TDA7490SA 10W +10W Stereo Class-D Amplifier Features ■ FEATURES ■ 10W + 10W CONTINUOUS OUTPUT POWER: RL = 8Ω THD = 10% ■ HIGH EFFICIENCY ■ SINGLE SUPPLY AND SPLIT SUPPLY OPERATION ■ POP NOISE FREE ■ ST-BY AND MUTE FEATURES ■ SHORT CIRCUIT PROTECTION ■ THERMAL OVERLOAD PROTECTION ■ EXTERNALLY SYNCHRONIZABLE CLIPWATT 19 Description The tda7490SA is a dual audio class-D amplifier assembled in CLIPWATT 19 package specially designed for high efficiency application mainly for TV, LCD TV and Home Stereo sets. . Order codes Part number Temp range, °C Package Packing TDA7490SA 0 to 70 CLIPWATT 19 Tube November 2005 Rev 1 1/13 www.st.com 13 TDA7490SA Contents 1 Typical application and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 PCB and component layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2/13 TDA7490SA 1 Typical application and pin description 1 Typical application and pin description 1.1 typical application Figure 1. typical application and test circuit for single and split supply IN1 REFERENCE R1 27K 3 5 2 C5 1nF T2 EXTERNAL CLK BOOSTRAP1 PWM STAGE C3 330nF INPUT1 1 DRIVER C16 33nF OUT1 6 9 8 C18 560pF -VCC /GND C15 2200µF BOOTSTRAP2 C14 2200µF 17 +VCC2 IN2 C4 330nF C6 1nF GND STBY/MUTE C8 2.2µF 19 DRIVER C17 33nF C12 100nF OUT2 15 C19 560pF 10 -VCC/GND PWM STAGE 14 4 R6 10K STBY +VCC REGULATOR 12 R4 30K C20 220nF R7 100 -VCC/GND (**) LOUDSPEAKER1 1000µF 18 13 C7 330pF INPUT2 L1 30µ OSCILLATOR C2 330pF TRIANGLE2 R3 22K +VCC C13 100nF C1 100nF TRIANGLE1 R2 22K +VCC1 MUTE 16 7 +5V -5V C9 100nF VREG C10 100nF C11 100nF R9 1K L2 30µ C21 220nF R8 100 -VCC/GND (**) LOUDSPEAKER2 1000µF (*) R10 1K -VCC/GND R5 10K D99AU1066B -VCC/GND (*) Only for single Supply Solution (**) To add externally the PCB for Single Supply 1.2 pin description Figure 2. pin connection 19 OUT2 18 +VCC2 17 BOOT2 16 VREG 15 IN2 14 +5V 13 TRIANGLE2 12 GND 11 N.C. 10 -VCC 9 -VCC 8 TRIANGLE1 7 -5V 6 REFERENCE 5 IN1 4 ST-BY/MUTE 3 BOOT1 2 +VCC1 1 OUT1 D04AU1542 3/13 TDA7490SA Table 1. 1.3 N° Pin 1 OUT 1 Output CH1 2 +VCC1 Positive Power Supply CH1 3 BOOT1 Bootstrap CH1 4 ST-BY/MUTE State Pin 5 IN1 Input CH1 6 REFERENCE 7 -5V 8 TRIANGLE 1 9 -VCC Negative Power Supply (Signal Ground) 10 -Vcc Negative Power Supply (Power Ground) connected to tab 11 N.C. 12 GND 13 TRIANGLE 2 14 +5V +5V regulator 15 IN 2 Input CH2 16 VREG 10V Regulator 17 BOOT 2 Bootstrap CH2 18 +VCC2 Positive Power Supply CH2 19 OUT 2 Output CH2 Function Master Oscillator Setting Frequency -5V Regulator Triangular Waveform CH1 Ground Triangular Waveform CH2 thermal data Table 2. Symbol 4/13 pin description thermal data Parameter Rth j-case Thermal Resistance Junction-case Rth j-amb Thermal Resistance Junction-ambient Test Condition Typ. Max. Unit 2 3 °C/W 48 °C/W TDA7490SA 2 2 Electrical characteristcs Electrical characteristcs Table 3. electrical characteristcs (Refer to the test circuit, VCC = ±13.5V; RL = 8Ω; Demod. filter L = 33 µH, C = 220nF; f = 1KHz; R1 = 27kΩ; Tamb = 25°C unless otherwise specified.) Symbol Parameter VS Supply Range Iq Total Quiescent Current VOS Test Condition Min. Typ. ±7 RL = ∞; no LC filter Output Offset Voltage Max. Unit ±15 V 60 -150 THD = 10% THD = 1% mA +150 mV 10 8.2 W W 10 8 W W 4 3 W W VCC = ±10V; RL = 4Ω Po Output Power THD = 10% THD = 1% VCC = ±6V; RL = 4Ω THD = 10% THD = 1% Maximum Dissipated Power Po = 10+10W; THD = 10% Efficiency (1) Po = 10+10W; RL = 8Ω 86 % THD Total Harmonic Distortion RL = 8Ω; Po = 0.5W 0.1 % Imax Overcurrent Protection Threshold RL = 0 2.5 A PD h 3.5 2 W Tj Thermal Shut-down Junction Temperature 150 °C GV Closed Loop Gain 30 dB ∆GV Gain Matching eN Total Input Noise CT Cross Talk Ri Input Resistance -1 A Curve f = 20Hz to 22KHz f = 1KHz f = 100Hz; Vr = 0.5 1 dB 7 µV 12 µV t.b.d. dB 30 kΩ 60 dB SVR Supply Voltage Rejection Vrmax Overvoltage Protection Threshold Tr, Tf Rising and Falling Time 50 ns Power Transistor on Resistance 0.3 W RDSON FSW Switching Frequency 30 Internal Oscillator 180 V 200 220 KHz 5/13 TDA7490SA 2 Electrical characteristcs electrical characteristcs (Refer to the test circuit, VCC = ±13.5V; RL = 8Ω; Demod. filter L = 33 µH, C = 220nF; f = 1KHz; R1 = 27kΩ; Tamb = 25°C unless otherwise specified.) Table 3. Symbol Parameter Output Switching Frequency Range FSWR Test Condition Min. with Internal Oscillator (2) with external Oscillator (3) Typ. Max. Unit 140 250 KHz 100 250 KHz 0 0.7 V MUTE & STAND-BY FUNCTIONS VST-BY Stand-by range VMUTE Mute Range 1.7 2.5 V VPLAY Play Range 4 5 V AMUTE Mute Attenuation 60 IqST-BY Quiescent Current @ Stand-by 1.5 dB 2 mA Note: 1 : PO = measured across the load using the following inductor: SUMIDA RCH-108-330K ------------- + 23 with R1 in KΩ; Fsw in KHz R1 2 : Fsw = 4810 R1 3 : Fsw = F sw = ⎛⎝ ---⎞⎠ ⋅ F est with Fext, the frequency of the external oscillator 4 1 Figure 3. distortion vs output power Figure 4. THD(%) output Power vs Supply Voltage (single) Po(W) 10 14 5 12 Vs =27V 2 Rl =8 ohm 1 Rl = 8 ohm f = 1KHz 10 F=1KHz 0.5 8 0.2 6 THD=10% 0.1 4 0.05 THD=1% 2 0.02 0.01 100m 200m 500m 1 Pout(W) 6/13 2 5 10 20 0 +14 +16 +18 +20 +22 Vs (V) +24 +26 +28 +30 TDA7490SA Figure 5. 2 Electrical characteristcs output power vs supply voltage (single) Figure 6. Po(W) 14 dissipated power vs output power Pd(W) 3.5 12 3 Rl = 6 ohm f = 1KHz 10 2.5 8 Vs =+/- 13.5V THD=10% 2 6 Rload = 8ohm (both ch) f = 1KHz THD=1% 4 1.5 2 0 +14 1 +16 +18 +20 +22 +24 0 +26 2 4 6 Figure 7. 8 10 12 2 x Po(W) Vs (V) output power vs supply voltage (single) Figure 8. Po(W) quiescent current vs supply voltage Iq(mA) 12 70 Rl = 4 ohm 10 65 THD=10% f = 1KHz 8 Rl = No load No LC filter 60 6 55 THD=1% 4 50 2 45 0 +14 40 +15 +16 +17 +18 +19 +20 +21 +22 Vs (V) Figure 9. 7 8 9 10 11 Vs=(+/-V) 12 13 14 15 distortion vs output power THD(%) 10 Vs = +/- 13.5V 1 Rl = 8 ohm F = 1KHz 0.1 0.01 100m 200m 500m 1 2 5 10 Pout(W) 7/13 TDA7490SA 2 Electrical characteristcs Figure 10. turn on/off suggested sequence +VS (V) 13.5 t -VS -13.5 VIN (mV) Vpin4 (V) 4 1.7 0.7 Iq (mA) VOUT (V) STDBY MUTE 8/13 STDBY PLAY D03AU1566 MUTE TDA7490SA 3 PCB 3.1 PCB and component layout 3 PCB Figure 11. PCB component layout of the test circuit Figure 12. PCB copper bottom (top view) 9/13 TDA7490SA 3 PCB Figure 13. PCB copper top (top view) 10/13 TDA7490SA 4 4 Package information Package information In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. 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. clipwatt19 mechanical data & package dimensions mm inch DIM. MIN. TYP. MAX. MIN. TYP. MAX. A 3.2 0.126 B 1.05 0.041 C 0.15 D 1.50 E 0.49 F 0.47 0.50 F1 0.006 0.061 0.55 0.019 0.58 0.018 0.022 0.020 0.1 0.004 G 0.87 1.00 1.13 0.034 0.039 0.044 G1 17.87 18.0 18.13 0.703 0.708 0.713 H1 12.0 H2 18.6 H3 0.480 0.732 19.85 0.781 L 17.9 L1 14.55 L2 10.7 OUTLINE AND MECHANICAL DATA 11.0 0.704 0.572 11.2 0.421 0.433 L3 5.50 0.217 M 2.54 0.100 M1 2.54 0.100 0.441 Clipwatt19 7390917 A 11/13 TDA7490SA 5 Revision history 5 12/13 Revision history Date Revision 24-Nov-2005 1 Changes Initial release. TDA7490SA 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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