TDA7376PD 2 X 35W POWER AMPLIFIER FOR CAR RADIO HIGH OUTPUT POWER CAPABILITY 2 x 40W max./4Ω 2 x 35W/4Ω EIAJ 2 x 25W/4Ω @14.4V, 1KHz, 10% 2 x 25W/2Ω @14.4V, 1KHz, 10% ■ 2Ω DRIVING ■ DIFFERENTIAL INPUTS ■ MINIMUM EXTERNAL COMPONENTS COUNT ■ INTERNALLY FIXED GAIN (26dB) ■ MUTE FUNCTION (CMOS COMPATIBLE) ■ AUTOMUTE AT MINIMUM SUPPLY VOLTAGE DETECTION ■ STAND-BY FUNCTION ■ NO AUDIBLE POP DURING MUTE AND SYBY OPERATIONS ■ CLIPPING DETECTOR WITH PROGRAMMABLE DISTORTION THRESHOLD Protections: ■ ■ ■ SHORT CIRCUIT (OUT TO GROUND, OUT TO SUPPLY VOLTAGE, ACROSS THE LOAD) OVERRATING CHIP TEMPERATURE WITH PowerSO36 (Slug up) ORDERING NUMBER: TDA7376PD ■ ■ ■ ■ SOFT THERMAL LIMITER LOAD DUMP VOLTAGE FORTUITOUS OPEN GROUND LOUDSPEAKER DC CURRENT ESD DESCRIPTION The TDA7376PD is a new technology dual bridge Audio Amplifier in PowerSO36 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output stage configuration the TDA7376PD delivers a rail-to-rail voltage swing with no need of bootstrap capacitors. BLOCK DIAGRAM April 2004 1/9 TDA7376PD DESCRIPTION (Continued) Differential input pairs, that will accept either single ended or differential input signals, guarantee high noise immunity making the device suitable for both car radio and car boosters applications. The audio mute control, that attenuates the output signal of the audio amplifiers, suppresses pop on - off transients and cuts any noises coming from previous stages. The St-By control, that de-biases the amplifiers, reduces the cost of the power switch. The on-board programmable distortion detector allows compression facility whenever the ampifier is overdriven, so limiting the distortion at any levels inside the presettable range. PIN CONNECTION (Top view) NC 36 1 TAB PWGND 35 2 PWGND PWGND 34 3 PWGND NC 33 4 NC OUT2+ 32 5 OUT1+ OUT2+ 31 6 OUT1+ NC 30 7 NC OUT2- 29 8 OUT1- OUT2- 28 9 OUT1- VCC 27 10 VCC VCC 26 11 VCC IN2+ 25 12 IN1+ IN2- 24 13 IN1- NC 23 14 NC NC 22 15 NC CD-OUT 21 16 MUTE THDSET 20 17 ST-BY NC 19 18 SGND D02AU1348 ABSOLUTE MAXIMUM RATINGS Symbol Value Unit VOP Operating Supply Voltage 18 V Vs DC Supply Voltage 28 V Peak Supply Voltage (t = 50ms) 50 V Output Peak Current (not repetitive t = 100µs) 8 A Vpeak IO Ptot Tstg, Tj Parameter Output Peak Current (repetitive f > 10Hz) 6 A Power Dissipation Tcase = 85°C 36 W -40 to 150 °C Value Unit 2 °C/W Storage and Junction Temperature THERMAL DATA Symbol Rth j-case 2/9 Parameter Thermal Resistance Junction to case Max TDA7376PD Figure 1. Differential Inputs Test and Application Circuit Figure 2. Single Ended Inputs Test and Application Circuit 3/9 TDA7376PD Figure 3. Application Board Reference Circuit 4/9 TDA7376PD ELECTRICAL CHARACTERISTCS (Refer to the test circuits figgs 1 and 2, VS = 14.4V; RL = 4Ω; f = 1KHz; Tamb = 25°C, unless otherwise specified). Symbol Parameter VS Supply Voltage Range Id Total Quiescent Drain Current VOS Output Offset Voltage PO Output Power Test Condition Min. Typ. 8 RL = ∞ THD = 10%; THD = 10%; RL = 2Ω Max. Unit 18 V 200 mA 120 mV 23 33 25 37 W W 36 40 W 32 35 W 0.03 0.08 % % 80 70 dB dB PO max Max. Output Power (*) PO EIAJ EIAJ Outout Power (*) VS = 13.7V THD Distortion PO = 0.5 to 10W PO = 0.5 to 15W CT Cross Talk f = 1KHz; Rg f = 10KHz; Rg RIN Input Impedance differential input Single Ended input 45 40 GV Voltage Gain differential input 25 26 27 dB Single Ended input 25 26 27 dB 1 dB 6 µV µV ∆GV Channel Gain Balance EIN Input Noise Voltage SVR BW Rg = 600Ω; "A" weighted Rg = 600Ω; 22Hz to 33KHz 3 4 f = 100Hz; Vr = 1Vrms; Rg = 0; f = 10Hz; Vr = 1Vrms; Rg = 0; 45 Power Bandwidth (-3dB) 75 Supply Voltage Rejection Common Mode Rejection Ratio VCM = 1Vrms input referred 60 Stand-by Attenuation VSB = 1.5V; PO ref = 1W 80 VSB IN Stand-by In Threshold VSB OUT Stand-by Out Threshold Stand-by Current Consumption VSB = 0V AM Mute Attenuation VM = 1.5V; POref = 1W VM IN Mute in Threshold I6 Mute pin Current Distortion Detection Level (**) DDOUT Distortion Detector Output DC Current dB 90 dB 1.5 V 20 µA V 85 dB 1.5 Mute out Threshold DDL kHz 3.5 Isb VM OUT dB dB 55 ASB CMRR KΩ KΩ 3.5 V6 = 0 to VS, ; VS max. = 18V Output low, sinked current V V 100 µA 3.5 % 1 mA (Vpin10 = 1.5V) Output high, leakage current (Vpin10 = VS, @ VSmax = 18V) 10 µA (*) Saturated square wave output (**) see figure 5 for THD setting. The TDA7376PD is equipped with a programmable clipping distortion detector circuitry that allows to signal out the output stage saturation by providing a current sinking into an open collector output (DDout) when the total harmonic distortion of the output signal reaches the preset level. The desired threshold is fixed through an external divider that produces a proper voltage level across the THD set pin. Fig. 4 shows the THD detection threshold versus the THD set voltage. Since it is essential that the THD set voltage be proportional to the supply voltage, fig. 5 shows its value as a fraction of VCC. The actual voltage can be computed by multiplying the fraction corresponding to the desired THD threshold by the application’s supply voltage. 5/9 TDA7376PD Figure 4. Clip Detector Threshold vs. THD set. Voltage. Figure 7. Ouput Power vs. Supply Voltage 55 50 45 40 35 30 25 20 15 10 5 VS = 14.4V RL = 4 Ω f = 1KHz Figure 5. Quiescent Current vs. Supply Voltage Po (W) RL= 2 Ω f= 1 KHz THD= 10 % RL= 4 Ω 8 9 10 11 12 13 14 Vs (V) 15 16 Figure 8. EIAJ Power vs. Supply Voltage RL = 4 Ω f = 1KHz Vi = 2.5Vrms RL = 3.2 Ω RL = 4 Ω Figure 6. Ouput Power vs. Supply Voltage 45 40 35 Figure 9. THD vs. Frequency Po (W) VS = 14.4V RL = 4 Ω PO = 12W RL= 2 Ω f= 1 KHz THD= 1 % 30 25 20 RL= 4 Ω 15 10 5 6/9 8 9 10 11 12 13 14 Vs (V) 15 16 17 17 18 f (Hz) 18 TDA7376PD Figure 10. THD vs. Output Power (RL = 4Ω) 10 Figure 13. SVR vs. Frequency THD(%) Vs = 14.4 V RL = 4 Ω Ri = 0 Ω 1 Ri = 600 Ω f= 10 KHz VS = 14.4V RL = 4 Ω Vr = 1Vrms 0.1 f = 1 KHz 0.01 0.1 1 Po (W) 10 Figure 11. THD vs. Output Power (RL = 24Ω) 10 f (Hz) Figure 14. CMRR vs. Frequency THD (%) Vs= 14.4 V RL=2Ω 1 f = 10 KHz 0.1 VS = 14.4V RL = 4 Ω Vi = 1Vrms f= 1 KHz 0.01 0.1 1 Po (W) 10 Figure 12. Dissipated Power & Efficiency vs. Output Power f (Hz) Figure 15. Crosstalk vs. Frequency VS = 14.4V RL = 4 Ω f = 1KHz VS = 14.4V RL = 4 Ω PO = 1W RL = 0 f (Hz) 7/9 TDA7376PD DIM. A A2 A4 A5 a1 b c D D1 D2 E E1 E2 E3 E4 e e3 G H h L N s MIN. 3.25 3.1 0.8 mm TYP. MAX. 3.43 3.2 1 MIN. 0.128 0.122 0.031 -0.040 0.38 0.32 16 9.8 0.0011 0.008 0.009 0.622 0.37 14.5 11.1 2.9 6.2 3.2 0.547 0.429 0.2 0.030 0.22 0.23 15.8 9.4 5.8 2.9 0.8 OUTLINE AND MECHANICAL DATA -0.0015 0.015 0.012 0.630 0.38 0.039 0.57 0.437 0.114 0.244 1.259 0.228 0.114 0.65 11.05 0 15.5 MAX. 0.135 0.126 0.039 0.008 1 13.9 10.9 inch TYP. 0.026 0.435 0.075 0 15.9 0.61 1.1 1.1 0.031 10˚ (max) 8˚ (max) 0.003 0.625 0.043 0.043 (1) “D and E1” do not include mold flash or protusions. Mold flash or protusions shall not exceed 0.15mm (0.006”) (2) No intrusion allowed inwards the leads. PowerSO36 (SLUG UP) 7183931 C 8/9 TDA7376PD 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. 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