UNISONIC TECHNOLOGIES CO., TBA820M LINEAR INTEGRATED CIRCUIT 1.2W AUDIO POWER AMPLIFIER DESCRIPTION SOP-8 The UTC TBA820M is a monolithic integrated audio amplifier. It is designed for audio frequency class b amplifier. FEATURES *Wide operating supply voltage: Vcc=3~14V *Medium output power POUT=1.2W at Vcc=9V,RL=8Ω, THD=10% *Low quiescent circuit current: IQ=4mA(type) *Good ripple rejection. *Minimum number of external parts required. DIP-8 *Pb-free plating product number: TBA820ML ORDERING INFORMATION Order Number Normal Lead Free Plating TBA820M-S08-R TBA820ML-S08-R TBA820M-S08-T TBA820ML-S08-T TBA820M-D08-T TBA820ML-D08-T Package Packing SOP-8 SOP-8 DIP-8 Tape Reel Tube Tube BLOCK DIAGRAM Ripple Bootstrap Vcc Output 8 7 6 5 1 2 3 4 CB NF Input GND www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., 1 QW-R107-008.C TBA820M LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta =25°C) PARAMETER SYMBOL RATINGS UNIT Supply Voltage Vcc 16 V Output Peak Current IO(peak) 1.5 A Power Dissipation PD 1.25 W Operating Temperature TOPR -20 ~ +85 °C Storage Temperature TSTG -40 ~ +150 °C Note:1. Absolute maximum ratings are stress ratings only and functional device operation is not implied. The device could be damaged beyond Absolute maximum ratings. 2. The device is guaranteed to meet performance specifications within 0℃~70℃ operating temperature range and assured by design from –20℃~85℃. ELECTRICAL CHARACTERISTICS (Ta=25°C, Vcc=9V, F=1KHZ, RG=600Ω, RF=120Ω, RL=8Ω, unless otherwise specified. PARAMETER Quiescent Current Output Power Total Harmonic Distortion Open Loop Voltage Gain Closed Loop Voltage Gain Input Resistance Output Noise Voltage SYMBOL IQ POUT THD Gvo Gvc RIN eN TEST CONDITIONS VIN=0 Vcc=9V,RL=4Ω,THD=10% Vcc=9V,RL=8Ω,THD=10% Vcc=6V,RL=4Ω,THD=10% Vcc=6V,RL=8Ω,THD=10% Vcc=12V,RL=8Ω,THD=10% POUT=500mW RF=0 RF=120Ω RG=10kΩ, BW(-3dB)=50~20kHz UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 0.9 0.4 33 TYP 4 1.6 1.2 0.75 0.5 2 0.3 75 36 5 0.3 MAX 12 UNIT mA W 1 39 1 % dB dB MΩ mV 2 QW-R107-008.C TBA820M LINEAR INTEGRATED CIRCUIT TEST CIRCUIT VCC R3 56 100 F/16V INPUT 6 3 CB(Bootstrap Cap) 7 2 4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUTPUT 5 220 F/15V 8 R2 1 RF 120 100 F/10V 100 F/15V 1 UTC TBA820M R1 10K 0.1 F RL 4 0.1 F 47 F/10V 3 QW-R107-008.C TBA820M TYPICAL CHARACTERISTICS Fig 2 Output power vs Supply Voltage Fig 1 Quienscent circuit current vs Supply Voltage 2.0 VIN=0 RL=8 1.6 Output Power(W) Quiescent Current(mA) 8 4 RL=4 0.8 THD=10% f=1kHz RF=120 0.4 0 0 4 8 12 16 20 0 4 8 Supply Voltage(V) 12 16 20 Supply Voltage(V) Fig 3 Total harmonic Distortion vs Output power Vcc=9V RL=8 16 RF=120 f=1kHz Fig 4 Voltage Gain vs Feedback resistance Closed loop Voltage Gain(dB) Total harmonic Distortion ( %) RL=16 1.2 0 12 8 4 0 Vcc=9V RL=8 f=1kHz 80 60 40 20 0 0 0.4 0.8 1.2 1.6 0 Output Power(W) 50 100 150 Feedback Resistance( ) Fig 5 Power Dissipation vs Output power Fig 6 Power Dissipation vs Supply Voltage 1.0 0.25 Vcc=9V RL=8 f=1kHz 0 Power Dissipation(W) 0.5 Power Dissipation(W) LINEAR INTEGRATED CIRCUIT RL=8 RL=4 RL=16 0.5 0 0 0.4 0.8 1.2 1.6 2.0 Output Power(W) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 0 4 8 12 16 20 Supply Voltage(V) 4 QW-R107-008.C TBA820M Total Harminoc distortion(%) TYPICAL CHARACTERISTICS(CONT.) Response(dB) 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 5 QW-R107-008.C