O7    6IN 2,7 2,7 F+(Z  4($       4($           6S6         6S6 Figure 5. Distortion vs. output power   '!0'03    '!0'03 Figure 6. Distortion vs. frequency  4($ 4($ 6S6 2,7 0O7 6S6 2,7   FK(Z   FK(Z      0O7      F(Z '!0'03 8/13  DocID14257 Rev 5 '!0'03 TDA7388A Electrical specifications Figure 7. Supply voltage rejection vs. frequency 362D"  Figure 8. Crosstalk vs. frequency      84!,+D"      2G7 6RIPPLE6RMS  2,7 0O7 2G7          F(Z     Figure 9. Output noise vs. source resistance %N—6   0DISS7 H H 6S6 2,X7 FK(Z     '!0'03 Figure 10. Power dissipation & efficiency vs. output power  6S6 2,7   F(Z '!0'03         +(ZLIN   3GLVV    !WGTD       2G7          '!0'03      0O7        '!0'03 Figure 11. ITU R-ARM frequency response, weighting filter for transient pop  /UTPUTATTENUATIOND"            (Z '!0'03 DocID14257 Rev 5 9/13 Application hints 3 TDA7388A 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 TDA7388A’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 will amount to 16 Hz. 3.3 Standby and muting Standby 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 10 µA normally flows out of pin 23, 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 will be that the voltage at pin 23 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 2.5 V/ms. 10/13 DocID14257 Rev 5 TDA7388A 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 12. Flexiwatt27 mechanical data and package dimensions ',0 0,1   $ % & ' ( ) * * + + + + /  / / / / / 0 0 1 2 5 5 5 5 5 9 9 9 9            PP 7