特殊应用音频
音频子系统 Audio Subsystems
音频放大器
Boomer音频放大器 Boomer Audio Amplifiers
D类放大器 Class D
耳机放大器 Headphone
高功率Overture放大器 High-Power Overture Amplifiers
麦克风 Microphone
高性能音频 Performance Audio
音频子系统 Audio Subsystems (39)
Base Part Number Power@ 4Ohms, 10% THD Power@ 4Ohms, 1% THD Power@ 8Ohms, 10% THD Power@ 8Ohms, 1% THD THD PSRR SNR Channels THD Conditions PSRR Conditions SNR Conditions User Supply Audio Mux Capless Headphone ClassD Driver Interface Stereo Inputs National 3D Digital Volume Control Max Digital Volume Control Min Output Modes Supply Range Mono Inputs Temperature Min Temperature Max Loudspeaker Type Headphone Type AEC Q-100 Automotive Grade Automotive Selection Guide Loudspeaker Outputs PowerWise A/D Channels D/A Channels
LM4844 Undefined Undefined 1.5 1.2 0.05 71 Undefined 4 Speaker, Po=400mW, f=1kHz f=217Hz, Speaker Mode (Modes 2,3,7,8) 5 Yes Yes No I2C 1 Yes 6 -40.5 16 +2.7 - +5.5 V 1 -65 150 Class AB Virtual Ground   2      
LM4845 Undefined Undefined 0.7 0.5 0.5 88 Undefined 3 f=20Hz-20kHz,Pout=250mW,Rl=8phm,BTL,mode 1 Vrpi=200mVpp,f=217Hz,Cb=2.2uF,SE,Co=100uF All inputs terminated 3.3 Yes Yes No I2C,SPI 1 Yes 18 -54 8 +2.7 - +5.5 V 1 -40 85 Class AB Virtual Ground   1      
LM4846 Undefined Undefined 0.65 0.5 0.5 88 Undefined 2 f=20Hz to 20kHz,Pout=250mW,Rl=8ohm,BTL,Mode1 Vrip=200mVpp,f=217Hz,Cb=2.2uf,SE,Co=100uF 3.3 No Yes No I2C,SPI 1 Yes 18 -54 8 +2.2 - +5.5 V 1 -40 85 Class AB Virtual Ground   1      
LM4852 Undefined 1.5 Undefined 1.1 1 64 Undefined 3 1kHz, 1.1W 8ohm BTL 5V Vdd ,SPKR out Undefined 5 Yes No No I2C 1 No 6 -40.5 8 +2.5 - +5.5 V 1 -65 150 Class AB Cap Coupled   1      
LM4855 Undefined Undefined 1.4 1.1 0.5 57 100 3 Pout=.4W @ Vs=5V, RL=8 Ohms, 20Hz-20kHz 217 Hz, terminated into 50 Ohms Undefined 5 Yes No No SPI 1 No 6 -40.5 8 +2.6 - +5 V 2 -40 85 Class AB Cap Coupled | null | null 1      
LM4856 Undefined 1.5 Undefined 1.1 0.5 58 Undefined 4 20Hz to20kHz. SPKRout RL=8ohms Vrip=200mV; f=217Hz; CB= 1.0uF Undefined 5 Yes No No I2C 1 No 12 -34.5 8 +1.4 - +3.6 V 2 -65 150 Class AB Cap Coupled   1      
LM4857 Undefined Undefined 1.5 1.2 0.05 70 Undefined 6 Speaker; Po=400mW, 8Ohm BTL Speaker; Mode 2,3,7,8; Audio inputs terminated 5 Yes No No I2C 1 Yes 6 -40.5 16 +2.7 - +5.5 V 1 -40 85 Class AB Cap Coupled   2      
LM4859 Undefined 1.6 Undefined 1.2 0.05 70 Undefined 6 Spk Po 400mW, f-1khz, 8ohm BTL f=217Hz, 5V, Vr=200mV Spk 5 Yes No No I2C 1 Yes 6 -40.5 16 +2.7 - +5.5 V 1 -40 85 Class AB Cap Coupled   2      
LM4867 Undefined| 2.6 Undefined| 1.9 1.5 1.1 0.3 67 97 2 Po=1W @ Vs=5V, R=8 Ohms| Po=2W @ Vs=5V, R=4 Ohms Vdd=5V, RL=8 Ohms RL=8 Ohms, Po=1.1W 5 Yes                 +2.0 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM49100 Undefined Undefined 0.525 0.425 0.2 90 Undefined 3 Headphone mode 4, f=1kHz, RL=32ohm, Pout=25mW LS, Modes 1, 2, 10 Undefined 3.6   No No I2C 2   18 -54 10 +2.7 - +5.5 V 2 -40 85 Class AB True Ground Undefined Undefined 2   Undefined Undefined
LM49120 Undefined Undefined Undefined 0.54 0.015 83   3 f=1kHz, Pout = 12mW, RL=32ohms, SE or OCL HP out, mode 4 Vripple = 200mVpp, fripple=217Hz, RL=32ohms, Cb=2.2uF 3.3 Yes Yes No I2C 1 No 18 -86 24 +1.4 - +3.6 V 1 -40 85 Class AB Virtual Ground 0 No 1 Undefined Undefined Undefined
LM49150 Undefined 0.845 Undefined 2.1 0.01 91 101 3 VDD=5V, HP Pout = 20mW, RL=32ohms Vripple = 200mVpp, f=217Hz, RL = 32ohms, CB=2.2uF, HP Attenuation = 0dB HP mode 4, A-weighted, Output referred 5 Yes Yes Yes I2C Single Ended No 18 -80 16 +2.7 - +5.5 V Differential -40 85 Class D True Ground 0 Undefined Undefined Undefined Undefined Undefined
LM4930 Undefined Undefined 1.5 1.1 0.07 55 86 4 Headphone total THD: Pout=7.5mW; 32Ohms stereo 217Hz, 10 Ohms terminated to GND For music mode @ 1%THD,32Ohm stereo 5 Yes No No I2C I2S No Undefined -46.5 11 +2.6 - +5 V PCM -30 85 Class AB Cap Coupled   1   1 3
LM4931 Undefined Undefined Undefined 1.1 0.4 50 86 3 fout=1kHz, Pout=100mW Cb=1.0uF,vripple=200mVp-p,fripple=217Hz fmclk=12.288MHz, PLL disabled 3 Yes No Yes I2C,SPI I2S No Undefined -46.5 11 +2.7 - +5.5 V PCM -40 85 Class D Virtual Ground   1   1 2
LM49321 Undefined Undefined Undefined 0.52 0.01 76 85 2 Headphone; Po =10mW;f=1kHz;32R SE Mode 2 LS.  AVDD = 3.0; frip=217Hz; Vrip =200mVp-p;Cb=2.2uF. All gains =0dB Gains set to 0dB 5 Yes Yes No I2C SPI I2S 1 No 5 56 7 +2.7 - +5.5 V 1 -40 85 Class AB Virtual Ground Undefined No 1 No 0 2
LM4935 Undefined Undefined 0.6 0.4 54 76 4 8ohms, Pout=400mW Aux inputs terminated, CB=1uF, Vripple=200mVpp, fripple=217Hz From 0dB Analog Aux input at 1kHz, A-weighted 3.3 Yes No Yes I2C, SPI, I2S 1 analog + I2S No 12 -45.6 1000 +2.7 - +5.5 V 1 analog + I2S -40 85 Class D Virtual Ground   3   2 2
LM49350 Undefined 0.8 Undefined 0.495 0.025 97 106 4 HP Out, Pout=7.5mW, PL=32ohms, Stereo analog in HP Out, Vripple=200mVpp, f=217Hz, Stereo analog in terminated, Vref=1uF, mono diff. in Ref = Vout (1% THD+N), Gain = 0dB, A-weighted, Stereo Inputs Terminated 3.3 Yes Yes Yes I2S and PCM 2 Yes 36 -46.5   +2.7 - +5.5 V 2 -40 85 Class D True Ground 0 No 1 No 2 2
LM4937 Undefined Undefined Undefined 0.42 0.04 68 85 4 SPKRout; Po=200mW; f=1kHz; 8ohm BTL SPKR; Av=0; f=217Hz; Vrip=200mVp-p Av=0 5 Yes Yes No I2C SPI I2S No 5 -56 7 +1.4 - +3.6 V 2 -40 85 Class AB Virtual Ground   1     2
LM49370 Undefined Undefined Undefined 1.2 0.04 70 90   8ohm; Vdd=3.3; Po=400mW Vrip=200mVp-p; f=217Hz 5 Yes Yes Yes I2C I2S SPI PCM I2S Yes 12 -46.5   +2.0 - +5.5 V PCM -40 85 Class D Virtual Ground   3 Yes 1 2
LM4946 Undefined Undefined 0.68 0.58 0.05 76 Undefined 3 f=1kHz, Pout = 250mW, Mode 1 Vripple = 200mVpp, f=217Hz, Cb=2.2uF Undefined 3.3 Yes Yes No I2C,SPI 2 Yes 18 -54 8 +2.7 - +5.5 V 1 -40 85 Class AB Virtual Ground   1      
LM4947 Undefined Undefined 0.62 0.5 0.03 79 Undefined 3 f=1kHz, Pout = 250mW, Mode 1 Vripple=200mVpp, f=217Hz, Cb = 2.2 uF, Mode 1 Undefined 3.3 Yes Yes Yes I2C 1,2 Yes 18 -59.5 8 +2.7 - +5.5 V 1 -40 85 Class D Virtual Ground   1      
LM4936 2.8 2 1.6 1.25 0.06 55 - 2 Po=.4W,f=1kHz,Rl=8ohm Cb=1uF,f=120Hz,Input Terminated,Vrip=200mVrms,R=8ohm 5 No                 +2.7 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM4863 2.7 2.2 1.5 1.1 0.3 67 98 2 Po=2W @ Vs=5V, R=4 ohms, 20Hz-20kHz| Po=1W @ Vs=5V, R=8 ohms, 20Hz-20kHz - Pout=1.1W 5 Yes                 +2.0 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM4873 2.6 2.1| 1.9 1.5 1.1 0.3 67 97 2 Po=1W@5V, 8 ohms, 20-20kHz| Po=2W@5V, 4 ohms, 20-20kHz - - 5 Yes                 +2.0 - +5.5 V -40 85 Class AB True Ground 0   2      
LM4835 2.5 2 1.5 1.1 0.3 74 93 2 Po=1W @Vs=5V, 20Hz-20kHz 120 Hz Pout=1.1W 5 No                 +2.7 - +5.5 V -40 85 Class AB Cap Coupled 0   2      
LM4888 2.5 2.1 1.7 1.3 0.06 85 Undefined 2 IkHz, Avd=2;Rl=8ohm; Ro=.4W 217Hz; Vrip = 200mVp-p; Rl=8ohm Undefined 5 No No No   1 Yes Undefined Undefined 2 +2.7 - +5.5 V 0 -65 150 Class AB Cap Coupled   2      
LM49450 2.5 1.9 1.54 1.25 0.06   92 2 Vdd= 3.6V, Po=300mW Vdd=3.6V, Po=500mW, f=1kHz, Aweighter I2S Single Ended Yes       +2.7 - +5.5 V -40 85 Class D True Ground Yes 2     2
LM4851 1.9 1.5 1.4 1.1 0.3 70 Undefined 3 Pout=1W @ Vs=5V, RL=4 Ohms, 20Hz-20kHz 217 Hz, Input floating Undefined 5 Yes Yes No I2C 1 No 6 -40.5 8 +2.6 - +5 V 1 -40 85 Class AB Virtual Ground | null | null 1      
LM4934 1.4 1.2 1.3 1.1 0.2 60 95 6 Po=500mW;f-1kHz,8ohm BTL f=217hz,Vrpi=200mVpp,Cb=2.2uf,speaker only 3.3 Yes Yes No I2C,SPI 2,I2S Yes 5 -56 8 +2.7 - +5.5 V 1 -40 85 Class AB Virtual Ground   2     2
LM4949 1.24 1 0.765 0.615 0.02 73 Undefined 5 RL=8ohms, Po=300mW Differential Input Mode, f=217Hz Undefined 3.6 Yes Yes Yes I2C 1,2 No 18 -59 100 +2.7 - +5.5 V 1 -40 85 Class D Virtual Ground   2      
LM49250 1.21 0.985 0.775 0.625 0.02 95 Undefined 3 LS mode 2, RL=8ohms, Pout=300mW HP mode 2, f=217Hz, Vripple=200mVpp Undefined 3.6 Yes Yes Yes I2C 2 Yes 21 -64 100 +2.7 - +5.5 V Differential -40 85 Class D True Ground   3 Yes    
LM49270 0.87 0.7 0.56 0.45 0.02 75 Undefined 4 Pout = 12mW, RL=32ohm, OCL mode f=217Hz, Vripple = 200mVpp, HP OCL mode Undefined 3.3 Yes Yes Yes I2C 1 Yes 18 -59 6 +2.4 - +5.5 V 0 -40 85 Class D Virtual Ground   2      
LM4832 - - 0.35 0.25 0.15 89 105 2 Po=0.20W @ Vs=5V 100 Hz Vo=3.5V 5 -                 +4.5 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM4838 - 2 1.5 1.1 0.3 74 93 2 Po=1W @Vs=5V, 20Hz-20kHz 120 Hz RL=8 Ohms Pout=1.1W 5 No                 +2.7 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM4839 - 2 1.5 1.1 0.3 74 93 2 Po=1W @Vs=5V, 20Hz-20kHz 120 Hz RL=8 Ohms Pout=1.1W 5 Yes                 +2.7 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM4840 - 2 1.5 1 0.3 74 93 2 p=1w,20-20khz,rl=8avd=2 cb=1uf,f=120hz,vripple=200mvrms,rl=8 vdd=5v,pot=1.1w,rl=8, A wegihted 5 Yes                 +2.7 - +5.5 V -40 85 Class AB Cap Coupled 0   2      
LM4849 - 2 1.5 1.1 0.3 74 93 2 Po=1W @Vs=5V 20Hz-20kHz 120Hz RL=8ohm Po=1.1W 5 Yes                 +2.7 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM4868 -| 2.6 -| 2.1| 1.9 1.5| 1.4 1.1 0.3 67 97 2 Po=1W @ Vs=5V, R=8 Ohms| Po=2W @ Vs=5V, R=4 Ohms Vdd=5V, RL=8 Ohms RL=8 Ohms, Po=1.1W 5 Yes                 +2.0 - +5.5 V -40 85 Class AB Cap Coupled   2      
LM4883 - 2.1 - 1.3 0.05 73 - 4 8 ohm 200mW input gnd, 1KHz Vr 200mV, 8ohm 5 Yes                 +2.4 - +5.5 V -40 85 Class AB Cap Coupled   2      
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