TDA7297D

TDA7297D 10W+10W DUAL BRIDGE AMPLIFIER 1 FEATURES Figure 1. Package ■ TECHNOLOGY BI20II WIDE SUPPLY VOLTAGE RANGE (6.5 - 18V) OUTPUT POWER 10+10W @ THD = 10%, RL = 8Ω, VCC = 13V MINIMUM EXTERNAL COMPONENTS – NO SVR CAPACITOR – NO BOOTSTRAP – NO BOUCHEROT CELLS – INTERNALLY FIXED GAIN STAND-BY & MUTE FUNCTIONS SHORT CIRCUIT PROTECTION ■ THERMAL OVERLOAD PROTECTIONE ■ ■ ■ ■ ■ VCC +5V R1 47K R2 47K o r P e IN1 du ST-BY t e l o bs O ) s ( ct C3 0.22µF S-GND 2 Part Number Package TDA7297D PowerSO20 (SLUG UP) DESCRIPTION e t le o s b O 6 7 + c u d ) s t( o r P C1 470µF 15 2 OUT1+ 5 OUT1- 19 OUT2+ 16 OUT2- C2 100nF C7 100nF - 13 R3 10K 9 C4 10µF Vref C5 0.22µF IN2 MUTE Table 1. Order Codes The TDA7297D is a dual bridge amplifier specially designed for Home Audio, Plasma TV, LCD TV applications. Figure 2. TEST AND APPLICATION CIRCUIT JP1 PowerSO20 (SLUG UP) 14 R4 10K 8 + + - C6 1µF 1 10 11 PW-GND 20 + D02AU1407 May 2004 REV. 1 1/11 TDA7297D Table 2. Absolute Maximum Ratings Symbol Parameter Value Unit Vs Supply Voltage 20 V IO Output Peak Current (internally limited) 2 A Ptot Total Power Dissipation (Tamb = 70°C 33 W Top Operating Temperature 0 to 70 °C -40 to 150 °C Value Unit 2.1 °C/W Tstg, Tj Storage and Junction Temperature Table 3. Thermal Data Symbol Rth j-case Parameter Thermal Resistance Junction-case Figure 3. PIN CONNECTION c u d PW GND 20 OUT2+ 19 N.C. 18 N.C. 17 OUT2- 16 1 PW GND 2 OUT1+ 3 N.C. 4 N.C. 5 OUT1- 15 6 VCC 14 7 IN1 13 8 MUTE N.C. 12 9 ST BY PW GND 11 10 IN2- o r P e SGND s b O 2/11 (s) so b O - ct VCC t e l o e t le o r P du D02AU1408 PW GND ) s t( TDA7297D Table 4. Electrical Characteristcs (VCC = 13V, RL = 8Ω, f = 1KHz, Tamb = 25°C unless otherwise specified) Symbol VCC Iq Parameter Test Condition Supply Range Total Quiescent Current Typ. 6.5 RL = ∞ 50 VOS Output Offset Voltage PO Output Power THD 10% Total Harmonic Distortion PO = 1W THD Min. 8.3 CT AMUTE Supply Voltage Rejection mA 120 mV 0.3 % 1 % dB Crosstalk 46 60 Mute Attenuation 60 80 ) s t( GV Closed Loop Voltage Gain 150 31 r P e t le Voltage Gain Matching Ri Input Resistance VTMUTE Mute Threshold VTST-BY St-by Threshold eN 65 56 Thermal Threshold IST-BY V 40 Tw ∆GV 18 W 0.1 f = 100Hz, VR =0.5V Unit 10 PO = 0.1W to 5W f = 100Hz to 15KHz SVR Max. St-by Current Total Output Noise Voltage so Vo = -30dB (s) b O - A Curve f = 20Hz to 20KHz t c 3 APPLICATIVE SUGGESTIONS u d o r P e t e l o s b O dB dB od uc 32 °C 33 dB 0.5 dB 25 30 2.3 2.9 4.1 V 0.8 1.3 1.8 V 100 µA 500 µV µV 150 220 KΩ STAND-BY AND MUTE FUNCTIONS 3.1 Microprocessor Application In order to avoid annoying "Pop-Noise" during Turn-On/Off transients, it is necessary to guarantee the right Stby and mute signals sequence.It is quite simple to obtain this function using a microprocessor (Fig. 4 and 5). At first St-by signal (from µP) goes high and the voltage across the St-by terminal (Pin 9) starts to increase exponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to avoid "POP" and "CLICK" on the outputs. When this voltage reaches the St-by threshold level, the amplifier is switched-on and the external capacitors in series to the input terminals (C1, C3) start to charge. It's necessary to mantain the mute signal low until the capacitors are fully charged, this to avoid that the device goes in play mode causing a loud "Pop Noise" on the speakers. A delay of 100-200ms between St-by and mute signals is suitable for a proper operation. 3/11 TDA7297D Figure 4. Microprocessor Application VCC C1 0.22µF IN1 6 7 2 C5 470µF OUT1+ + 5 OUT1- 19 OUT2+ 15 C6 100nF - ST-BY R1 10K 9 C2 10µF S-GND µP 13 Vref C3 0.22µF IN2 MUTE R2 10K 14 + + - 8 C4 1µF c u d 1 10 PW-GND 11 - 20 + 16 OUT2- o r P D02AU1409 e t le Figure 5. Microprocessor Driving Signals +VS(V) +13V ) s ( ct VIN (mV) VST-BY pin 9 1.8 o s b O - u d o 1.3 r P e 0.8 VMUTE pin 8 t e l o s b O 4.1 2.9 2.3 Iq (mA) VOUT (V) OFF ST-BY 4/11 PLAY MUTE MUTE ST-BY OFF D02AU1411-Mod ) s t( TDA7297D Figure 6. THD+N vs Output Power Figure 9. Frequency Response THD(%) L evel(d B r) 10 5 .00 0 0 5 4 .00 0 0 Vcc=13V 2 3 .00 0 0 Rl= 8ohm 1 V c c = 1 6 .5 V R l = 8 ohm Pou t = 1W 2 .00 0 0 F=1KHz 0.5 1 .00 0 0 f=5KHz 0 .0 0.2 -1 .00 0 0.1 -2 .00 0 0.05 f=1KHz -3 .00 0 0.02 -4 .00 0 0.01 100m 200m 500m 1 2 5 10 20 -5 .00 0 10 100 1k Figure 7. THD+N vs Output Power 10 16 5 14 2 Vcc=11V 12 1 Rl= 8ohm 10 F=1KHz 0.5 f=5KHz so 0.05 f=1KHz 0.02 500m 1 2x Pout (W) (s) 2 5 t c u od r P e 5 t e l o 2 Vcc=13V Rl= 8ohm s b O 2 d=10% d=1% 0 6 7 8 9 10 11 12 13 14 15 16 10 11 Vs (V) Figure 11. Power Dissipation vs Pout Po = 5W Pdiss(W) THD(%) 10 b O - o r P 10 Figure 8. THD+N vs Frequency 0.5 e t le F=1KHz 4 200m ) s t( Rl =8ohm 6 0.1 1 c u d 8 0.2 0.01 100m 100k Figure 10. Output Power vs supply Voltage Po(W) THD(%) 10k freq uency (H z) 2 x Pout (W) 0.2 0.1 0.05 0.02 11 10 9 8 7 6 5 4 3 2 1 0 Vcc=13V Rl = 8 ohm F=1KHz 0 0.01 1 2 3 4 5 6 7 8 9 2xPout(W) 20 50 100 200 500 1k 2k 5k 10k Frequency (Hz) 5/11 TDA7297D Figure 12. Mute Attenuation vs. Vpin 8t Figure 14. Quiescent Curent vs. Supply Voltage Attenuation (dB) Iq (mA) 10 70 0 -10 65 -20 60 -30 55 -40 50 -50 -60 45 -70 40 -80 35 -90 30 -100 1 1.5 2 2.5 3 3.5 4 4.5 5 6 7 8 9 10 11 12 13 14 15 16 Figure 13. Standard-By Attenuation vs Vpin. 9 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 c u d Attenuation (dB) e t le 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 u d o r P e t e l o s b O 6/11 2 2.2 o s b O - 2.4 ) s ( ct Vpin.7 (V) 17 18 Vsupply(V) Vpin.6(V) o r P ) s t( TDA7297D Figure 15. PC Board Component Layout c u d Sign GND o r P o s b O - Figure 16. Evaluation Board Top Layer Layout ) s ( ct e t le ) s t( u d o r P e t e l o s b O 7/11 TDA7297D Figure 17. Evaluation Board Bottom Layer Layout 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 ) s t( TDA7297D Figure 18. PowerSO20 (SLUG UP) Mechanical Data & Package Dimensions DIM. A A2 A4 A5 a1 b c D (1) D1 D2 E E1 (1) E2 E3 e e3 G H h L N R S V mm TYP. MIN. 3.25 3 0.8 0.15 0.030 0.4 0.23 15.8 9.4 3.15 0.2 MAX. 3.5 3.3 1 0.25 -0.040 0.53 0.32 16 9.8 MIN. 0.128 0.118 0.031 0.006 0.0012 0.016 0.009 0.622 0.370 14.5 11.1 2.9 6.2 1.42 0.547 0.429 inch TYP. MAX. 0.138 0.124 0.130 0.039 0.008 0.010 -0.0016 0.021 0.012 0.630 0.385 0.039 0.570 0.437 0.114 0.244 0.050 0.056 0.450 0.004 0.625 0.043 0.043 1 13.9 10.9 5.8 1.12 1.27 11.43 0 15.5 0.228 0.044 0.1 0 15.9 0.61 1.1 1.1 0.031 10¡ (max) 0.8 0.6 c u d 0.024 0¡ (min.) 8¡ (max.) 5¡ (min.) 7¡ (max.) (1) ÒD and E1Ódo not include mold flash or protusions. - Mold flash or protusions shall not exceed 0.15mm (0.006Ó) - Critical dimensions: ÒEÓ,Òa1Ó,ÒeÓ and ÒGÓ. N H N b r P e h x 45û t e l o ) s ( ct u d o e3 s b O OUTLINE AND MECHANICAL DATA 1 e e t le ) s t( o r P PowerSO20 (SLUG UP) o s b O A2 E3 R A4 A5 A c V D2 (x2) DETAIL A E2 E M 10 DETAIL A E2 E1 0.35 Gage Plane a1 S L -CSEATING PLANE G 20 D1 C (COPLANARITY) 11 PSO20DME D 0088529 C 9/11 TDA7297D Table 5. Revision History Date Revision May 2004 1 Description of Changes First Issue 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( TDA7297D 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. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. s b O The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners © 2004 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 11/11