TDA7266

TDA7266 Datasheet 7 + 7 W dual bridge amplifier Features • • Multiwatt15 • • • Wide supply voltage range (3 - 18 V) Minimum external components – No SWR capacitor – No bootstrap – No boucherot cells – Internally fixed gain Standby and mute functions Short-circuit protection Thermal overload protection Description The TDA7266 is a dual bridge amplifier specially designed for TV and portable radio applications. Maturity status link TDA7266 Order code TDA7266 DS0184 - Rev 11 - June 2019 For further information contact your local STMicroelectronics sales office. www.st.com TDA7266 Block diagram 1 Block diagram Figure 1. Block and application diagram VCC 3 0.22µF 4 IN1 + 470µF 13 1 OUT1+ 2 OUT1- 15 OUT2+ 14 OUT2- 100nF ST-BY 7 S-GND 0.22µF IN2 9 Vref 12 + + - MUTE 6 PW-GND DS0184 - Rev 11 8 + page 2/17 TDA7266 Maximum ratings 2 Maximum ratings Table 1. Absolute maximum ratings Symbol Parameter Value Unit VS Supply voltage 20 V IO Output peak current (internally limited) 2 A Ptot Total power dissipation (Tcase= 70 °C) 33 W Top Operating temperature -10 to +85 °C Tstg Storage temperature Tj Junction temperature -40 to +150 °C Table 2. Thermal data DS0184 - Rev 11 Symbol Parameter Typ. Max. Unit Rth-jcase Thermal resistance junction-case 1.4 2 °C/W page 3/17 TDA7266 Pin connection 3 Pin connection Figure 2. Pin connection (top view) DS0184 - Rev 11 15 OUT2+ 14 OUT2- 13 VCC 12 IN2 11 N.C. 10 N.C. 9 S-GND 8 PW-GND 7 ST-BY 6 MUTE 5 N.C. 4 IN1 3 VCC 2 OUT1- 1 OUT1+ page 4/17 TDA7266 Electrical characteristics 4 Electrical characteristics VCC = 11 V, RL = 8 Ω, f = 1 kHz, Tamb = 25 °C unless otherwise specified. Table 3. Electrical characteristics Symbol VCC Iq Parameter Test conditions Supply range Min. Typ. Max. Unit 3 11 18 V 50 65 mA 120 mV Total quiescent current VOS Output offset voltage PO Output power THD = 10% 6.3 PO = 1 W THD Total harmonic distortion 7 0.05 PO = 1 W to 2 W CT AMUTE f = 100 Hz, VR = 0.5 V Crosstalk % 40 56 dB 46 60 dB 25 26 Mute attenuation TW Thermal threshold GV Closed loop voltage gain ∆GV DS0184 - Rev 11 Supply voltage rejection 0.2 1 f = 100 Hz to 15 kHz SVR W Voltage gain matching RI Input resistance VTMUTE Mute threshold VTST-BY ST-BY threshold IST-BY ST-BY current V6 = GND eN Total output noise voltage 27 0.5 dB 25 30 for VCC > 6.4 V; VO = -30 dB 2.3 2.9 4.1 for VCC < 6.4 V; VO = -30 dB VCC/2-1 VCC/2-0.75 VCC/2-0.5 0.8 1.3 1.8 V 100 µA A curve f = 20 Hz to 20 kHz 150 kΩ V µV page 5/17 TDA7266 Application suggestion 5 Application suggestion Standby and mute functions (A) Microprocessor application Turn-on/off transients, guarantee the right ST-BY and mute signal sequence. This function can be got thanks to a microprocessor (Figure 3. Microprocessor application and Figure 4. Microprocessor driving signals). At first ST-BY signal (from microprocessor) goes high and the voltage across the ST-BY terminal (Pin 7) starts to increase exponentially. The external RC network turns on slowly the biasing circuits of the amplifier, 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 (C3, C5) start to charge. The mute signal must be kept low until the capacitors are fully charged, so to avoid that the device goes to play mode causing a loud "Pop Noise" on the speakers. A delay of 100 - 200 ms between ST-BY and mute signals is suitable for a proper operation. Figure 3. Microprocessor application VCC C1 0.22µF IN1 3 4 + 1 C5 470µF OUT1+ 2 OUT1- 15 OUT2+ 14 OUT2- 13 C6 100nF - ST-BY R1 10K 7 C2 10µF S-GND µP 9 Vref C3 0.22µF IN2 MUTE R2 10K 12 + + - 6 C4 1µF PW-GND DS0184 - Rev 11 8 + page 6/17 TDA7266 Application suggestion Figure 4. Microprocessor driving signals +VS(V) +18 VIN (mV) VST-BY pin 7 1.8 1.3 0.8 VMUTE pin 6 4.1 2.9 2.3 Iq (mA) VOUT (V) OFF ST-BY PLAY MUTE ST-BY OFF MUTE (B) Low cost application In low cost applications where the microprocessor is not present, the suggested circuit is shown in Figure 5. Stand-alone low-cost application. The ST-BY and mute terminals are tied together and they are connected to the supply line via an external voltage divider. The device is switched on/off from the supply line and the external capacitor C4 is intended to delay the ST-BY and mute threshold exceeding, avoiding "Popping" problems. DS0184 - Rev 11 page 7/17 TDA7266 Application suggestion Figure 5. Stand-alone low-cost application VCC VCC C3 0.22µF R1 47K 4 + IN1 ST-BY R2 47K 3 1 C1 470µF OUT1+ 2 OUT1- 15 OUT2+ 14 OUT2- 13 C2 100nF 7 C4 10µF S-GND 9 Vref C5 0.22µF 12 IN2 + + - MUTE PW-GND 6 8 + Figure 6. PCB and component layout of the application circuit (Fig. 1) DS0184 - Rev 11 page 8/17 TDA7266 Typical characteristics 6 Typical characteristics Figure 7. Distortion vs. output power (VCC = 11 V) Figure 8. Distortion vs. output power (VCC = 9 V) THD (% ) T H D (% ) 10 10 V cc = 11 V R l = 8 oh m V cc = 9V Rl= 8 oh m 1 1 f = 1 5KH z f = 15 KH z 0.1 0.1 f = 5 KH z f = 5 K Hz f = 1 KH z f = 1 KH z 0.0 10 0.01 0 0 .1 1 0 .1 10 1 P ou t (W ) 10 Pou t (W ) Figure 9. Distortion vs. frequency Figure 10. Gain vs. frequency THD (%) Level(dBr) 10 5.000 0 4.0000 1 Vcc = 11V Rl = 8 ohm Pout = 1W 3.0000 V cc = 11 V Rl = 8 o hm 2.0000 1.0000 0.0 -1.00 0 P ou t = 10 0 mW 0.1 -2.00 0 -3.00 0 P ou t = 2W -4.00 0 0.0 10 100 1k freque ncy (Hz) DS0184 - Rev 11 10k 20k -5.00 0 10 10 0 1k 10 k 10 0k frequency (Hz) page 9/17 TDA7266 Typical characteristics Figure 12. Total power dissipation & efficiency vs. output power Figure 11. Output power vs. supply voltage P o (W) Ptot (W) 2 0.00 0 µ (%) 80 8 1 8.00 0 R l = 8 o hm f = 1KH z 1 6.00 0 7 1 4.00 0 70 Ptot 6 d = 10 % 1 2.00 0 60 µ 50 5 1 0.00 0 4 d = 1% 8 .000 0 6 .000 0 3 4 .000 0 2 2 .000 0 1 0 .0 2 .00 0 4 .00 0 6 .00 0 8 .00 0 1 0.00 1 2.00 1 4.00 1 6.00 1 8.00 0 Figure 14. Standby attenuation vs. Vpin. 7 Attenuation (dB) Attenuation (dB) 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 2 2.5 3 Vpin.6 (V) DS0184 - Rev 11 0 2 X Pout (W) 10 1.5 20 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 Figure 13. Mute attenuation vs. Vpin. 6 1 30 10 V s (V ) -100 40 Vcc = 11V Rl = 8ohm (both channels) f = 1KHz 3.5 4 4.5 5 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 Vpin.7 (V) page 10/17 TDA7266 Typical characteristics Figure 15. Quiescent current vs. supply voltage Iq (mA) 70 65 60 55 50 45 40 35 30 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Vsupply (V) DS0184 - Rev 11 page 11/17 TDA7266 Package information 7 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark. DS0184 - Rev 11 page 12/17 TDA7266 Multiwatt15 V package information 7.1 Multiwatt15 V package information Figure 16. Multiwatt15 V package outline Table 4. Multiwatt15 V package mechanical data Symbol Milimeters Min. Typ. Max. Min. Typ. Max. A 5 0.197 B 2.65 0.104 C 1.6 0.063 D 1 0.039 E 0.49 0.55 0.019 0.022 F 0.66 0.75 0.026 0.030 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.772 H2 DS0184 - Rev 11 Inches 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 0.870 0.886 L2 17.65 18.1 0.695 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 0.713 0.114 M 4.25 4.55 4.85 0.167 0.179 0.191 M1 4.63 5.08 5.53 0.182 0.200 0.218 S 1.9 2.6 0.075 0.102 page 13/17 TDA7266 Multiwatt15 V package information Symbol DS0184 - Rev 11 Milimeters Min. Typ. Inches Max. Min. Typ. Max. S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 page 14/17 TDA7266 Revision history Table 5. Document revision history DS0184 - Rev 11 Date Version Changes 24-Mar-2002 10 No history because of migration. 18-Jun-2019 11 Updated operating temperature value in Table 1. Absolute maximum ratings. page 15/17 TDA7266 Contents Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 4 Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 Application suggestion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 7.1 Multiwatt15 leads package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 DS0184 - Rev 11 page 16/17 TDA7266 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2019 STMicroelectronics – All rights reserved DS0184 - Rev 11 page 17/17