Datasheet

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TDA7266M

7W MONO BRIDGE AMPLIFIER

WIDE SUPPLY VOLTAGE RANGE (3-18V)

MINIMUM EXTERNAL COMPONENTS

– NO SWR CAPACITOR

– NO BOOTSTRAP

– NO BOUCHEROT CELLS

– INTERNALLY FIXED GAIN

STAND-BY & MUTE FUNCTIONS

SHORT CIRCUIT PROTECTION

THERMAL OVERLOAD PROTECTION

DESCRIPTION

The TDA7266M is a mono bridge amplifier spe-

cially designed for TV and Portable Radio appli-

cations.

July 2002

Vref

ST-BY 7

0.22µF

133

D98AU831A

OUT1+

OUT1-

MUTE 6 8

S-GND

PW-GND

470µF 100nF

BLOCK AND APPLICATION DIAGRAM

Multiwatt 15

ORDERING NUMBER:

TDA7266M

TECHNOLOGY BI20II

1/9

Downloaded from Arrow.com.

Summary of content (9 pages)

PAGE 1
TDA7266M ® 7W MONO BRIDGE AMPLIFIER WIDE SUPPLY VOLTAGE RANGE (3-18V) MINIMUM EXTERNAL COMPONENTS – NO SWR CAPACITOR – NO BOOTSTRAP – NO BOUCHEROT CELLS – INTERNALLY FIXED GAIN STAND-BY & MUTE FUNCTIONS SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION TECHNOLOGY BI20II Multiwatt 15 ORDERING NUMBER: TDA7266M DESCRIPTION The TDA7266M is a mono bridge amplifier specially designed for TV and Portable Radio applications. BLOCK AND APPLICATION DIAGRAM VCC 470µF 3 0.
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TDA7266M ABSOLUTE MAXIMUM RATINGS Symbol Value Unit VS IO Supply Voltage Output Peak Current (internally limited) 20 2 V A Ptot Total Power Dissipation (Tcase = 70°C) 33 W Top Operating Temperature 0 to 70 °C -40 to +150 °C Tstg, Tj Parameter Storage and Junction Temperature THERMAL DATA Symbol Rth j-case Description Value Thermal Resistance Junction to case Typ. 1.4 Unit Max. 2 °C/W PIN CONNECTION (Top view) 15 N.C. 14 N.C. 13 VCC 12 N.C. 11 N.C. 10 N.C.
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TDA7266M ELECTRICAL CHARACTERISTICS (Continued) Symbol VTST-BY IST-BY eN Parameter St-by Threshold ST-BY current V6 = GND Total Output Noise Voltage Test Condition Min. 0.8 A curve f = 20Hz to 20kHz APPLICATION SUGGESTION STAND-BY AND MUTE FUNCTIONS (A) Microprocessor Application In order to avoid annoying "Pop-Noise" during Turn-On/Off transients, it is necessary to guarantee the right St-by and mute signals sequence. It is quite simple to obtain this function using a microprocessor (Fig. 1 and 2).
PAGE 4
TDA7266M Figure 2: 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 (B) Low Cost Application In low cost applications where the mP is not present, the suggested circuit is shown in fig.3. The St-by and mute terminals are tied together and they are connected to the supply line via an 4/9 Downloaded from Arrow.com. MUTE ST-BY OFF D96AU259 external voltage divider.
PAGE 5
TDA7266M Figure 3a: Stand-alone Low-cost Application. VCC Vs C3 0.22µF R1 47K 4 1 C1 470µF OUT1+ 2 OUT1- 13 + IN1 ST-BY R2 47K 3 C2 100nF 7 C4 10µF S-GND 9 Vref MUTE + 6 8 PW-GND D98AU834B Figure 3b: PCB and Component Layout of the Application Circuit (Fig. 1). DASHED PARTS ARE NOT TO BE CONSIDERED 5/9 Downloaded from Arrow.com.
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TDA7266M Figure 4: Distortion vs Output Power Figure 5: Distortion vs Output Power THD (%) THD(%) 10 10 Vcc = 11 V Rl = 8 ohm Vcc = 9V Rl= 8 ohm 1 1 f = 15 KHz f = 15KHz 0.1 0.1 f = 5 KHz f = 5 KHz f = 1 KHz f = 1KHz 0.010 0.1 1 10 0.010 0.1 1 Pout (W) 10 Pout (W) Figure 6: Distortion vs Frequency Figure 7: Gain vs Frequency THD(%) Level(dBr) 10 5.0000 4.0000 Vcc = 11 V Rl = 8 ohm 1 Vcc = 11V Rl = 8 ohm Pout = 1W 3.0000 2.0000 1.0000 0.0 -1.000 Pout = 100mW 0.1 -2.
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TDA7266M Figure 10: Mute Attenuation vs. V pin.6 Figure 11: Stand-By Attenuation vs Vpin.7 Attenuation (dB) 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 1 1.5 2 2.5 3 3.5 4 4.5 5 Vpin.6(V) Attenuation (dB) 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) Figure 12: Quiescent Current vs.
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TDA7266M mm DIM. MIN. TYP. inch 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 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.
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TDA7266M 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.