PAM8402. General Description. Key Features. Applications. Typical Application Vdd. 2 W Class-D Stereo Audio Amplifier with Enable

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2 Key Features THD per Channel Output into a 4Ω oad at V Support Speakers or Earphones(4Ω to 32 Ω) ow THD+N Superior ow Noise without Input Efficiency up to 8 Short Circuit Protection Space Saving Package: SSOP Pb-Free Package Applications General Description The PAM8402 is a 2W per channel, stereo class-d audio amplifier with enable function. It offers low THD+N, allowing it to produce high-quality sound reproduction. The PAM8402 features much higher efficiencies than their class AB cousins, making it ideal for many portable applications. The PAM8402 is available in a SSOP package. Notebook Computers PDAs Portable DVD Players, Game Machines Cellular Phones /Speaker Phones MP3 or PMP Players Portable Speakers,USB Speakers CD Monitors / TVs Typical Application Vdd uf 33uH Speaker Input R 22uF 0k uF 4Ω Enable uH 33uH 47uF Input 22uF 0k 33uH 47uF 47uF Speaker 4Ω

3 Block Diagram Vdd Input Signal Right C 22uF Bit Controller C Filter Right Speaker Enable Over Current Input Signal eft Vdd C2 22uF Bit Controller C Filter eft Speaker uf Over Current 2

4 XATYWW PAM8402 Pin Configuration & Marking Information SSOP X: Internal Code A: Assembly Code T: Testing Code Y: Year WW: Weekly : Internal Code Pin Number Name Function GND Chip Ground 2 IN_R Right Channel Audio Input 3 NC No Connect 4 VDD Power Supply ENR Enable Right 6 EN Enable eft 7 VDD Power Supply 8 NC No Connect 9 IN_ eft Channel Audio Input 0 GND Chip Ground -OUT_ Inverted Output, eft Channel 2 NC No Connect 3 GND Chip Ground 4 NC No Connect +OUT_ Non-inverted Output, eft Channel 6 +OUT_R Non-inverted Output, Right Channel 7 NC No Connect 8 GND Chip Ground 9 NC No Connect -OUT_R Inverted Output, Right Channel 3

5 Absolute Maximum Ratings These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Supply Voltage...6.V Storage Temperature to 0 Operation Temperature Range to 8 Maximum Junction Temperature...0 Operation Junction Temperature to 2 Soldering temperature , sec Recommended Operating Conditions Supply Voltage Range...2.V to 6V Junction Temperature Range to 2 Operation Temperature Range to 8 Thermal Information Parameter Package Symbol Maximum Unit Thermal Resistance (Junction to Ambient) SSOP θ JA 40 /W Electrical Characteristic O T A=2 C, unless otherwise noted. Parameter Symbol Test Condition MIN TYP MAX UNITS Supply Voltage Range V DD 2. 6 V Quiescent Current I Q V DD =V,no load 3 4 ma SW On Resistance R DS(ON) V DD =V,I SW =00mA.4 Ω SW Frequency f SW No Input Signal 600 KHz Total Harmonic Distortion Plus Noise THD+N R =8Ω,Po=W, f=khz R =4Ω,Po=W, f=khz 7 Gain A VD V DD =2.Vto6V 0 V/V V DD =V,R = 4Ω, THD=0 2 W Output Power P O V DD =V,R = 8Ω, THD=0.6 W Signal Noise Ratio SNR V DD =V,P O =.W,R =8Ω 60 db Channel Separation CS V DD =V,f=KHz, R =8Ω 3 db Peak Efficiency η V DD =V, R =8Ω 80 8 Input Impedance R IN 0 KΩ Enable Input High V TH V DD =V. V Enable Input ow V T V DD =V 4 V Standby Current I STD V DD =V,V EN =V ENR =0V 3 ma 4

6 Typical Performance Characteristics O T =2 C, V A 00 DD =V, unless otherwise noted.. THD+N vs Power THD+N vs Power m m 0m 00m 0m W 00m R =4 Ω,f=kHz,Gain=4dB 3.THD+N vs Frequency k 2k k 0k k Hz R =8 Ω, P =W ; Gain=4dB O d B V 0 0m m 0m 00m 0m 00m 2 4 W W R =8 Ω,f=kHz,Gain=4dB Noise Floor k 2k k 0k k Hz R =8 Ω,Gain=4dB Channel separation Frequency Response d B db d B V V k 2k k 0k k k 2k k 0k k Hz Ω R =8 Ω, P O=W,Gain=4dB K 2K K 0K K Hz 00 K 2K K 0K K R =8, P =W Hz O,Gain=4dB K 2K K 0K K

7 Typical Performance Characteristics(continued) Efficiency() Efficiency vs. Output Power 8Ω 4Ω Output Power(W) Quesicent Current(mA) 8. Quiescent Current vs Supply Voltage Supply Voltage(V) Test Setup for Performance Testing AP System One Generator PAM8402 Demo Board Input GND +OUT -OUT VDD oad AP ow Pass Filter AUX-002 AP System One Analyzer Power Supply Notes:. The AP AUX-002 low pass filter is necessary for every class-d amplifier measurement done by AP analyzer. 2. A 33uH inductor is used in series with load resistor to emulate the small speaker for efficiency measurement. 6

8 Ordering Information PAM8402 X X Shipping Package Type Device Package Shipping PAM8402NT SSOP 8 Units/Tube 7

9 Outline Dimension SSOP D E E h*4 h 0 b e R 4* θ θ2 7 (4x) R A2 A A θ 4* θ SYMBOS MIN NOM MAX A A A b D E E e REF R R h θ 0º 4º 8º θ º 0º º θ2 0º - - 8

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

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