UNISONIC TECHNOLOGIES CO., LTD TDA7266 LINEAR INTEGRATED CIRCUIT 7+7W DUAL BRIDGE AMPLIFIER DESCRIPTION HZIP-15A The UTC TDA7266 is a 7+7W dual bridge amplifier specially designed for TV and Portable Radio applications. FEATURES * 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 HZIP-15B HZIP-15D ORDERING INFORMATION Ordering Number Lead Free Halogen Free TDA7266L-J15-A-T TDA7266G-J15-A-T TDA7266L-J15-B-T TDA7266G-J15-B-T TDA7266L-J15-D-T TDA7266G-J15-D-T www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd Package Packing HZIP-15A HZIP-15B HZIP-15D Tube Tube Tube 1 of 8 QW-R107-037,C TDA7266 LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION HZIP-15A 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 OUT2+ OUT2Vcc IN2 N.C. N.C. S-GND PW-GND STAND-BY(ST-BY) MUTE N.C. IN1 Vcc OUT1OUT1+ HZIP-15B 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 OUT2+ OUT2Vcc IN2 N.C. N.C. S-GND PW-GND STAND-BY(ST-BY) MUTE N.C. IN1 Vcc OUT1OUT1+ HZIP-15D 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUT 2+ OUT 2VCC IN 2 N.C. N.C. S-GND PW-GND STAND-BY(ST-BY) MUTE N.C. IN 1 VCC OUT 1OUT 1+ 2 of 8 QW-R107-037,C TDA7266 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM Vcc 0.22µF IN1 ST-BY 4 3 13 470µF + - 1 OUT1+ + 2 OUT1- + - 15 OUT2+ + 14 OUT2- 100nF 7 S-GND 0.22µF IN2 MUTE 9 VREF 12 6 PW-GND 8 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R107-037,C TDA7266 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 20 V Output Peak Current (internally limited) IOUT 2 A HZIP-15A / HZIP-15B 33 Power Dissipation (TC =70°C) PD W HZIP-15D 20 °C Junction Temperature TJ +125 °C Operating Junction Temperature TJ 0 ~ +70 °C Storage Temperature TSTG -40 ~ +150 Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA Junction to Case PARAMETER HZIP-15A / HZIP-15B HZIP-15D SYMBOL θJC RATINGS 1.4 2.5 UNIT °C /W ELECTRICAL CHARACTERISTICS(VCC=11V, RL =8Ω, f=1kHz, Ta=25°C, unless otherwise specified) PARAMETER Supply Range Output Offset Voltage Total Output Noise Voltage Total Quiescent Current Input Resistance Output Power Total Harmonic Distortion Crosstalk Closed Loop Voltage Gain Voltage Gain Matching Supply Voltage Rejection Thermal Threshold MUTE FUNCTION SYMBOL TEST CONDITIONS VCC VO(OFF) eN A curve, f=20Hz ~ 20kHz IQ RIN POUT THD=10% POUT=1W THD POUT=0.1~2W, f=100Hz~15kHz CT Gv △Gv SVR f=100Hz, VR=0.5V Tt for VCC>6.4V, VOUT= -30dB for VCC<6.4V, VOUT= -30dB MIN 3 25 6.3 TYP 11 150 48 30 7 0.05 46 25 60 26 40 56 150 2.3 2.9 Mute Threshold VMTHD Mute Attenuation STAND BY FUNCTION STAND-BY Threshold STAND-BY Current V6=GND AMUTE 60 80 VTST-BY IST-BY 0.8 1.3 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MAX 18 120 65 0.2 1 27 0.5 4.1 VCC/2-1.0 VCC/2-0.75 VCC/2-0.5 UNIT V mV μV mA kΩ W % % dB dB dB dB °C V V dB 1.8 100 V μA 4 of 8 QW-R107-037,C TDA7266 LINEAR INTEGRATED CIRCUIT APPLICATION SUGGESTION For 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 Fig 2). At first ST-BY signal (from mP) goes high and the voltage across the ST-BY terminal (Pin 7) 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 (C3, C5) start to charge. It’s necessary to maintain 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. Vcc C1 0.22µF 4 IN1 ST-BY 13 1 C5 470µF OUT1+ 2 OUT1- 15 OUT2+ C6 100nF 7 R1 10k C2 10µF S-GND µP 3 C3 0.22µF 9 12 IN2 MUTE TDA7266 6 R2 10k C4 1µF PW-GND 14 OUT28 Fig. 1 Microprocessor Application UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R107-037,C TDA7266 LINEAR INTEGRATED CIRCUIT APPLICATION SUGGESTION(Cont.) +Vcc(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 Fig 2 Microprocessor Driving Signals UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R107-037,C TDA7266 LINEAR INTEGRATED CIRCUIT APPLICATION SUGGESTION(Cont.) For 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 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. Vcc C3 0.22µF Vcc R1 47k R2 47k IN1 4 ST-BY 3 13 1 C1 470µF OUT1+ 2 OUT1- 15 OUT2+ C2 100nF 7 C4 10µF S-GND C5 0.22µF 9 12 TDA7266 IN2 MUTE PW-GND 6 14 OUT28 Fig 3 Stand Alone Low Cost Application UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R107-037,C TDA7266 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS Quiescent Current vs Supply Voltage Gain vs Frequency 5.0000 70 Vcc=11V RI=8O POUT=1W 4.0000 3.0000 65 60 55 1.0000 IQ (mA) Level (dBr) 2.0000 0.0 -1.000 50 45 -2.000 40 -3.000 35 -4.000 -5.000 10 10 0 1k Frequency (Hz) 10k 100k 30 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Vsupply (V) UTC assumes no responsibility for equipm ent failures that result from using products at values that exceed, even mom entarily, rated values (such as m aximum ratings, operating condition ranges, or other param eters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or system s where m alfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The inform ation presented in this docum ent does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 8 QW-R107-037,C