UNISONIC TECHNOLOGIES CO., LTD TA8207K LINEAR INTEGRATED CIRCUIT LOW FREQUENCY POWER AMPLIFIER DESCRIPTION The UTC TA8207K is an audio power IC with built-in two channels and thermal shut down protection circuit. The IC is developed for portable radio cassette tape recorder with power ON/OFF switch. FEATURES *High Power : POUT=2.5W / CH (Typ.) (VCC=9V, RL=4, f=1KHz, THD=10%) : POUT=4.6W / CH (Typ.) (VCC=12V, RL=4, f=1KHz, THD=10%) *Low Popping Noise at Power ON *Small Quiescent Current: ICCQ=21mA (Typ.) (VCC=9V, VIN=0) *Soft Clip *Built-in Thermal Shut Down Protection Circuit *Bast for Supply Voltage 9V, 12V *Operation Supply Voltage Range: VCC=6-15V ORDERING INFORMATION Order Number Lead Free Halogen Free TA8207KL-F12-H-T TA8207KL-F12-H-T Package Packing FSIP-12H Tube MARKING www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 1 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified) PARAMETER Supply Voltage Output Current (Peak / CH) Power Dissipation Operating Temperature Storage Temperature SYMBOL VCC IO(PEAK) PD TOPR TSTG VALUE 20 2.5 12.5 -20 ~ + 75 -55 ~ + 150 ELECTRICAL CHARACTERISTICS (VCC=9V, RL=4Ω, RG=600Ω, f=1kHz, TA=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Quiescent Current ICCQ VIN=0 POUT(1) THD=10% Output Power POUT(2) VCC=12V,THD=10% Total Harmonic Distortion THD POUT=0.4W / ch Output Noise Voltage eN RG=10kΩ, BW=20Hz ~ 20kHz Input Resistance RIN RF=120Ω GV(1) VOUT=0.775VRMS Voltage Gain GV(2) RF=0, VOUT=0.775VRMS RG=600Ω Ripple Rejection Ratio RR Fripple=100Hz RG=600Ω, Amp1<->2 Cross Talk CT VOUT=0dBm, f=1kHz Input Offset Voltage V6,V7 Stand-by Current ISTDBY SW1->OFF UNIT V A W °C °C MIN 2.0 43 TYP 21 2.5 4.6 0.2 0.3 30 MAX 45 45 47 1.0 1.0 UNIT mA W W % mVRMS kΩ dB 56.5 dB 52 dB 50 dB 30 1 60 mV μA TYPICAL DC VOLTAGE OF EACH TERMINAL (VCC=9V, TA=25°C, unless otherwise specified) TERMINAL NO. DC Voltage 1 8.7 2 4.5 3 VCC 4 5.0 5 0.7 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 0.03 7 0.03 8 0.7 9 GND 10 4.5 11 8.7 12 VCC 3 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT TEST CIRCUIT VCC1 - - C11 100μF + + *2 SW1 VCC2 3 + - 6 + B.S.1 C4 100μF - + R11 120Ω 2 C6 0.15μF - 30kΩ RIPPLE + OUT - 1 RL BIAS CIRCUIT THE RMAL SHUT DOWN PROTECTION CIRCUIT IN2 *1 CIN 45Ω 8 + R12 120Ω C9 1000μF + - + ch - 2 10 C5 100μF - OUT - 2 - + - 7 + C3 47μF C8 1000μF + - NF1 4 NF2 11 - C2 47μF ch - 1 45Ω 5 IN - 2 1 IN1 *1 CIN C1 100μF 12 + IN - 1 C10 1000μF B.S.2 C7 0.15μF RL 30kΩ 9 GND REMARK: 1.This IC can be used without coupling capacitor (CIN). If volume slide noise occurred by input offset voltage is undesirable, it needs to use the capacitor (CIN). 2.The condenser between the pin3 and the GND (C11) is for reducing pop noise when the power ON/OFF switch (SW1) is set to ON/OFF. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT APPLICATION INFORMATION 1. ADJUSTMENT OF VOLTAGE GAIN The voltage gain GV is obtained as follows by R1, R2 and RF in Fig.1. INPUT 6/7 R1 5/8 + - CNF AMP 2/10 R2 45Ω 47μF RF OUTPUT + 30kΩ GV=20λog RF+R1+R2 RF+R1 When RF=0Ω GV=56.5dB(typ.) When RF=120Ω GV=45dB(typ.) Reduction of GV is possible by increasing RF. However, it is recommended to use this at 40dB or over since the feedback increase is liable to produce oscillation. 2. THERMAL SHUTDOWN CIRCUIT The built-in thermal shut-down circuit can prevent the destruction of IC that abnormal temperature rise when the heat radiation is insufficient. The operation temperature is set at radiation fin temperature 175℃, at this temperature or over the bias is interrupted to prevent the destruction of IC. 3. INPUT STAGE Below circuit shows the input circuit of this IC. OUTPUT Q2 - + 30KΩ Q3 2/10 to DRIVER INPUT Q1 6/7 CIN 9 GND to BIAS NF 5/8 It is possible that without input coupling capacitor in the input circuit by use a PNP Transistor, Q1. However, 60mV max offset voltage is produced at pin (6) and (7). Application after checking volume slide noise is recommended. In order to cut the volume slide noise, insert the input capacitor (CIN) in series to interrupt the DC component. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT APPLICATION INFORMATION(Cont.) 4. OSCILLATION PREVENTIVE MEASURES For oscillation preventive capacitor C6 and C7 between the output terminal and GND, polyester film capacitor is recommended due to good characteristics for temperature and for high frequency. It is better that use this capacitor after the temperature test to check the oscillation allowance due to the characteristics of the capacitor is liable to be influenced by the temperature. Besides, as the position of the electrolytic capacitor has remarkable influence on the oscillation, connect C10 to VCC as close power GND as possible. At using this application with the voltage gain reduced, oscillation is liable to be produced. Apply the capacitor after checking enough for its capacity, type and mounting position. 5. POWER ON/OFF SWITCH There is power on/off switch at (3) pin. However, output power is changed by (3) pin supply voltage when(3) pin supply voltage I not same(12) pin supply voltage, after referring to attached date, select(3) pin supply voltage. 6. INPUT VOLTAGE When the excessive signal is input, turning-up is produced in the clip waveform. The turning-up point is VIN=300mVRMS (typ.): VCC=9V, RL=4Ω, f=1kHz: Enough care must be taken for this phenomenon. 7. GND LINE GND pin is not separated for pre-GND and for PW-GND. That is liable to cause distortion and cross talk worse. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS ICCQ,V2,V10-VCC RL=4Ω VIN=0 TA=25℃ 12 60 10 8 40 6 4 20 2 4 8 12 16 60 50 40 30 20 10 0 0 VCC=9V RL=4Ω RNF=120Ω TA=25℃ 70 Voltage Gain, GV (dB) Quiescent Current, ICCQ (mA) Gv-f 80 80 0 20 30 1K 100 Frequency, f (Hz) Supply Voltage, Vcc (V) THD - POUT 10 5 THD - POUT 30 VCC=9V RL=4Ω RNF=120Ω TA=25℃ Total Harmoic Distortion, THD (%) Total Harmoic Distortion, THD (%) 30 3 f=10kHz 1 100Hz 0.5 0.3 0.1 0.01 1kHz 10 5 VCC=12V RL=4Ω RNF=120Ω TA=25℃ 3 f=10kHz 1 0.5 100Hz 0.3 1kHz 0.1 0.03 10K 30K 100K 3K 0.1 0.3 1 3 10 Output Power, POUT (W) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 0.01 0.03 0.1 0.3 1 3 10 Output Power, POUT (W) 7 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS (Cont.) THD - POUT ICCQ2,V2,V10-VCC2 12 12 10 10 ICCQ2 8 8 6 6 30 10 5 3 VCC1=9V RL=4Ω f=1kHz RNF=120Ω TA=25℃ VCC2=5V 1 V2,V10 4 4 2 0 2 0 2 10 12 8 4 Supply Voltage, VCC2 (V) 14 0 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 7 8 9 0.5 0.3 0.1 0.01 0.03 0.1 0.3 1 3 10 Output Power, POUT (W) 8 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS (Cont.) ICCQ,V2,V10 - TA VCC=9V RL=4Ω POUT=0.4W f=1KHz 0.5 0.4 Quiescent Current, ICCQ (mA) Total Harmonic Distortion, THD (%) THD - TA 0.3 0.2 0.1 0 -40 -20 0 40 20 60 80 VCC=9V 10 RL=4Ω VIN=0 8 50 40 30 6 V2,V10 4 20 ICCQ 10 0 -40 100 -20 Ambient Temperature, TA(℃) 0 20 (1) (2) 8 6 (3) 4 (4) 2 0 0 20 40 60 80 9 2 1 1 2 3 4 5 6 7 Total Harmoic Distortion, THD(%) Output Voltage, POUT (W) Output Voltage, V2,V10 (V) Quiescent Current, ICCQ2 (mA) 3 0 Ambient Temperature, TA (℃) www.unisonic.com.tw 4 0 100 120 140 160 180 UNISONIC TECHNOLOGIES CO., LTD 0 RL=4Ω f=1kHz VCC=12V 5 Power Dissipation, PD (W) 10 80 60 PD - POUT (1) INFNITE HEAT SINK (2) 80cm2 × 2mm AL HEAT SINK (3) 18cm2 × 2mm AL HEAT SINK (4) NO HEAT SINK 12 40 Ambient Temperature, TA(℃) PD -TA 14 Allowable Power Dissipation, PD (W) 2 Output Voltage V2,V10 (V) 9 of 10 QW-R107-013.E TA8207K LINEAR INTEGRATED CIRCUIT Quiescent Current, ICCQ (mA) Total Harmonic Distortion, THD (%) Power Dissipation, PD(W) Allowable Power Dissipation, PD(W) Output Voltage, V2,V10 (V) TYPICAL CHARACTERISTICS (Cont.) 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 10 of 10 QW-R107-013.E