TDA7264 25 W + 25 W stereo amplifier with mute and standby Features Wide supply voltage range (up to ±22.5 V) Split supply High output power – 25 W + 25 W into 8 Ω with VS = ±20 V and THD = 10% No “pop” at turn on/off Mute (“pop”-free) Standby feature (low Iq) Few external components Short-circuit protection Thermal overload protection Table 1. Multiwatt8 The TDA7264 is class-AB dual audio power amplifier assembled in a Multiwatt package. It is specially designed for high-quality sound applications such as hi-fi music centers and stereo TV sets. Device summary Order code Operating temperature TDA7264 Figure 1. Description 0 to 70 °C Package Packaging Multiwatt8 Tube Applications circuit +VS 15K 1µF MUTE/ ST-BY IN (L) +5V 2 4 6 + 3 - 1µF 15K 1000µF +VS 18K OUT (L) 4.7Ω RL (L) 100nF GND 7 µP 1µF IN (R) 8 + 1000µF 1 5 -VS OUT (R) 4.7Ω RL (R) 100nF D94AU069A July 2009 Doc ID 1477 Rev 6 1/14 www.st.com 14 Pin description 1 TDA7264 Pin description Figure 2. Pin connection (top view) 8 IN (1) 7 GND 6 IN (2) 5 -VS 4 MUTE/ST-BY 3 OUTPUT (2) 2 +VS 1 OUTPUT (1) Tab connected to pin 5 D94AU096 2/14 Doc ID 1477 Rev 6 TDA7264 Electrical specifications 2 Electrical specifications 2.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol 2.2 Value Unit VS DC supply voltage ±25 V IO Output Peak Current (internally limited) 4.5 A Ptot power Dissipation Tcase = 70°C 30 W Top Operating temperature -20 to 85 °C Tj Junction temperature -40 to 150 °C Tstg Storage temperature -40 to 150 °C Thermal data Table 3. 2.3 Parameter Thermal data Symbol Parameter Rth j-case Thermal resistance, junction to case Min - Typ - Max 2 Unit °C/W Electrical specifications Unless otherwise stated, the results in Table 4 below are given for the conditions: VS = ±20 V, RL (load) = 8 Ω, RS (source) = 50 Ω, f = 1 kHz, and Tamb = 25° C. See also the applications circuit in Figure 12 on page 9. Table 4. Symbol Electrical specifications Parameter Conditions Min Typ Max Unit VS Supply voltage range - ±5 - ±22.5 V Iq Total quiescent current - - 80 130 mA POM Music output power (1) THD = 10%, RL = 8 Ω, VS = ±22.5 V - 32 - W THD = 10%: RL = 8 Ω, VS = ±20 V RL = 4 Ω, VS = ±16 V 20 25 25 - THD = 1%: RL = 8 Ω, VS = ±20 V RL = 4 Ω, VS = ±16 V - PO Output power Doc ID 1477 Rev 6 W 20 20 - 3/14 Electrical specifications Table 4. Electrical specifications (continued) Symbol THD TDA7264 Parameter Conditions Total harmonic distortion Min Typ Max PO = 1 W, f = 1 kHz, RL = 8 Ω, VS = ±20 V, - 0.02 - PO = 0.1 to 15 W, f = 100 Hz to 15 kHz, RL = 8 Ω, VS = ±20 V - - 0.5 PO = 1 W, f = 1 kHz, RL = 4 Ω, VS = ±16 V, - 0.03 - PO = 0.1 to 12 W, f = 100 Hz to 15 kHz, RL = 4 Ω, VS = ±16 V - - 1.0 Unit % CT Crosstalk f = 1 kHz f = 10 kHz - 70 60 - dB SR Slew rate - - 10 - V/µs GV Closed-loop voltage gain - 29 30 31 dB ∆GV Voltage gain matching - - 0.2 - dB eN Total input noise A curve f = 20 Hz to 22 kHz - 2.5 3.5 8 - µV Ri Input resistance - 15 20 - kΩ SVRR Supply voltage rejection ratio fr = 100 Hz, Vr = 0.5 V - 60 - dB Tj Junction temperature at thermal shut-down - - 145 - °C Mute mode (see also Table 5 on page 8) VTMUTE Mute/play threshold - -7 -6 -5 V AMUTE Mute attenuation - 60 90 - dB Standby mode (see also Table 5 on page 8) VTSTBY Standby/mute threshold - -3.5 -2.5 -1.5 V ASTBY Standby attenuation - - 110 - dB Iq_STBY Quiescent current in standby - - 3 - mA 1. FULL POWER up to VS = ±22.5 V with RL = 8 Ω and VS = ±16 V with RL = 4 Ω. MUSIC POWER is the maximum power which the amplifier is capable of producing across the rated load resistance (regardless of non-linearity) 1 s after the application of a sinusoidal input signal of frequency 1 kHz. 4/14 Doc ID 1477 Rev 6 TDA7264 3 Characterization curves Characterization curves Figure 3. Quiescent current vs Supply Voltage Figure 4. Frequency response Doc ID 1477 Rev 6 5/14 Characterization curves 6/14 TDA7264 Figure 5. Output power vs supply voltage Figure 6. Distortion vs output power Figure 7. Crosstalk vs frequency Doc ID 1477 Rev 6 TDA7264 Characterization curves Figure 8. SVRR vs frequency Figure 9. Attenuation and quiescent current vs voltage on pin 4 Figure 10. Power dissipation vs output power Doc ID 1477 Rev 6 7/14 Mute and standby modes 4 TDA7264 Mute and standby modes Pin 4 (MUTE/STANDBY) controls the amplifier status by two different thresholds referenced to +VS as given in Table 5 below. See also Table 4: Electrical specifications on page 3. Table 5. Mute and standby thresholds on pin 5 Nominal voltage on pin 4, VPIN4 Mode Remarks > +VS - 2.5 V Standby Output stages turned off > +VS - 6.0 V, < +VS - 2.5 V Mute Output stages turned on, amplifiers muted < +VS - 6.0 V Play Amplifiers active Figure 11. Mute and standby thresholds on pin 4 +VS (V) 20 t -VS -20 VIN (mV) Vpin4 (V) VS VS-2.5 VS-6 VS-10 Iq (mA) 0 VOUT (V) OFF PLAY STDBY PLAY OFF STDBY STDBY MUTE 8/14 D94AU084 MUTE Doc ID 1477 Rev 6 MUTE MUTE TDA7264 5 Applications information Applications information Figure 12. Schematic of demo board +VS R2 15K B A R1 SW1 ST-BY C3 1µF MUTE/ ST-BY C1 1µF Q1 6 DZ R4 15K + 3 OUT (L) GND SW2 MUTE C2 1µF SW2 R5 4.7Ω C8 100nF R3 18K A IN (R) 7 8 - 1 + A Standby A B Standby B B Mute B A Play -VS D94AU068B C7 100nF RL (L) OUT (R) 5 Mode A C5 100nF 2 4 - B SW1 IN (L) C4 1000µF +VS C6 1000µF R6 4.7Ω C9 100nF RL (R) Figure 13. Component layout of demo-board Doc ID 1477 Rev 6 9/14 Applications information Table 6. 10/14 TDA7264 Recommended component values for demo board Larger than recommended value Smaller than recommended value Component Recommended value R1 10 kΩ Mute circuit Decrease in DZ biasing current - R2 15 kΩ Mute circuit VPIN4 shifted downwards VPIN4 shifted upwards R3 18 kΩ Mute circuit VPIN4 shifted upwards VPIN4 shifted downwards R4 15 kΩ Mute circuit VPIN4 shifted upwards VPIN4 shifted downwards R5, R6 4.7 Ω Frequency stability Danger of oscillation Danger of oscillation C1, C2 1 µF Input AC coupling - Higher lowfrequency cutoff C3 1 µF Standby/mute time constant Longer on/off time Shorter on/off time C4, C6 1000 µF Supply voltage decoupling - Danger of oscillation C5, C7 0.1 µF Supply voltage decoupling - Danger of oscillation C8, C9 0.1 µF Frequency stability - - Dz 5.1 V Mute circuit - - Q1 BC107 Mute circuit - - Purpose Doc ID 1477 Rev 6 TDA7264 6 Package mechanical data Package mechanical data The TDA7264 comes in a 8-pin Multiwatt package with pin 5 internally connected to the metal tab. Figure 14. Multiwatt8 outline drawing 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. Doc ID 1477 Rev 6 11/14 Package mechanical data Table 7. TDA7264 Multiwatt8 package dimensions Dimensions in mm Dimensions in inches Reference Min 12/14 Typ Max Min Typ Max A - - 5.00 - - 0.197 B - - 2.65 - - 0.104 C - - 1.60 - - 0.063 E 0.49 - 0.55 0.019 - 0.22 F 0.78 - 0.85 0.031 - 0.033 G 2.40 2.54 2.68 0.094 0.100 0.106 G1 17.64 17.78 17.92 0.694 0.700 0.706 H1 19.60 - - 0.772 - - H2 - - 20.20 - - 0.787 L 20.35 - 20.65 0.801 - 0.813 L2 17.05 17.20 17.35 0.671 0.677 0.683 L3 17.25 17.50 17.75 0.679 0.689 0.699 L4 10.30 10.70 10.90 0.406 0.421 0.429 L7 2.65 - 2.90 0.104 - 0.114 N - - - - - - N1 - - - - - - P - - - - - - Q - - - - - - R1 - - - - - - S 1.90 - 2.60 0.075 - 0.102 S1 1.90 - 2.60 0.075 - 0.102 U 0.40 - 0.55 0.016 - 0.022 V - 5 deg - - 5 deg - Z 0.70 - 0.85 - - 0.033 Diam.1 3.65 - 3.85 0.144 - 0.152 Diam.2 - - - - - - Doc ID 1477 Rev 6 TDA7264 7 Revision history Revision history Table 8. Document revision history Date Revision Changes Jan-2004 5 First issue in EDOCS 01-Jul-2009 6 Removed references to TDA7264A Doc ID 1477 Rev 6 13/14 TDA7264 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2009 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 - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 14/14 Doc ID 1477 Rev 6