Dual 2.2W Audio Power Amplifier Plus Stereo

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Tobias Phillips
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1 HWD4863 Dual 2.2W Audio Power Amplifier Plus Stereo Headphone Function General Description --- HWD4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4Ω load or 2.5W to a 3Ωload with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. --- HWD4863 is designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design,it combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip --- HWD4863 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce clicks and pops during device turn-on. Key Specifications P O at 1% THD+N into 3Ω into 4Ω into 8Ω Single-ended mode - THD+N at 85mW into 32Ω Shutdown current Supply voltage range 2.5W (typ) 2.2W (typ) 1.1W (typ) 1.0% (typ) 0.7 ua(typ) 2.0V~5.5V Features Stereo switchable bridged/single-ended power Unity-gain stable Stereo headphone amplifier mode Click and pop suppression circuitry Thermal shutdown protection circuitry Applications Portable and Desktop Computers Multimedia Monitors Portable Radios, PDAs, and Portable TVs Rev1.0-1-

2 Operating Ratings Temperature Range Supply Voltage -40 ~85 2.7V V DD 5.5V Typical Application Connection Diagram (TSSOP-20) Rev1.0-2-

3 Absolute Maximum Ratings Supply Voltage 6.0V Storage Temperature -65 ~+150 Input Voltage -0.3V ~V DD +0.3V Power Dissipation Internally limited ESD Susceptibility(Human body model) 2000V ESD Susceptibility(Machine model) 200V Junction Temperature 150 Electrical Characteristics(V DD =5V) For Entire IC Unless otherwise specified. Limits apply for T A =25 C V DD Supply Voltage V I DD Quiescent Power V IN =0V,I O =0A,HP-IN=0V ma Supply Current V IN =0V,I O =0A,HP-IN=4V 5.8 I SD Shutdown Current V SHUTDOWN =V DD ua V IH V IL Headphone Sense 4 V High Input Voltage Headphone Sense 0.8 V Low Input Voltage Electrical Characteristics(V DD =5V) For Bridged Mode Operation Unless otherwise specified. Limits apply for T A =25 C V OS P O THD+N Output Offset Voltage Output Power Total Harmonic Distortion+Noise V IN =0V,no load 5 50 mv R L =3Ω 2.5 W R L =4Ω 2.2 W W 20Hz<f<20kHz,A VD =2 R L =4Ω,P O =2W R L =4Ω,P O =2W %,P O =1W Rev1.0-3-

4 PSRR Power Supply C B =1.0uF,, Rejection Ratio V RIPPLE =200mV RMS ; 67 db SNR Signal to Noise Ratio V DD =5V,P OUT =1.1W, 98 db X talk Channel Separation f=1khz,c B =1.0uF 92 db Electrical Characteristics(V DD =5V) For Single-Ended Mode Operation Unless otherwise specified. Limits apply for T A =25 C V OS Output Power V IN =0V, 无负载 5 50 mv THD+N=0.5%;f=1kHz; R L =32Ω 85 mw P O THD+N PSRR SNR Output Power 340 mw THD+N=10%;f=1kHz; 0.45 W Total Harmonic 20Hz<f<20kHz,A VD =-1 Distortion+Noise R L =32Ω,P O =75mW 0.2 % Power Supply C B =1.0uF,f=1kHz, Rejection Ratio V RIPPLE =200mV RMS ; 52 db Signal to Noise V DD =5V,P OUT =0.35W, Ratio 95 db X talk Channel Separation f=1khz,c B =1.0uF 60 db External Components Description Components 1 R IN 2 C IN Functional Description Inverting input resistance that sets the closed-loop gain in conjunction with R f. This resistor also forms a high pass filter with C i at f C =1/(2π RiCi). Input coupling capacitor that blocks the DC voltage at the amplifiers input terminals. Also creates a highpass filter with Ri at fc = 1/(2π RiCi). 3 R f Feedback resistance that sets the closed-loop gain in conjunction with Ri. 4 C S Supply bypass capacitor that provides power supply filtering. 5 C BYPASS Bypass pin capacitor that provides half-supply filtering. Rev1.0-4-

5 Physical Dimensions <TSSOP>: DIMENSIONS ARE IN MILLIMETERS <TSSOP-20>Top View <TSSOP-20>Side View1 <TSSOP-20>Side View2 Rev1.0-5-

6 <TSSOP-20>Bottom View Symbol Dimensions In Millimeters Min.(mm) Max.(mm) A A A TYP. B B C C TYP. C C D 1.0 TYP. D R1 R2 θ 1 θ TYP TYP. 12 o TYP. 12 o TYP. θ 3 0º 8º θ 4 10º TYP. Rev1.0-6-

7 OPTION PAD SIZE(mm) SYMBOL DIMENSION(mm) MARK 1 3 X 4.2 Y MIN MAX MIN MAX NORMAL X 3.15 Y MIN MAX MIN MAX SPECIAL CUSTOMER 20-Lead Molded TSSOP, Exposed Pad, mm Order Number HWD4863MTE Rev1.0-7-

SGM4863 Dual 2.1W Audio Power Amplifier Plus Stereo Headphone Function

SGM4863 Dual 2.1W Audio Power Amplifier Plus Stereo Headphone Function Dual.W Audio Power Amplifier GENERAL DESCRIPTION The SGM4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver.w into a 4Ω load or.5w into a 3Ω load with