TDA7490L

TDA7490L 20W + 20W STEREO CLASS-D AMPLIFIER 40W MONO IN BTL 1 FEATURES Figure 1. Package ■ 20W + 20W OUTPUT POWER: @RL = 8Ω/4Ω; THD = 10% ■ HIGH EFFICIENCY WIDE SUPPLY VOLTAGE RANGE (FROM ±10 TO ±25V) SPLIT SUPPLY, SINGLE SUPPLY OPERATION TURN OFF/ON POP FREE ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION ACROSS THE LOAD THERMAL OVERLOAD PROTECTION EXTERNALLY SINCHRONIZABLE BRIDGE CONFIGURATION ■ ■ ■ ■ ■ ■ ■ ■ Flexiwatt 25 Table 1. Order Codes 2 Part Number Package TDA7490L Flexiwatt 25 c u d DESCRIPTION ) s t( o r P The TDA7490L is a dual audio class D amplifier assembled in Flexiwatt 25 package; it is specially designed for high efficiency application mainly for TV and Home Stereo sets. e t le o s b O - Figure 2. Test and Application Circuit. (Stereo Configuration) R1 10K R17 52.3K MUTE STBY R2 30K R3 10K R21 4.7K 6 INPUT1 10 o r P e C2 1nF C26 470pF C25 470pF (t s) c u d 7 9 C23 2200µF 14 +VCC C22 100nF 2 C21 2200µF t e l o C4 100nF R1 10K bs O R15 100 5 INTEGRATOR1 3 12 C3 100nF C19 560pF L1 30µ C18 330pF OUT1 C10 220nF R14 22K 8 OSC 16 EXT_CK C17 24pF 1 C7 100nF -VCC C20 33nF 11 13 -VCC -VCC 4 PWM-stage1 G=2.5 PREAMPLIFIER1 -VCC R4 130K R20 68K C27 2.2µF C1 330nF +VCC 15 R13 10K C16 330pF 25 R 6.8 C5 330nF INPUT2 C6 1nF PREAMPLIFIER2 18 PWM-stage2 G=2.5 19 R5 4.7K 23 INTEGRATOR2 17 21 20 24 22 L2 30µ R12 22K C15 560pF C14 33nF OUT2 C29 220nF R11 100 C8 470pF -VCC R6 68K C9 470pF C28 2200µF -VCC C11 100nF C12 2200µF +VCC D98AU978A R9 52.3K December 2005 Rev. 2 1/11 TDA7490L Figure 3. Test and Application Circuit. (Bridge Configuration) 470pF C40 C41 R4 68K 7 INPUT R5 52.3K 470pF The LC filter is optimized for 8Ω (LC filter for 4Ω in single-ended) It hos to be changed for other loads 9 - 10 L9 30µ Int. PWM-stage + PRE 3 C23 235nF C26 470nF dumping (common mode) R27 10 R63 4.7K C24 235nF + PRE 18 Int. PWM-stage 23 C29 470nF L10 30µ - 19 R25 Rload R28 10 17 470pF c u d 470pF C60 R61 68K C59 R62 52.3K ) s t( o r P D99AU1081 e t le Table 2. Absolute Maximum Ratings Symbol Parameter VCC DC Supply Voltage (no signal) Ptot Power Dissipation Tcase = 70°C Tstg, Tj (s) o s b O - ct Storage and Junction Temperature u d o Operating Temperature Range Top V6,8,10,18 r P e Maximum Voltage on pins # 6,8,10,18 referred to GND t e l o Value Unit ±30 V 35 W –40 to 150 °C 0 to 70 °C ±5 V Value Unit 1 °C/W Table 3. Thermal Data Symbol s b O Rth j-case 2/11 Parameter Thermal Resistance Junction-case Typ. TDA7490L Figure 4. Application in Supply Voltage 52.3K 1 1 * R3 1 2 1 2 +VSP2 -VSP2 N.C. IN 2 FEED3 18 FEED4 2 BOOT2 2 2 2 R12 1 21 C15 560pF C14 22 24 20 22K 1 23 2 1 1 2 2 470pF 100uF 1 e t le C11 470pF C9 2 R5 4.7K +Vs 1 R6 68K R9 2 2 1 C8 2 1 2 c u d 30uH L2 C29 2 OUT 1 EXT_CK ) s t( 1 2 OUT 2 220nF o r P * R11 100 C6 1 1 1 1 15 2 10K 33nF 17 1nF 19 330nF C5 10V REG 2 1 IN 2 25 1 R13 330pF 1 OUT2 100nF C17 24pF 1 T2 -VS 220nF R14 22K 2 -5V REG 1 2 2 8 C16 16 1 OSC 1 2 C10 2 2 1 TDA7490L C4 100nF C18 330pF 2 1 1 SGND 2 1 1 3 11 2 T1 13 1 * L1 30uF 2 +5V REG 100nF C7 C12 C19 560pF 1 2 2 C20 5 2200uF R23 2 1 OUT1 12 C3 BOOT1 * R15 33nF 1 1 4 +VSP1 9 2 -VSP1 C2 1nF 100 CURREF 330nF 1K 130K FEED2 C1 FEED1 2 IN 1 7 6 MUTE 2 10 2 1 2 68K 14 1 uF * C21 2200uF 2 1 R20 2 1 1K R4 C27 U1 IN 1 R22 2 1 +Vs 1 2 4.7K 10k 2 1 1 2 R21 1 +Vs C22 470pF C25 1 2 1 2 30k Stby 1 1 Mute +VS R2 2 2 1 10K R17 2 100nF 2 2 2 1 C26 470pF 1 R1 New component o s b O 1 52.3K ) s ( ct u d o r P e t e l o s b O 3/11 TDA7490L Figure 5. Pin Connection Name 1 -VCC sign/sub 2 -VCCpow1 3 out 1 4 +VCCpow1 5 BOOT1 6 STBY-MUTE 7 FEED1 8 OSC 9 FEED2 10 IN1 11 T1 +5V 13 GND t e l o 14 15 16 s b O 17 Function Negative signal/substrate supply CURREF T2 -5V FEED3 PWM output of CH1 Bootstrap CH1 Control State Pin Feedback pin 1 CH1 ) s ( ct Feedback pin2 CH1 u d o Input CH1 Triangular waveform CH1 +5V regulator (only for internal purposes) Signal ground Setting current resistor Triangular waveform CH2 -5V regulator (only for internal purposes) Feedback pin1 CH2 19 FEED4 20 NC Not connected 21 BOOT2 Bootstrap CH2 22 +VCCpow2 OUT2 -VCCpow2 25 Vreg 4/11 Input CH2 Feedback pin2 CH2 Positive power supply CH2 PWM output of CH2 Negative power supply CH2 10V regulator -VCC Vreg c u d o r P Master Oscillator Setting Freequency Pin (or external sync.) IN2 24 o s b O - Positive power supply CH1 18 23 e t le Negative power supply CH1 r P e 12 +VCC D97AU816B Table 4. Pin Description Pin N° OUT2 N.C. BOOT2 IN2 FEED4 FEED3 T2 -5V GND CURREF T1 +5V IN1 OSC FEED2 FEED1 STBY-MUTE +VCC BOOT1 -VCC 25 OUT1 -VCC 1 ) s t( TDA7490L Table 5. Electrical Characteristics (Refer to the test circuit, VCC = ±19V; RL = 8Ω; Demod. filter L = 30µH, C = 220nF; f = 1KHz; fsw = 200kHz; Tamb = 25°C unless otherwise specified.) Symbol Parameter Test Condition VS Supply Range Iq Total Quiescent Current Po Po(BTL) RL = ∞ no LC filter PD mA mV Output Power in Bridge Configuration VS = ±20V; RL = 16Ω THD = 10% THD=1% 40 32 W W VS =±15.5V; RL = 8Ω THD = 10% THD=1% 40 32 W W RL = 4Ω Vcc=±13.5V THD = 10% THD=1% 18 14.5 VCC = ±19V; RL = 8Ω Pο = 20W + 20W; THD = 10% Po = 20W + 20W RL = 8Ω; Po = 1 W Imax Overcurrent Protection Threshold RL = 0 Tj Thermal Shut-down Junction Temperature Gv Closed Loop Gain Gain Matching eN Total Input Noise RG = 50Ω CT Cross talk Ri Input Resistance o s b O - e t le Pr 29 ) s ( ct u d o Supply Voltage Rejection Overvoltage Threshold (5) Tr, Tt uc od 86 f = 100Hz; Vr = 0.5 % % 5 A 150 °C 30 31 dB +1 dB 7 12 20 W 0.1 -1 f = 1 KHz, Po = 1W SVR ) s t( W W 5.6 A Curve f = 20Hz to 22KHz Vrmax µV µV 55 dB 30 kΩ 60 dB 55 60 V Rising and Falling Time 50 70 ns Power Transistor on Resistance 0.4 0.8 Ω 200 230 KHz 0 07 V r P e t e l o (4) 120 +150 W W Efficiency (') RDSON V 20 16 Total Harmonic Distortion (3) Unit ±25 THD = 10% THD= 1% Maximum Dissipated Power η Max. Output Power THD Fsw 70 -150 Output Power Po(1) Typ. ±10 Output Offset Voltage VOS ∆Gv Min. Switching Frequency Range 100 MUTE & STAND-BY FUNCTIONS s b O VST-BY Stand-by range VMUTE Mute Range 1.7 2.5 V VPLAY Play Range 4 5 V AMUTE Mute Attenuation 55 IqST-BY Quiescent Current @ Stand-by 60 3 dB 5 mA *: Po = measured across the load using the following inductor: COIL58120 MPPA 2 (magnectics) TURNS= 20∅ 1 mm (1) L = 15µH, C = 470nF (3) ∆Gv is intended with R2, R17, R5, R9 1% precision (4) Fsw = 0.25 · (1/(300ns + R13 · (C17 + 76pF) . 0.85) (5) VRMAX = (+Vcc) - (-Vcc) when VR ≥VRMAX the device goes in Stand-By mode 5/11 TDA7490L Figure 6. P.C. Board and Component Layout of the Figs. 2, 3 (for Stereo and Bridge Compatible Configuration) Component Side c u d e t le ) s ( ct u d o r P e t e l o s b O 6/11 o s b O - ) s t( o r P Solder Side TDA7490L Figure 10. Frequency Response Figure 7. Distortion vs. Output Power 10 AMP (dB) THD (%) 5 D99AU1103 2 2 Stereo 0 Vcc=+/-19V 1 Rl = 8 ohm -2 f = 1KHz 0.5 Filter AES VS= ±17V; Rl= 8Ω; 0dB= 1W -4 0.2 -6 0.1 -8 0.05 -10 0.02 -12 0.01 200m 500m 1 2 5 10 20 -14 0.01 30 0.1 1 10 f(KHz) Pout (W) THD(%) 10 Stereo Vs=± 19V 7 Vs=+/-13.5V, Rl=4Ohm 2 Rl = 8 ohm f = 1KHz 6 f = 1KHz e t le 1 5 0.5 4 0.2 o r P o s b O 3 0.1 2 0.05 0.02 0.01 200m 500m 1 2 5 c u d Pout(W) o r P e (t s) 10 CT (dB) bs 0 0.5 2 4 6 8 10 12 14 16 18 20 2xPo(W) Figure 12. Distortion vs. Output Power in BTL THD (%) D99AU1102 t e l o -20 1 20 Figure 9. Crosstalk vs. Frequency -30 c u d Ptot(W) 8 5 ) s t( Figure 11. Power Dissipation vs. Output Power Figure 8. Distortion vs. Output Power 10 5 VS ± 17V; Rl=8Ω; 0dB=1W BTL Vcc=+/-15.5 V 2 1 -40 Rl = 8ohm f = 1KHZ Filter AES O 0.5 -50 0.2 -60 0.1 -70 0.05 -80 -90 -100 0.001 0.02 0.01 0.1 1 f(KHz) 0.01 200m 500m 1 2 5 10 20 50 Pout (W) 7/11 TDA7490L Figure 13. Distortion vs. Output Power in BTL THD (%) 10 5 25 Pout (W) BTL Stereo Vcc=+/-20V 2 Figure 14. Pout vs Supply Voltage 20 Rl = 8ohm Rl=16ohm THD=10% f = 1KHZ f = 1KHz 1 Filter AES 15 0.5 10 0.2 THD=1% 0.1 5 0.05 0.02 0 0.01 200m 500m 1 2 5 10 20 50 10 12 Pout (W) 14 16 Vs ( +/-V) 18 c u d e t le ) s ( ct u d o r P e t e l o s b O 8/11 o s b O - o r P 20 ) s t( TDA7490L Figure 15. Flexiwatt 25 Mechanical Data & Package Dimensions DIM. A B C D E F (1) G G1 H (2) H1 H2 H3 L (2) L1 L2 (2) L3 L4 L5 M M1 N O R R1 R2 R3 R4 V V1 V2 V3 MIN. 4.45 1.80 0.75 0.37 0.80 23.75 28.90 22.07 18.57 15.50 7.70 3.70 3.60 mm TYP. 4.50 1.90 1.40 0.90 0.39 1.00 24.00 29.23 17.00 12.80 0.80 22.47 18.97 15.70 7.85 5 3.5 4.00 4.00 2.20 2 1.70 0.5 0.3 1.25 0.50 MAX. 4.65 2.00 MIN. 0.175 0.070 1.05 0.42 0.57 1.20 24.25 29.30 0.029 0.014 0.031 0.935 1.139 22.87 19.37 15.90 7.95 0.869 0.731 0.610 0.303 4.30 4.40 0.145 0.142 inch TYP. 0.177 0.074 0.055 0.035 0.015 0.040 0.945 1.150 0.669 0.503 0.031 0.884 0.747 0.618 0.309 0.197 0.138 0.157 0.157 0.086 0.079 0.067 0.02 0.12 0.049 0.019 MAX. 0.183 0.079 0.041 0.016 0.022 0.047 0.955 1.153 0.904 0.762 0.626 0.313 0.169 0.173 (1): dam-bar protusion not included (2): molding protusion included V (s) t c u d o r P e V3 e t le o s b O R3 R4 V1 R2 N L2 L4 A H2 R L3 O C V t e l o bs o r P H H1 H3 O c u d ) s t( Flexiwatt25 (vertical) 5˚ (T p.) 3˚ (Typ.) 20˚ (Typ.) 45˚ (Typ.) B OUTLINE AND MECHANICAL DATA L L1 V1 V2 R2 D R1 L5 Pin 1 R1 R1 E G G1 F FLEX25ME M M1 7034862 9/11 TDA7490L Table 6. Revision History Date Revision Description of Changes March 2001 1 First Issue December 2005 2 Corrected the value of the inductance in the caption of the Table 5 “Electrical Characteristics”. c u d e t le ) s ( ct u d o r P e t e l o s b O 10/11 o s b O - o r P ) s t( TDA7490L c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o 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. 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