R K R4 130K C23. PWM-stage1 OSC. PWM-stage2. C9 470pF C28 R9 52.3K

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1 TDA STRO CLASS-D AMPLIFIR 0 MONO IN BTL PRODUCT PRVI + OUTPUT POR: RL = 8Ω/4Ω; THD = 0% HIGH FFICINCY ID SUPPLY VOLTAG RANG (FROM ±0 TO ±V) SPLIT SUPPLY TURN OFF/ON POP FR ST-BY AND MUT FATURS SHORT CIRCUIT PROTCTION ACROSS TH LOAD THRMAL OVRLOAD PROTCTION XTRNALLY SINCHRONIZABL BRIDG CONFIGURATION Flexiwatt ORDRING NUMBR: TDA7490 DSCRIPTION The TDA7490 is a dual audio class D amplifier assembled in Flexiwatt package; it is specially designed for high efficiency application mainly for TV and Home Stereo sets. Figure. Test and application circuit. (Stereo Configuration) R 0K R7.3K MUT STBY R 30K R 4.7K C6 470pF C 470pF +V CC +V CC R3 0K C3 00nF INPUT C 330nF C nf C7.µF 6 0 G=. PRAMPLIFIR 3 R0 68K INTGRATOR R4 30K PM-stage C3 00µF C 00nF C 00µF 3 C0 33nF C8 330pF R4 K R 00 C9 60pF L 30µ OUT C0 0nF C4 00nF R 0K C7 00nF 6 OSC 8 C7 4pF C6 330pF R3 0K XT_CK INPUT R 6.8 C 330nF C6 nf PRAMPLIFIR INTGRATOR G=. 8 R 4.7K C8 470pF PM-stage R K C4 33nF C 60pF R 00 L 30µ OUT C9 0nF R6 68K C9 470pF C8 00µF C 00nF C 00µF +V CC R9.3K D98AU978A December 999 /9 This is preliminary information on a new product now in development. Details are subject to change without notice.

2 Figure. Test and application circuit. (Bridge Configuration) 470pF 470pF R.3K C40 R4 68K C4 The LC filter is optimized for 8Ω (<->LC filter for 4Ω in single-ended) It hos to be changed for other loads 7 9 INPUT R63 4.7K Int. PR + PR + Int. - PM-stage PM-stage 3 3 L9 30µ C3 3nF C4 3nF L0 30µ C6 470nF R7 0 R8 0 C9 470nF dumping (common mode) R Rload pF 470pF C60 R6 68K C9 R6.3K D99AU08 ABSOLUT MAXIMUM RATINGS Symbol Parameter Value Unit V CC DC Supply Voltage (no signal) ±30 V P tot Power Dissipation T case = 70 C 3 T stg, T j Storage and Junction Temperature 40 to 0 C T op Operating Temperature Range 0 to 70 C V 6,8,0,8 Maximum Voltage on pins # 6,8,0,8 referred to GND ± V THRMAL DATA Symbol Parameter Typ. Max. Unit R th j-case Thermal Resistance Junction-case C/ /9

3 PIN CONNCTION (Top view) -VCC -VCC OUT +VCC BOOT STBY-MUT FD OSC FD IN T +V GND CURRF T -V FD3 IN FD4 N.C. BOOT +VCC OUT -VCC Vreg D97AU86B PIN FUNCTIONS N. Name Function sign/sub pow out +V CCpow BOOT STBY-MUT FD OSC FD IN T +V GND CURRF T -V FD3 IN FD4 NC BOOT +V CCpow OUT pow V reg Negative signal/substrate supply Negative power supply CH PM output of CH Positive power supply CH Bootstrap CH Control State Pin Feedback pin CH Master Oscillator Setting Freequency Pin (or external sync.) Feedback pin CH Input CH Triangular waveform CH +V regulator (only for internal purposes) Signal ground Setting current resistor Triangular waveform CH -V regulator (only for internal purposes) Feedback pin CH Input CH Feedback pin CH Not connected Bootstrap CH Positive power supply CH PM output of CH Negative power supply CH 0V regulator 3/9

4 LCTRICAL CHARACTRISTICS (Refer to the test circuit, VCC = ±V; RL = 8Ω; Demod. filter L = 30mH, C = 0nF; f = KHz; fsw = 00kHz; Tamb = C unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit V S Supply Range ±0 ± V I q Total Quiescent Current R L = no LC filter 70 0 ma V OS Output Offset Voltage 0 +0 mv P O Output Power THD = 0% THD = % P O(BTL) P O () Output Power in Bridge Configuration Vs =±V; R L = 6Ω THD = 0% THD = % Vs =±7V; R L = 8Ω THD = 0% THD = % Output Power R L = 4Ω V CC = ±6V THD = 0% THD = % P D Maximum Dissipated Power V CC = ±V; R L = 8Ω P O = + ; THD = 0% η () fficiency (*) P O = + 89 % THD Total Harmonic Distortion R L = 8Ω; P O = 0. % I max Overcurrent Protection R L = 0 3. A Threshold T j Thermal Shut-down Junction 0 C Temperature G V Closed Loop Gain 30 db (3) G V Gain Matching - + db e N Total Input Noise R G = 0Ω A Curve f = 0Hz to KHz C T Cross talk f = KHz, P O = db R i Input Resistance 30 kω SVR Supply Voltage Rejection f = 00Hz; V r = db V rmax Overvoltage Threshold () 60 V T r, T f Rising and Falling Time 0 ns R DSON Power Transistor on Resistance 0.4 Ω F (4) S Switching Frequency Range KHz MUT & STAND-BY FUNCTIONS V ST-BY Stand-by range V V MUT Mute Range.7. V V PLAY Play Range 4 V A MUT Mute Attenuation 60 db I qst-by Quiescent Stand-by 3 ma *: P O = measured across the load using the following inductor: COIL80 MPPA (magnectics) TURNS = 0 ø mm () L = µh, C = 470nF () ηtop = 90% where VCC = ±V; RL = 8Ω; PO = ; THD = 0% (3) Gv is intended with R, R7, R, R9 % precision (4) FS = 0. (/(300ns + R3 ( C7 + 76pF) 0.8) () V RMAX = (+VCC) - () when VR VRMAX the device goes in Stand-By mode 7 µv µv 4/9

5 Figure 3. P.C. Board and component layout of the Figs.,. (for Stereo and Bridge compatible configuration) C O M P O N N T S I D S O L D R S I D /9

6 Figure 4. Distortion vs. Output Power Figure. Distortion vs. Output Power THD (%) Stereo V S ± V; Rl=8Ω; f=khz D99AU088 THD (%) Stereo V S ± 6V; Rl=4Ω; f=khz D99AU P O() Figure 6. Crosstalk vs. Frequency P O() Figure 7. Frequency Response CT (db) D99AU090 AMP (db) D99AU V S ± V; Rl=8Ω; 0dB= V S ± V; Rl=8Ω; 0dB= f(khz) f(khz) Figure 8. Power Dissipation vs. Output Power Power Dissipation () Vs= +/- V; Rl = 8 Ohm; f= KHz Output Power () Figure 9. Distortion vs Output Power in BTL THD (%) Bridge V S ± 7V; Rl=8Ω; f=khz D99AU P O() 6/9

7 Figure 0. Distortion vs Output Power in BTL THD (%) 0. Bridge V S ± V; Rl=6Ω; f=khz D99AU P O() 7/9

8 DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A B C D F () G G H () H H H L () L L () L L L M M N O R R R R R V (Typ.) V 3 (Typ.) V 0 (Typ.) V3 4 (Typ.) (): dam-bar protusion not included (): molding protusion included OUTLIN AND MCHANICAL DATA Flexiwatt V3 H3 H H H A O R3 L L3 L4 N R4 V R R L L V V R R D L R R V G G F M M B C V FLXM 8/9

9 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. Specification 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 999 STMicroelectronics Printed in Italy All Rights Reserved STMicroelectronics GROUP OF COMPANIS Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. 9/9

Obsolete Product(s) - Obsolete Product(s)

Obsolete Product(s) - Obsolete Product(s) FEATURES 0 + 0 OUTPUT POER: @R L = 8Ω/4Ω; THD = 0% HIGH EFFICIENCY IDE SUPPLY VOLTAGE RANGE (FROM ±0 TO ±V) SPLIT SUPPLY, SINGLE SUPPLY OPERATION TURN OFF/ON POP FREE ST-BY AND MUTE FEATURES SHORT CIRCUIT