UNISONIC TECHNOLOGIES CO., LTD TA8227AP LINEAR INTEGRATED CIRCUIT LOW FREQUENCY POWER AMPLIFIER DESCRIPTION The UTC TA8227AP is an audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON / OFF switch. Thermal shut down protection circuit is built in. FEATURES * Wide operating supply voltage: VCC=5~12V * Low popping noise at power ON * Best for supply voltage 9V * Output power POUT=2.5W/CH at Vcc=9V, RL=4Ω, f=1kHz, THD=10% POUT=3.0W/CH at Vcc=9V, RL=3Ω, f=1kHz, THD=10% * Soft Clip * Built-in thermal shut-down protection circuit * Stand-by switch ORDERING INFORMATION Ordering Number Lead Free Plating Halogen Free TA8227APL-D12-H-T TA8227APG-D12-H-T TA8227APL-S20-R TA8227APG-S20-R TA8227APL-S20-T TA8227APG-S20-T www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd Package Packing DIP-12H SOP-20 SOP-20 Tube Tape Reel Tube 1 of 8 QW-R107-021,D TA8227AP LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION VCC2 1 12 OUT1 2 11 B.S.1 3 10 VCC1 VCC2 1 20 VCC1 OUT2 B.S.2 OUT1 2 19 OUT2 B.S.1 3 18 B.S.2 PW-GND 4 17 PW-GND PW-GND 5 16 PW-GND PW-GND 6 15 PW-GND PW-GND 7 14 PW-GND PRE-GND PRE-GND 4 9 RIPPLE 8 13 RIRPLE NF1 5 8 NF2 NF1 9 12 NF2 6 7 IN2 IN1 10 11 IN2 IN1 FOR DIP-12H UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw FOR SOP-20 2 of 10 QW-R107-021,D TA8227AP BLOCK DIAGRAM + - + - FIN + + - LINEAR INTEGRATED CIRCUIT - UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 10 QW-R107-021,D TA8227AP LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUN RATINGS (Ta=25°C) PARAMETER Supply Voltage Output Current (peak / CH) Power Dissipation Operating Temperature Storage Temperature SYMBOL VCC IO(PEAK) PD TOPR TSTG VALUE 20 2.5 4.0 -25~+75 -55~+150 ELECTRICAL CHARACTERISTICS (Ta=25°C, Vcc=9V, RL=4Ω, Rg=600Ω, f=1kHz, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Quiescent Current ICCQ VIN=0 POUT(1) THD=10% Output Power POUT(2) THD=10%, RL=3Ω Total Harmonic Distortion THD POUT=0.4W/CH Gv1 Rf=120Ω,VOUT=0.775Vrms (0 dBm) Voltage Gain Gv2 Rf=0, VOUT=0.775Vrms (0 dBm) Input Impedance RIN Output Noise Voltage eN Rg=10kΩ,BW=20Hz~20kHz Ripple Rejection Ratio R.R. Rg=600Ω, fripple=100Hz Cross Talk C.T Rg=600Ω,VOUT=0.775Vrms (0 dBm) Input Offset Voltage V6, V7 Standby Current 1stb Sw1:OFF MIN 2.0 43 TYP 21 2.5 3.0 0.2 45 56.5 30 0.3 -52 -50 30 1 MAX 45 UNIT mA W 1.0 47 1.0 60 % dB dB kΩ mVrms dB dB mV μA TYP. DC VOLTAGE OF EACH TERMINAL (Vcc=9V, Ta=25°C ) TERMINAL NO. DC VOLTAGE (V) UNIT V A W °C °C 1 VCC 2 4.5 3 8.7 4 GND 5 0.7 6 0.03 7 0.03 8 0.7 9 5.0 10 8.7 11 4.5 12 VCC APPLICATION INFORMATION AND APPLICATION METHOD 1. Adjustment of voltage gain The voltage gain Gv is obtained as follows by R1, R2 and Rf in Fig.1 GV = 20 log R f + R1 + R 2 R f + R1 When Rf=0Ω Gv=56.5 dB (Typ.) When Rf=120Ω Gv=45 dB (Typ.) By increasing Rf, reduction of Gv is possible. However, since the feedback increase is liable to produce oscillation, it is recommended to use this at 40dB or over. INPUT 6/7 (10/11) Rf + - CNF 47μF ( 5/8 (9/12) R1 45Ω + Ch-2 R2 OUTPUT 2/11 (2/19) 30kΩ ): For SOP-20 Package Fig.1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 10 QW-R107-021,D TA8227AP LINEAR INTEGRATED CIRCUIT APPLICATION INFORMATION AND APPLICATION METHOD(Cont.) 2. Thermal shut-down circuit The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the abnormal temperature rise when the heat radiation is insufficient. The operation temperature is set at radiation Fin temperature 175°C (Typ.) At this temperature or over the bias is interrupted to prevent the destruction of IC. 3. Input stage The input circuit of this IC is as shown in fig.2. PNP Tr : Q1 is provided in the input circuit so as to make its usage possible without the input coupling capacitor. However, at pin 6 and pin 7, max 60mV offset voltage is produced. Application after checking volume slide noise is recommended. For cutting the volume slide noise, insert the input capacitor: CIN in series to interrupt the DC component. Q2 Q3 + INPUT - CIN 6/7 (10/11) 4 (8) OUTPUT 30kΩ 2/11 (2/19) To DRIVER Q1 45kΩ 30kΩ Pre-GND 5/8 (9/12) Rf + ( ): For SOP-20 Package - 47μF 4. Oscillation preventive measures For oscillation preventive capacitor C6 and C7 between the output terminal and GND, it is recommended to use polyester film capacitor having good characteristics for temperature and for high frequency. Since the characteristics of the capacitor is liable to be influenced by the temperature, use this capacitor after the temperature test to check the oscillation allowance. In addition, as the position of the electrolytic capacitor has a remarkable influence on the oscillation, connect C10 to Vcc at the nearest possible position from power GND. At using this application wth 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 Pin1. However, output power is changed by Pin1 supply voltage when Pin1 supply voltage is not same Pin12 supply voltage, after referring to attached date, select Pin1 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. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 10 QW-R107-021,D TA8227AP LINEAR INTEGRATED CIRCUIT TEST CIRCUIT + - + FIN + - + - Note 1: This IC can be used without coupling capacitor (CIN). If volume slide noise noise occurred by input offset voltage is undesirable, it needs to use the capacitor (CIN). Note 2: The condenser between the pin4 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 6 of 10 QW-R107-021,D TA8227AP TYPICAL CHARACTERISTICS ICCQ2, V2, V11 – VCC2 10 ICCQ 8 8 6 6 5 3 6V 7V 8V 3 Supply Voltage, VCC2 (V) 0.1 0.3 1 Output Power, POUT (W) THD – Ta ICCQ2, V2, V11 – VCC2 4 2 2 0 2 4 6 8 10 12 14 0 0.5 0.4 0.3 0.2 0.1 0 -20 0 20 40 60 80 1 0.5 0.3 0.1 0.01 Quiescent Current, ICCQ (mA) Total Harmonic Distortion, THD (%) 10 VCC1=9V RL=4Ω F=1kHz RNF=120Ω Ta=25°C 9V V2, V11 -40 30 VCC2=5V 4 0 Quiescent Current, V2, V11 (V) Quiescent Current, ICCQ2 (mA) 12 VCC1=12V 10 VIN=0 Ta=25°C Total Harmonic Distortion, THD (%) THD – POUT 12 0.03 10 50 40 30 V2, V11 20 ICCQ 10 0 100 Ambient Temperature, Ta (°C) -40 -20 0 20 40 60 80 Ambient Temperature, Ta (°C) ICCQ2, VOUT – VCC 80 Quiescent Current, ICCQ (mA) LINEAR INTEGRATED CIRCUIT 60 40 VOUT 20 0 ICCQ 0 5 10 15 20 Supply Voltage, VCC2 (V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 10 QW-R107-021,D TA8227AP LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS(Cont.) THD – POUT THD – POUT Total Harmonic Distortion, THD (%) Total Harmonic Distortion, THD (%) 100 VCC=9V RL=4Ω RNF=120Ω 30 10 3 f=10kHz 1 1kHz 0.3 100Hz 0.1 0.01 0.1 0.3 1 3 10 100 30 f=1kHz RL=4Ω RNF=120Ω 10 3 VCC=6V 9V 1 0.3 0.1 0.01 30 0.1 Output Power, POUT (W) 3 10 C.T. - f 0 VCC=9V RL=4Ω RNF=120Ω Cross Talk C.T. (dB) Voltage Gain, GV (dB) 60 1 Output Power, POUT (W) GV - f 80 0.3 40 20 -20 VCC=9V RL=4Ω Rg=600Ω RNF=120Ω VOUT=0.775Vrms (0dBm) -40 -60 -80 0 30 100 1k 10k Frequency, f (Hz) 100k 30 100 1k 10k Frequency, f (Hz) 100k Ripple Rejection Ratio, R.R. (dB) R.R. - Rg 0 -20 VCC=9V RL=4Ω RNF=120Ω f=100Hz -40 -60 -80 30 100 1k 10k 100k Signal Source Resistance Rg (Ω) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 10 QW-R107-021,D TA8227AP LINEAR INTEGRATED CIRCUIT Cross Talk C.T. (dB) Output Noise Voltage Vno (mVrms) TYPICAL CHARACTERISTICS(Cont.) VCC - Pout PD - Pout f = 1kHz THD = 10% 5 4 8Ω 3 2 4Ω 1 0 0 5 7 9 11 13 15 VCC = 12V 5 RL = 6Ω 17 19 RL = 4Ω f = 1kHz 4 3 9V 2 1 0 0 1 2 3 4 5 6 7 Output Power Pout (W) Power Dissipation PD (W) Supply Voltage VCC (V) Power Dissipation PD (W) Output Power Pout (W) 6 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9 of 10 QW-R107-021,D TA8227AP 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 10 of 10 QW-R107-021,D