TDA2004A MULTIWATT11 D95AU318 - Datasheet Archive

 

® 10 + 10W STEREO AMPLIFIER FOR CAR RADIO Its main features are : Low distortion. Low noise. High reliability of the chip and

 

TDA2004A TDA2004A ® 10 + 10W STEREO AMPLIFIER FOR CAR RADIO Its main features are : Low distortion. Low noise. High reliability of the chip and of the package with additional safety during operation thanks to protections against : OUTPUT AC SHORT CIRCUIT TO GROUND VERY INDUCTIVE LOADS OVERRATING CHIP TEMPERATURE LOAD DUMP VOLTAGE SURGE FORTUITOUS OPEN GROUND Space and cost saving : very low number of external components, very simple mounting system with no electrical isolation between the package and the heatsink. . . . . . DESCRIPTION The TDA2004A TDA2004A is a class B dual audio power amplifier in MULTIWATT® package specifically de- MULTIWATT11 MULTIWATT11 ORDERING NUMBER : TDA2004A TDA2004A signed for car radio applications ; stereo amplifiers are easily designed using this device that provides a high current capability (up to 3.5 A) and that can drive very low impedance loads (down to 1.6 ). PIN CONNECTION (top view) 11 BOOTSTRAP(1) 10 OUTPUT(1) 9 +VS 8 OUTPUT(2) 7 INPUT+(2) 4 INPUT-(2) 3 SVRR 2 INPUT-(1) 1 September 2003 GND 5 TAB CONNECTED TO PIN 6 BOOTSTRAP(2) 6 INPUT+(1) D95AU318 D95AU318 1/10 TDA2004A TDA2004A ABSOLUTE MAXIMUM RATINGS Value Unit VS Opearting Supply Voltage Parameter 18 V VS VS DC Supply Voltage Peak Supply Voltage (for 50ms) 28 40 V V Symbol IO (*) IO (*) Ptot Tj, Tstg Output Peak Current (non repetitive t = 0.1ms) 4.5 A Output Peak Current (repetitive f 10Hz) 3.5 A 30 ­40 to 150 W °C Power Dissipation at Tcase = 60°C Storage and Junction Temperature (*) The max. output current is internally limited. THERMAL DATA Parameter Symbol Rth j-case Value Thermal Resistance Junction-case Unit 3 Max. °C/W ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tamb = 25°C, GV = 50dB, Rth (heatsink) = 4°C/W, unless otherwise specified) Symbol VS Parameter Supply Voltage Test Condition Min. Typ. Max. Unit 18 V 7.2 6.6 7.8 7.2 V V 120 120 mA mA 8 6.6 6.0 VO Quiescent Output Voltage VS = 14.4V VS = 13.2V Id Total Quiescent Drain Current VS = 14.4V VS = 13.2V 65 62 ISB PO Stand-by Current Output Power (each channel) Pin 3 grounded f = 1KHz, d = 10% 5 mA 6 7 9 10 6.5 8 10(*) 11 W W W W 6 9 6.5 10 12 w w w VS = 14.4V RL = 4 RL = 3.2 RL = 2 RL= 1.6 VS = 13.2V RL = 3.2 RL= 1.6 VS = 16V; RL = 2 d CT Vi 2/10 Distortion (each channel) Cross Talk Input Saturation Voltage f = 1KHz VS = 14.4V; RL = 4 PO = 50mW to 4W VS = 14.4V; RL = 2 PO = 50mW to 6W VS = 13.2V; RL = 3.2 PO = 50mW to 3W VS = 13.2V; RL = 1.6 PO = 50mW to 6W VS = 14.4V VO = 4Vrms RL = 4 f = 1KHz f = 10KHz Rg = 5K 0.2 % 0.3 1 % 0.2 1 % 0.3 50 40 300 1 1 % 60 45 dB dB mV TDA2004A TDA2004A ELECTRICAL CHARACTERISTICS (continued Symbol Test Condition Parameter Input Resistance (non inverting input) f = 1KHz fL Low Frequency Roll off (-3dB) fH GV High Frequency Roll off (-3dB) RL = 1.6 to 4 Voltage gain (open loop) f = 1KHz Typ. 200 f = 1KHz Voltage gain (closed loop) Min. 70 Ri SVR Supply Voltage Rejection fripple = 100Hz; Rg = 10K C3 = 10µF Vripple = 0.5Vrms Efficiency VS = 14.4V RL = 4 RL = 2 VS = 13.2V RL = 3.2 RL = 1.6 Thermal Shutdown Junction Temperature f = 1KHz PO = 6.5W PO = 10W f = 1KHZ PO = 6.5W PO = 10W 50 0.5 1.5 Rg = 10K (*) 35 Hz Hz Hz Hz KHz 90 eN TJ 15 48 Unit K 35 50 40 55 RL = 4 RL = 2 RL = 3.2 RL= 1.6 closed loop gain matching Total Input noise Voltage h Max. dB 51 dB 5 dB µV 45 dB 70 60 % % 70 60 145 % % °C Notes : (*) 9.3W without Bootstrap (*) Bandwith Filter : 22Hz to 22KHz. Figure 1 : Test and Application Circuit. 3/10 TDA2004A TDA2004A Figure 2 : P.C. Board and Component layout of the fig. 1 (scale 1 : 1). Figure 3 : Quiescent Output Voltage vs. Supply Voltage. 4/10 Figure 4 : Quiescent Drain Current vs. Supply Voltage. TDA2004A TDA2004A Figure 5 : Distortion vs. Output Power. Figure 6 : Output Power vs. Supply Voltage. Figure 7 : Output Power vs. Supply Voltage. Figure 8 : Distortion vs. Frequency. Figure 9 : Distortion vs. Frequency. Figure 10 : Supply Voltage Rejection vs. C3. 5/10 TDA2004A TDA2004A Figure 11 : Supply Voltage Rejection vs. Frequency. Figure 12 : Supply Voltage Rejection vs. Values of Capacitors C2 and C3. Figure 13 : Supply Voltage Rejection vs. Values of Capacitors C2 and C3. Figure 14 : Gain vs. Input Sensitivity. Figure 15 : Maximum Allowable Power Dissipation vs. Ambient Temperature. Figure 16 : Total Power Dissipation and Efficiency vs. Output Power. 6/10 TDA2004A TDA2004A Figure 17 : Total Power Dissipation and Efficiency vs. Output Power . APPLICATION SUGGESTION The recommended values of the components are those shown on application circuit of fig.1. Different values can be used ; the following table can help the designer. Component Recomm. Value R1 120K R2, R4 R3, R5 1K 3.3 R6, R7 1 C1, C2 Purpose Larger Than Optimization of the Smaller PO max. output signal simmetry Smaller Than Smaller PO max. Close loop gain setting (*) Increase of gain Decrease of gain Decrease of gain Increase of gain Frequency stability Danger of oscillation at high frequency with inductive load 2.2µF Input DC decoupling High turn-on delay C3 10µF Ripple Rejection Increase of SVR. Degradation of SVR. Increase of the switchon time. C4, C6 100µF Boostrapping C5, C7 100µF Feedback Input DC decoupling. C8, C9 C10, C11 0.1µF 1000µF to 2200µF Frequency Stability Output DC decoupling. High turn-on pop Higher low frequency cutoff. Increase of noise Increase of distortion at low frequency Danger of oscillation. Higher low-frequency cut-off. (*) The closed­loop gain must be higher than 26dB. 7/10 TDA2004A TDA2004A BUILT­IN PROTECTION SYSTEMS LOAD DUMP VOLTAGE SURGE The TDA2004A TDA2004A has a circuit which enables it to withstand a voltage pulse train, on pin 9, of the type shown in Fig. 19. If the supply voltage peaks to more than 40 V, then an LC filter must be inserted between the supply and pin 9, in order to assure that the pulses at pin 9 will be held within the limits shown. A suggested LC network is shown in Fig. 18. With this network, a train of pulse with amplitude up to 120 V and with of 2 ms can be applied to point A. This type of protection is ON when the supply voltage (pulse or DC) exceeds 18 V. For this reason the maximum operating supply voltage is 18 V. POLARITY INVERSION High current (up to 10 A) can be handled by the device with no damage for a longer period than the blow-out time of a quick 2 A fuse (normally connected in series with the supply). This feature is added to avoid destruction, if during fitting to the car, a mistake on the connection of the supply is made. Figure 18. A protection diode is provided to allow use of the TDA2004A TDA2004A with inductive loads. OPEN GROUND When the ratio is the ON condition and the ground is accidentally opened, a standard audio amplifier will be damaged. On the TDA2004A TDA2004A protection diodes are included to avoid any damage. INDUCTIVE LOAD DC VOLTAGE The maximum operating DC voltage on the TDA2004A TDA2004A is 18 V. However the device can withstand a DC voltage up to 28 V with no damage. This could occur during winter if two batteries are series connected to crank the engine. Figure 19. SHORT CIRCUIT (AC conditions) The TDA2004A TDA2004A can withstand an accidental shortcircuit from the output to ground caused by a wrong connection during normal working. 8/10 THERMAL SHUT-DOWN The presence of a thermal limiting circuit offers the following advantages : 1) an overload on the output (even if it is permanent), or an excessive ambient temperature can be easily withstood. 2) the heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no device damage in the case of excessive junction temperature ; all that happens is the PO (and therefore Ptot) and Id are reduced. The maximum allowable power dissipation depends upon the size of the external heatsink (i.e. its thermal resistance) ; fig. 15 shown this dissipable power as a function of ambient temperature for different thermal resistance. TDA2004A TDA2004A mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 OUTLINE AND MECHANICAL DATA 0.063 D 1 E 0.49 0.039 0.55 0.019 0.022 F 0.88 0.95 0.035 G 1.45 1.7 1.95 0.057 0.067 0.077 0.037 G1 16.75 17 17.25 0.659 0.669 0.679 H1 19.6 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.87 0.886 L2 17.4 18.1 0.685 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 M 4.25 4.55 4.85 0.167 0.179 0.191 M1 4.73 5.08 5.43 0.186 0.200 0.214 S 1.9 2.6 0.075 0.102 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 0.713 0.114 Multiwatt11 V 9/10 TDA2004A TDA2004A 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 © 2003 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 www.st.com 10/10