TEA2025-D16-T

TEA2025_10 UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO.,LTD. TEA2025 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 Copyright © 2005 Unisonic Technologies Co.,LTD. QW-R107-033.B STEREO AUDIO AMPLIFIER „ DESCRIPTION The UTC TEA2025 is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package. It is designed for portable cassette players and radios. „ FEATURES *Working Voltage down to 3V *Few External components *High Channel isolation *Voltage gain up to 45dB(Adjustable with external resistor) *Soft clipping *Internal Thermal protection DIP-16 *Pb-free plating product number: TEA2025L „ ORDERING INFORMATION Order Number Normal Lead Free Plating Package Packing TEA2025-D16-T TEA2025L-D16-T DIP-16 Tube „ PIN CONFIGURATION +Vs OUT.1 BOOT.1 GND GND FEEDBACK IN.1 (+) GND (sub)SVR IN.2 (+) FEEDBACK GND GND BOOT.2 OUT.2 BRIDGE

TEA2025 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 www.unisonic.com.tw Q W - R 1 0 7 - 0 3 3 . B „ BLOCK DIAGRAM 9 10 11 12 13 14 15 2356 4 THERMAL PROTECTION START CIRCUIT DECOUPLING 10kΩ 10kΩ 50Ω 50Ω 50Ω 5kΩ

TEA2025 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 www.unisonic.com.tw Q W - R 1 0 7 - 0 3 3 . B „ ABSOLUTE MAXIMUM RATINGS (Ta = 25℃) PARAMETER SYMBOL RATINGS UNIT Supply Voltage V SS 15 V Peak Output Current I O (peak) 1.5 A Junction Temperature T J 150 °C Operating Temperature T OPR -20 ~ +85 ℃ Storage Temperature T STG -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 –20℃~85℃. „ ELECTRICAL CHARACTERISTICS (Ta=25℃, VCC=9V, Stereo, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Voltage V SS 3 12 V Quiescent Current I Q 40 50 mA Quiescent Output Voltage V OUT 4.5 V Stereo 43 45 47 dBVoltage Gain G V Bridge 49 51 53 Voltage Gain Difference ΔGV +-1 dB Input Impedance R IN 30 k Ω RL=4Ω 1.7 2.3 RL=8Ω f=1kHz,THD=10%, VCC=9V Stereo per channel 1.3 RL=4Ω 0.7 1 RL=8Ω VCC=6V 0.6 RL=4Ω V CC=3V 0.1 RL=8Ω Bridge, V CC=9V 4.7 Output Power RL=4Ω POUT VCC=6V 2.8 W Stereo V CC=9V, RL=4Ω, f=1kHz,POUT=250mW 0.3 1.5 Total Harmonic Distortion Bridge THD 0.5 % Supply Voltage Rejection SVR RG=0,AV=45Db,VRIPPLE=150mV FRIPPLE=100Hz 40 46 dB RG=0 1.5 3 Input Noise Voltage RG=10kΩ Vn A V=200, Bandwidth:20Hz ~ 20kHz 3 6 μV Cross-Talk C.T. R G=10kΩ, f=1kHz,RL=4Ω, POUT=1W 40 55 dB „ THERMAL CHARACTERISTICS PARAMETER SYMBOL RATINGS UNIT Thermal Resistance Junction to ambient θJA 60 Thermal Resistance Junction to case θJC 15 ℃/W

TEA2025 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 www.unisonic.com.tw Q W - R 1 0 7 - 0 3 3 . B „ APPLICATION INFORMATION Input Capacitor Input capacitor is PNP type allowing source to be referenced to ground. In this way no input coupling capacitor is required. However, a series capacitor (0.22 uF)to the input side can be useful in case of noise due to variable resistor contact. Bootstrap The bootstrap connection allows to increase the output swing. The suggested value for the bootstrap capacitors (100uF) avoids a reduction of the output signal also at low frequencies and low supply voltages. Voltage Gain Adjust STEREO MODE （Figure 1） The voltage gain is determined by on-chip resistors R1 and R2 together with the external RfC1 series connected between pin 6 (11) and ground. The frequency response is given approximated by: VOUT VIN = R1 Rf + R2 + 1 JWC1 With Rf=0, C1=100μF, the gain results 46 dB with pole at f=32 Hz. THE purpose of Rf is to reduce the gain. It is recommended to not reduce it under 36 dB. Rf 6 (11) R2 2 (15) Figure 1 BRIDGE MODE (Figure 2) The bridge configuration is realized very easily thanks to an internal voltage divider which provides (at pin 1) the CH 1 output signal after reduction. It is enough to connect pin 6 (inverting input of CH 2) with a capacitor to pin 1 and to connect to ground the pin 7. The total gain of the bridge is given by: and with the suggested values (C1 = C2 = 100 uF, Rf = 0) means: Gv = 52 dB with first pole at f = 32 Hz

TEA2025 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 www.unisonic.com.tw Q W - R 1 0 7 - 0 3 3 . B „ TYPICAL APPLICATION CIRCUIT 1610 8 4,5,9,12,13 100 F 0.15 F 100 F 0.15 F RL 100 F 100 F 100 F 0.22 F 100 F Vin Vcc 1610 8 4,5,9,12,13 100 F 0.15 F 470 F 100 F 100 F 0.22 F 100 F Vin Vcc 100 F 0.22 F Vin 2 470 F 0.15 F 100 F OUT1 OUT2 RL RL Fig. 4 Bridge Application Fig.5 Stereo Application „ SCHEMATIC DIAGRAM

TEA2025 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 7 www.unisonic.com.tw Q W - R 1 0 7 - 0 3 3 . B „ TYPICAL CHARACTERISTICS 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.