音频放大器

Analog Devices(ADI公司)是全世界高品质音频放大器的领先公司。ADI公司经过验证的模拟技术和数字技术为多种音频放大器提供高保真音响性能。该系列产品包括业界领先的传声器前置放大器及其驱动器、线路驱动器和接收器。扩展种类的音频放大器包括能提供声音浑厚的A/B类放大器和D类放大器以及广泛功率集成电路。

Circuit from the lab 已完成设计、测试,可供立即集成

产品选型表

Class-D Audio Amplifiers

Part#Input TypePout (typ)THD+N (typ)SNR (typ)Efficiency (typ)Vsupply (min)Vsupply (max)Isupply (typ)Feature
SSM4567 I2S Input 2.5 W 0.031 104 89.7 2.5 5.2 - Class-D
SSM4321 Diff Analog Input 2 W 0.01 - 89 2.5 5.5 3.8 mA Class-D
SSM2537 PDM Input 2.7 W 0.005 102 88 2.5 5.5 1.4 mA Class-D
SSM2529 I2S Input 2 W 0.03 103 91 2.5 5.5 3 mA Class-D
SSM2519 I2S Input 2 W 0.03 98 84 1.5 3.6 2.64 mA Class-D
SSM3302 Diff Analog Input 10 W 1 98 91 7 18 12.2 mA Class-D
SSM2804 Diff or SE Analog Input 2.9 W 0.01 94 89 2.5 3.6 9.8 mA Class-D
SSM2377 Diff Analog Input 2.5 W 0.007 101 92 2.5 5.5 2 mA Class-D
SSM2517 PDM Input 2.4 W 0.035 96 92 2.5 5.5 3.2 mA Class-D
SSM2380 Diff Analog Input 2.5 W 0.005 100 93 2.5 5.5 6 mA Class-D
SSM2375 Diff Analog Input 3 W 0.01 100 93 2.5 5.5 2.7 mA Class-D
SSM2356 Diff Analog Input 2 W 0.004 100 92 2.5 5.5 4.9 mA Class-D
SSM2335 Diff Analog Input 3 W 0.01 96 93 2.5 5.5 2.8 mA Class-D
SSM2319 Diff Analog Input 3 W 0.02 98 90 2.5 5.5 3.2 mA Class-D
SSM2317 Diff Analog Input 3 W 0.02 93 93 2.5 5.5 3.2 mA Class-D
SSM2315 Diff Analog Input 3 W 0.004 103 93 2.5 5.5 2.8 mA Class-D
SSM2305 Diff Analog Input 2.8 W 0.02 98 89 2.5 5.5 2.8 mA Class-D
SSM2306Reference Circuit Available Diff Analog Input 2 W 0.02 96 87 2.5 5 5.7 mA Class-D
SSM2304 Diff Analog Input 2 W 0.2 102 85 2.5 5 6.5 mA Class-D
SSM2301 Diff Analog Input 1.4 W 0.004 98 85 2.5 5 3.5 mA Class-D
SSM2302 Diff Analog Input 1.4 W 0.04 98 85 2.5 5 6.6 mA Class-D
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Mic/Pre-Amp Audio Products

Part#Audio ApplicationVsupply span (min)Vsupply span (max)US Price 1000 to 4999
ADA4075-2Reference Circuit Available Op-Amp 24 36 $0.75
SSM2019 Pre-Amp 10 36 $1.96
SSM2167Reference Circuit Available Pre-Amp 3 3 $1.20
SSM2166Reference Circuit Available Pre-Amp 5 5 $3.13
SSM2018 Single VCA 30 30 $3.33
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Audio Line Drivers and Receivers

Part#CMR (dB)Gain (min)Gain (max)Gain Error (%)Slew Rate (V/ms)Vsupply span (min)Vsupply span (max)Isupply (max)THD+N (%)US Price 1000 to 4999
AD8274Reference Circuit Available 86 -6 2 0.05 20 5 36 2.6 mA 0.00025 $1.05
AD8273Reference Circuit Available 86 -6 2 0.05 20 5 36 2.5 mA 0.00025 $1.60
SSM2143 90 -6 6 0.03 10 12 36 4 mA 0.0006 $1.66
SSM2142 - - 6 0.7 15 10 36 7 mA 0.006 $2.65
SSM2141 100 - 6 0.001 9.5 12 36 3.5 mA 0.001 $1.74
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新产品

  • SSM4567- 带输出检测的2.5 W、5.1 V数字升压D类音频放大器

    SSM4567是一款数字输入D类功率放大器,集成升压转换器,相比普通电池电源具有更高的输出功率。 这意味着最大输出功率在电池电压范围内是恒定的。 SSM4567是功率敏感应用的理想选择。在功率敏感应用中系统噪声能够破坏发送至放大器的小模拟信号,例如移动电话、平板电脑和便携式多媒体播放器。

    SSM4567在单个芯片上集成了一个音频数模转换器(DAC)、一个功率放大器和PDM或PCM (I2S/TDM)数字音频接口。 利用SSM4567,音频能够以数字的方式发送至音频放大器,从而显著降低传输音频上噪声源的影响,无需使用输入耦合电容。 SSM4567采用3.6 V电源供电时,能够提供2.5 W连续输出功率,驱动4Ω负载,且THD+N值小于1%。

    通过I2C、PDM模式控制或TDM控制,可控制SSM4567。 该器件也可以在无控制接口的独立模式下工 更多Read more

    SSM4567 框图
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