 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| UNISONIC TECHNOLOGIES CO., LTD TDA7266 7+7W DUAL BRIDGE AMPLIFIER DESCRIPTION The UTC TDA7266 is a 7+7W dual bridge amplifier specially designed for TV and Portable Radio applications. LINEAR INTEGRATED CIRCUIT 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-15A *Pb-free plating product number: TDA7266L ORDERING INFORMATION Ordering Number Normal Lead Free Plating TDA7266-J15-A-T TDA7266L-J15-A-T PIN CONFIGURATION 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+ Package HZIP-15A Packing Tube www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd 1 of 7 QW-R107-037,A TDA7266 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT Vcc 0.22F 4 7 S-GND 0.22F 9 VREF 12 6 3 + - 13 470F 1 OUT1+ 100nF IN1 ST-BY + + - 2 15 OUT1OUT2+ IN2 MUTE PW-GND 8 + 14 OUT2- UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R107-037,A TDA7266 ABSOLUTE MAXIMUM RATINGS LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 20 V Output Peak Current (internally limited) IOUT 2 A Power Dissipation (TC =70 ) PD 33 W Junction Temperature TJ +125 Operating Temperature TOPR 0 ~ +70 Storage Temperature TSTG -40 ~ +150 Note: 1.Absolute maximum ratings are those values beyond which the device which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2.The device is guaranteed to meet performance specification within 0 ~+70 operating temperature range and assured by design from -20 ~+85 , characteristic and correlation with static process control. THERMAL DATA PARAMETER Thermal Resistance Junction to Case SYMBOL JC RATINGS 1.4 UNIT /W ELECTRICAL CHARACTERISTICS(VCC=11V, RL =8, f=1kHz, Ta=25 , 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 Mute Threshold Mute Attenuation STAND BY FUNCTION STAND-BY Threshold STAND-BY Current V6=GND 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 VMTHD AMUTE VTST-BY IST-BY for VCC>6.4V, VOUT= -30dB for VCC<6.4V, VOUT= -30dB MIN 3 TYP 11 150 48 30 7 0.05 60 26 56 150 MAX 18 120 65 UNIT V mV V mA k W % % dB dB dB dB 25 6.3 0.2 1 27 0.5 46 25 40 2.3 2.9 4.1 VCC/2-1.0 VCC/2-0.75 VCC/2-0.5 60 0.8 80 1.3 1.8 100 V V dB V A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R107-037,A TDA7266 APPLICATION SUGGESTION For Microprocessor Application LINEAR INTEGRATED CIRCUIT 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 0.22F IN1 ST-BY R1 10k P IN2 MUTE R2 10k C4 1F C2 10F S-GND C3 0.22F 9 2 12 6 OUT1OUT2+ 4 7 3 13 C5 470F OUT1+ C6 100nF 1 TDA7266 15 PW-GND 14 OUT28 Fig. 1 Microprocessor Application UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R107-037,A TDA7266 APPLICATION SUGGESTION(Cont.) +Vcc(V) +18 LINEAR INTEGRATED CIRCUIT 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 MUTE ST-BY OFF Fig 2 Microprocessor Driving Signals UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R107-037,A TDA7266 APPLICATION SUGGESTION(Cont.) For Low Cost Application LINEAR INTEGRATED CIRCUIT 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 IN1 R1 47k R2 47k C4 10F S-GND C5 0.22F IN2 MUTE 6 9 2 12 OUT1OUT2+ C3 0.22F IN1 ST-BY 4 7 3 13 C1 470F OUT1+ C2 100nF 1 TDA7266 15 PW-GND 14 OUT28 Fig 3 Stand Alone Low Cost Application UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R107-037,A TDA7266 TYPICAL CHARACTERISTICS 5.0000 4.0000 3.0000 2.0000 Vcc=11V RI=8 POUT=1W LINEAR INTEGRATED CIRCUIT Gain vs Frequency 70 65 60 Quiescent Current vs Supply Voltage Level (dBr) 0.0 -1.000 -2.000 -3.000 -4.000 -5.000 10 10 0 1k Frequency (Hz) 10k 100k IQ (mA) 1.0000 55 50 4 5 40 35 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 7 of 7 QW-R107-037,A |
Price & Availability of TDA7266
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |