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| www..com UNISONIC TECHNOLOGIES CO., LTD TDA2050 32W HI-FI AUDIO POWER AMPLIFIER DESCRIPTION The UTC TDA2050 is a monolithic integrated circuit with high power capability and is designed to use as an class AB audio amplifier. It can deliver typically 50W music power into 4 load over 1 sec at VS=22.5V, f = 1KHz. The device is most suitable for both Hi-Fi and high class TV sets on the strength of its high supply voltage and very low harmonic and crossover distortion. LINEAR INTEGRATED CIRCUIT 1 TO-220B FEATURES * High output power (50W Music Power IEC 268.3 Rules) * High operating supply voltage (50V) * Single or split supply operations * Very low distortion * Short circuit protection (OUT to GND) * Thermal shutdown *Pb-free plating product number: TDA2050L ORDERING INFORMATION Ordering Number Normal Lead Free Plating TDA2050-TB5-T TDA2050L-TB5-T Package TO-220B Packing Tube PIN CONFIGURATION 5 4 3 2 1 *TAB CONNECTED TO PIN 3 +VS OUTPUT -VS INVERTING INPUT NON INVERTING INPUT www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., LTD 1 QW-R107-036,A TDA2050 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT 5 SHORT CIRC. PROTECT. 4 VREF SHORT CIRC. PROTECT. 3 1 2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 QW-R107-036,A TDA2050 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Input Voltage Differential Input Voltage Output Peak Current (internally limited) Power Dissipation TC= 75 LINEAR INTEGRATED CIRCUIT SYMBOL RATINGS UNIT VS 25 V VIN VS VIN(DIFF) 15 IOUT 5 PD 25 W Junction Temperature TJ +125 Storage Temperature TSTG -40 ~ +150 Note:1.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. 2.The device is guaranteed to meet performance specification within 0~70 operating temperature range and assured by design from -40~85. THERMAL DATA PARAMETER Thermal Resistance junction-case SYMBOL JC RATINGS 3 UNIT /W ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit, VS = 18V, Ta = 25, f = 1 kHz, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS Supply Voltage VS VS = 4.5V Quiescent Drain Current ID VS = 25V Input Bias Current IB VS = 22V Input Offset Voltage VIN(OS) VS = 22V Input Offset Current IIN(OS) VS = 22V RL = 4 RL = 8 D = 0.5% RL = 8, VS = 22V RMS Output Power PO RL = 4 RL = 8 D = 10% RL = 8, VS = 22V Music Power IEC268.3 RULES D = 10%, T = 1s, VS = 22.5V, RL = 4 RL = 4 f = 1kHz, PO = 0.1 ~ 24W f = 100Hz ~ 10kHz, PO = 0.1 ~ 18W Total Harmonic Distortion THD RL = 8, VS = 22V f = 1kHz, PO = 0.1 ~ 20W f = 100Hz ~ 10kHz, PO = 0.1 ~ 15W Slew Rate SR Open Loop Voltage Gain GV Closed Loop Voltage Gain GV Power Bandwidth (-3dB) BW RL = 4, VIN= 200mV Curve A Total Input Noise eN B = 22Hz ~ 22kHz Input Resistance (pin 1) RIN Supply Voltage Rejection SVR RS = 22K, f =100Hz, VRIPPLE =0.5Vrms PO = 28W, RL = 4 Efficiency PO = 25W, RL = 8, VS = 22V MIN 4.5 TYP 18 21 0.4 MAX 25 50 90 0.5 15 200 UNIT V mA A mV nA 24 22 27 18 25 35 22 32 50 0.03 0.5 0.5 W % 0.02 0.5 8 80 30 30.5 31 20 ~ 80000 4 5 10 500 45 65 67 5 V/s dB dB Hz V k dB % UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 QW-R107-036,A TDA2050 TYPICAL APPLICATION CIRCUIT FOR SPLIT SUPPLY APPLICATION SUGGESTIONS LINEAR INTEGRATED CIRCUIT +VS C1 22F VIN R1 22k C5 220F 1 5 + C3 100nF 2 UTC TDA2050 3 4 R4 2.2 C7 0.47F -VS R3 22k RL R2 680 C2 22F C4 100nF C6 220F Figure.1 Split Supply Typical Application Circuit The following table demonstrates the recommended values of the external components are those shown on above circuit. Different values can be used. COMPONENT R1 R2 R3 R4 C1 PURPOSE Input Impedance Feedback Resistor TYPICAL 22k 680 22k 2.2 1F 22F 100nF 220F 0.47F RECOMMENDED VALUE LARGER SMALLER Increase of Input Impedance Decrease of Input Impedance Decrease of Gain* Increase of Gain Increase of Gain Decrease of Gain* Danger of Oscillations Higher Low-frequency cut-off Increase of Switch ON/OFF Higher Low-frequency cut-off Noise Danger of Oscillations Danger of Oscillations Danger of Oscillations Frequency Stability Input Decoupling DC Inverting Input DC C2 Decoupling C3, C4 Supply Voltage Bypass C5, C6 Supply Voltage Bypass C7 Frequency Stability * The gain must be higher than 24dB UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 QW-R107-036,A TDA2050 TYPICAL APPLICATION CIRCUIT(CONT.) FOR SINGLE SUPPLY APPLICATION SUGGESTIONS LINEAR INTEGRATED CIRCUIT +VS C3 1000F 1 R3 22k 5 + C5 100nF C7 1000F R1 22k IN C1 2.2F 2 UTC TDA2050 3 4 R5 22k R6 2.2 C6 0.47F RL C4 22F C2 1000F R2 22k R4 680 Figure.2 Single Supply Typical Application Circuit The following table demonstrates the recommended values of the external components are those shown on above circuit. Different values can be used. COMPONENT R1, R2, R3 R4 R5 R6 C1 C2 C3 C4 PURPOSE Biasing Resistor Feedback Resistor Frequency Stability Input Decoupling DC Supply Voltage Rejection Supply Voltage Bypass TYPICAL 22k 22k 680 2.2 2.2F 100F 1000F 22F 100nF 0.47F 1000F Increase of Switch ON/OFF RECOMMENDED VALUE LARGER SMALLER Increase of Gain Decrease of Gain* Danger of Oscillations Worse Turn-off Transient Worse Turn-on Delay Decrease of Gain* Increase of Gain Higher Low-frequency cut-off Danger of Oscillations Worse of Turn-off Transient Higher Low-frequency cut-off Danger of Oscillations Danger of Oscillations Higher Low-frequency cut-off Inverting Input DC Decoupling C5 Supply Voltage Bypass C6 Frequency Stability C7 Output DC Decoupling * The gain must be higher than 24dB NOTE: If the supply voltage is lower than 40V and the load is 8(or more), a lower value of C2(i.e. 22F) can be used. C7 can be larger than 1000F only if the supply voltage does not exceed 40V. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 QW-R107-036,A TDA2050 Output Power vs. Supply Voltage 40 35 30 25 PO (W) PO (W) LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS (Split Supply Test Circuit, unless otherwise specified) Output Power vs. Supply Voltage 40 35 THD = 10% 30 25 THD= 10% RL = 4 f = 1kHz RL = 8 f = 1kHz 20 15 10 5 0 0 5 10 + THD = 0.5% 20 15 10 5 THD= 0.5% 15 20 VS (V) 25 30 0 0 5 10 15 20 VS (V) 25 30 Quiescent Current vs. Supply Voltage 60 55 50 45 I D (mA) PD (W) Total Power Dissipation and Efficiency vs. Output Power 40 35 30 25 20 15 10 5 VS = 18V RL = 4 f = 1kHz 80 70 60 50 40 30 20 10 0 RL = 4 m PD m (%) 40 35 30 25 20 0 5 10 15 20 VS (V) 25 30 0 0 5 10 15 20 25 PO (W) 30 35 40 Total Power Dissipation and Efficiency vs. Output Power 28 24 20 PD (W) VS = 22V RL = 8 f = 1kHz 80 70 60 50 40 30 20 10 0 m PD m (%) 16 12 8 4 0 0 5 10 15 20 25 PO (W) 30 35 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 QW-R107-036,A TDA2050 LINEAR INTEGRATED CIRCUIT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) 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 systems where malfunction 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 information presented in this document 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 QW-R107-036,A |
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