TA8207K

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UNISONIC TECHNOLOGIES CO., LTD TA8207K LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 10 Copyright © 2014 Unisonic Technologies Co., Ltd QW-R107-013.E 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.) ( V CC=9V, RL=4, f=1KHz, THD=10%) : P OUT=4.6W / CH (Typ.) ( V CC=12V, RL=4, f=1KHz, THD=10%) *Low Popping Noise at Power ON *Small Quiescent Current: ICCQ=21mA (Typ.) ( V CC=9V, VIN=0) *Soft Clip *Built-in Thermal Shut Down Protection Circuit *Bast for Supply Voltage 9V, 12V *Operation Supply Voltage Range: V CC=6-15V  ORDERING INFORMATION Order Number Package Packing Lead Free Halogen Free TA8207KL-F12-H-T TA8207KL-F12-H-T FSIP-12H Tube  MARKING

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 10 www.unisonic.com.tw QW-R107-013.E  PIN CONFIGURATION

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 10 www.unisonic.com.tw QW-R107-013.E  ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified) PARAMETER SYMBOL VALUE UNIT Supply Voltage V CC 20 V Output Current (Peak / CH) I O(PEAK) 2.5 A Power Dissipation P D 12.5 W Operating Temperature T OPR -20 ~ + 75 °C Storage Temperature T STG -55 ~ + 150 °C  ELECTRICAL CHARACTERISTICS (VCC=9V, RL=4Ω, RG=600Ω, f=1kHz, TA=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Quiescent Current I CCQ V IN=0 21 45 mA Output Power POUT(1) THD=10% 2.0 2.5 W POUT(2) V CC=12V,THD=10% 4.6 W Total Harmonic Distortion THD P OUT=0.4W / ch 0.2 1.0 % Output Noise Voltage e N R G=10kΩ, BW=20Hz ~ 20kHz 0.3 1.0 mV RMS Input Resistance R IN 30 k Ω Voltage Gain GV(1) RF=120Ω VOUT=0.775VRMS 43 45 47 dB GV(2) R F=0, VOUT=0.775VRMS 56.5 dB Ripple Rejection Ratio RR RG=600Ω Fripple=100Hz 52 dB Cross Talk C T RG=600Ω, Amp1<->2 VOUT=0dBm, f=1kHz 50 dB Input Offset Voltage V6,V7 30 60 mV Stand-by Current ISTDBY SW1->OFF 1 μA  TYPICAL DC VOLTAGE OF EACH TERMINAL (VCC=9V, TA=25°C, unless otherwise specified) TERMINAL NO. 1 2 3 4 5 6 7 8 9 10 11 12

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 10 www.unisonic.com.tw QW-R107-013.E  TEST CIRCUIT 123 45Ω 45Ω R11 120Ω 30kΩ ch - 2 ch - 1 BIAS CIRCUIT THE RMAL SHUT DOWN PROTECTION CIRCUIT IN2 NF2 30kΩ GND + - + - R12 120Ω + - IN1 NF1 RIPPLE VCC2 B.S.1 100μF SW1C11 100μF CIN 47μF CIN 47μF 100μF C7 0.15μF 1000μF RL OUT - 2 RL 0.15μF OUT - 1 1000μFC4 100μF B.S.2 C10 1000μF VCC1 IN - 1 IN - 2 REMARK: 1.This IC can be used without coupling capacitor (C IN). 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.

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 10 www.unisonic.com.tw QW-R107-013.E  APPLICATION INFORMATION 1. ADJUSTMENT OF VOLTAGE GAIN The voltage gain GV is obtained as follows by R1, R2 and RF in Fig.1. INPUT CNF - + 47μF RF R1 45Ω R2 30kΩ OUTPUT+ AMP R F+ R 1 + R 2 GV=20λog R F+R1 When RF=0Ω G V=56.5dB(typ.) When RF=120Ω G V=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 de struction of IC that abnorma l temperature rise when the heat radiation is insufficient. The operation tem perature 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 INPUT GND - + CIN Q2 Q3 to DRIVER to BIAS 30KΩ NF 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.

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 10 www.unisonic.com.tw QW-R107-013.E  APPLICATION INFORMATION(Cont.) 4. OSCILLATION PREVENTIVE MEASURES For oscillation preventive capacitor C6 and C7 between th e output terminal and GND, pol yester film capacitor is recommended due to good characteristics for temperatur e and for high frequency. It is better that use this capacitor after the temperature test to check the oscillation allowance due to t he characteristics of the capacitor is liable to be influenced by the temperature. Besides, as t he position of the el ectrolytic 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) pi n. 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.

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 7 of 10 www.unisonic.com.tw QW-R107-013.E TYPICAL CHARACTERISTICS RL=4Ω VIN=0 TA=25℃ Supply Voltage, Vcc (V) ICCQ,V2,V10-VCC 80Quiescent Current, ICCQ (mA) 40 81 2 16 20 Gv-f 30 100 1K 10K 100K Frequency, f (Hz) Voltage Gain, GV (dB) 3K 30K VCC=9V RL=4Ω RNF=120Ω TA=25℃ VCC=9V RL=4Ω RNF=120Ω TA=25℃ THD - POUT f=10kHz 100Hz 1kHz Output Power, POUT (W) 0.10.030.01 0.3 10 13 0.5 0.3 0.1 Total Harm oic Distortion, THD (% 0.10.030.01 0.5 0.3 THD - POUT VCC=12V RL=4Ω RNF=120Ω TA=25℃ f=10kHz 100Hz 1kHz 0.3 0.1 1013 Total Harm oic Distortion, THD (% Output Power, POUT (W)

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 8 of 10 www.unisonic.com.tw QW-R107-013.E  TYPICAL CHARACTERISTICS (Cont.) Supply Voltage, VCC2 (V) ICCQ2,V2,V10-VCC2 8 10 12 14 ICCQ2 V2,V10 0 0.10.030.01 0.5 0.3 THD - POUT VCC1=9V RL=4Ω f=1kHz RNF=120Ω TA=25℃ 0.3 0.1 1013 Output Power, POUT (W) 7 9VCC2=5V 6 8

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 9 of 10 www.unisonic.com.tw QW-R107-013.E  TYPICAL CHARACTERISTICS (Cont.) Ambient Temperature, TA (℃) Allowable Power Dissipation, PD (W) PD -TA 0 160 18060 80 100 120 20 140 14 (1) (2) (3) (4) (1) INFNITE HEAT SINK (2) 80cm2 × 2mm AL HEAT SINK (3) 18cm2 × 2mm AL HEAT SINK (4) NO HEAT SINK Output Voltage, POUT (W) Power Dissipation, PD (W) PD -P OUT 0 3 4 5 6 1 7 RL=4Ω f=1kHz VCC=12V 0.5 Ambient Temperature, TA(℃) Total Harmonic Distortion, THD (%) THD - TA 0.2 0.3 0.4 -40 20 40 60 80 0.1 -20 100 VCC=9V RL=4Ω POUT=0.4W f=1KHz Ambient Temperature, TA(℃) Quiescent Current, ICCQ (mA) ICCQ,V2,V10 - TA -40 20 40 60 80 -20 VCC=9V RL=4Ω VIN=0 V2,V10 ICCQ Output Voltage V2,V10 (V) Quiescent Current, ICCQ2 (mA) Output Voltage, V2,V10 (V) Total Harm oic Distortion, THD(%

TA8207K LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 10 of 10 www.unisonic.com.tw QW-R107-013.E  TYPICAL CHARACTERISTICS (Cont.) Allowable Power Dissipation, PD(W) Power Dissipation, PD(W) Total Harmonic Distortion, THD (%) Quiescent Current, ICCQ (mA) Output Voltage, V2,V10 (V) 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.