AF8403. Filterless 3W Class-D Stereo Audio Amplifier 1 / 5. Features. Applications. General Description AF-V3.0. Analog Future. Package Information

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1 Filterless 3 Class-D Stereo Audio Amplifier Features 3 Output at 10% THD with a 4 Load and 5V Power Supply Filterless, Low Quiescent Current and Low EMI Low THD+N Superior Low Noise Efficiency up to 90% Short Circuit Protection Thermal Shutdown Few External Components to Save the Space and Cost Pb-Free Package General Description The AF8403 is a 3, class-d audio amplifier. It offers low THD+N, allowing it to achieve high quality sound reproduction. The new filterless architecture allows the device to drive the speaker, requiring no low-pass output filters, thus to save the and PCB area. ith the same numbers of external components, the efficiency of the AF8403 is much better than that of class-ab cousins. The AF8403 is available in a SOP-16 package. Applications LCD Monitors / TV Projectors Notebook Computers Portable Speakers Portable DVD Players, Game Machines Cellular Phones/Speaker Phones Package Information 1 / 5

2 PIN CONFIGURATION PIN ASSIGNMENT Pin Number Pin Name Description 1 +OUT_L Left Channel Positive Output 2 PGND Power GND 3 -OUT_L Left Channel Negative Output 4 PVDD Power VDD MUTE Mute Control Input(active low) 6 VDD Analog VDD 7 INL Left Channel Input 8 VREF Internal analog reference, connect a bypass capacitor from VREF to GND 9 NC No connect 10 INR Right Channel Input 11 GND Analog GND SHDN Shutdown Control Input(active low) 13 PVDD Power VDD 14 +OUT_R Right Channel Negative Output 15 PGND Power GND 16 -OUT_R Right Channel Positive Output Functional Block Diagram 2 / 5

3 Typical Application Absolute Maximum A = 25 C unless otherwise noted Supply Voltage...6.0V Operation Junction Temperature to 125 Operation Temperature Range to 85 Storage Temperature to 150 Maximum Junction Temperature Soldering Temperature ,5sec Electrical Characteristics (V =5V Gain=24dB, R =8Ω, T =25, unless otherwise noted.) Symbol Parameter Test Conditions MIN TYP MAX UNIT VIN Supply Power VDD=5.0V 2.84 THD+N=10%,, RL=4 Ω THD+N=1%,, RL=4 Ω VDD=3.6V 1.46 VDD=3.0V 1.02 VDD=5.0V 2.24 VDD=3.6V 1.13 Po Output Power VDD=3.0V 0.74 VDD=5.0V 1.69 THD+N=10%,, RL=8 Ω THD+N=1%,, RL=8 Ω VDD=3.6V 0.87 VDD=3.0V 0.56 VDD=5.0V 1.33 VDD=3.6V 0.68 VDD=3.0V 0.44 THD+N Total Harmonic Distortion Plus Noise VDD=5.0V,Po=0.5,RL=8 Ω 0.16 VDD=3.6V,Po=0.5,RL=8 Ω 0.18 VDD=5.0V,Po=1,RL=4 Ω 0.19 VDD=3.6V,Po=1,RL=4 Ω 0.30 % % Gv Gain 20 db PSRR Power Supply Ripple VDD=5.0V, Inputs ac-grounded with f=100hz -59 db 3 / 5

4 Rejection CIN=0.47μF -58 Cs Crosstalk VDD=5V,Po=0.5,RL=Ω,Gv=20dB F=1kHz -95 db SNR Signal-to-noise ratio VDD=5V, Vorms=1V,Gv=20dB 73 db Vn Output noise VDD=5V, Inputs ac-grounded with A-weighting 166 CIN=0.47μF No A-weighting 225 μv Dyn Dynamic range VDD=5.0V, THD=1% 83 db η Efficiency RL=8Ω, THD=10% 84.5 % RL=4Ω, THD=10% 75 VDD=5.0V 17 IQ Quiescent Current VDD=3.6V No load 8 ma VDD=3.0V 6 IMUTE Muting Current VDD=5.0V VMUTE=0.3V 3.5 ma ISD Shutdown Current VDD=2.5V to 5.5V Vsd=0.3V <1 μa Rdson Static Drain-to-source On-state Resistor IDS=500mA,Vgs=5V PMOS 180 NMOS 180 mω fsw Switching Frequency VDD=3V to 5V 287 khz Vos Output Offset Voltage Vin=0V, VDD=5V 10 mv VIH Enable Input High Voltage VDD=5.0V VIL Enable Input Low Voltage VDD=5.0V VIH MUTE Input High Voltage VDD=5.0V VIL MUTE Input Low Voltage VDD=5.0V V V OTP OTH Over Temperature Protection Over Temperature Hysterisis No Load, Junction Temperature VDD=5V Typical Performance Characteristics 1 THD+N vs Output Power 2 THD+N vs Output Power RL=4Ω,Gain=20dB, RL=8Ω,Gain=20dB, 4 / 5

5 3 THD+N vs Frequency 4 THD+N vs Frequency Vdd=5V,RL=4Ω,Gain=20dB,Cin=0.47uF 5 Frequency response Vdd=5V,RL=8Ω,Gain=20dB,Cin=0.47uF Vdd=5V,RL=8Ω,Gain=20dB,Cin=0.47uF DISCLAIMER ANALOG FUTURE COMPANY RESERVES THE RIGHT TO MAKE CHANGES ITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. ANALOG FUTURE DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICIENCE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THE GRAPHS PROVIDED IN THIS DOCUMENT ARE A STATISTICAL SUMMARY BASED ON A LIMITED NUMBER OF SAMPLES AND ARE PROVIDE FOR INFORMATIONAL PURPOSE ONLY. THE PERFORMANCE CHARACTERISTICS LISTED IN THEM ARE NOT TESTED OR GUARANTEED. IN SOME GRAPHS, THE DATA PRESENTED MAY BE OUTSIDE THE SPECIFIED OPERATING RANGE (E.G,. OUTSIDE SPECIFIED POER SUPPLY RANGE ) AND THEREFORE OUTSIDE THE ARRANTED RANGE. 5 / 5