MAX4298

超高PSRR立体声驱动器 + 麦克风放大器 + 100mA线性稳压器

具有极高PSRR的立体声耳机驱动器


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说明

The MAX4298 and MAX4299 are audio system ICs designed for single +5V applications. The MAX4299 features a stereo headphone driver, a microphone amplifier, and a +3.3V linear regulator; the MAX4298 features a stereo headphone driver. The MAX4298/MAX4299 are designed specifically for harsh digital environments where board space is at a premium and the digital power supply is noisy. The design uses innovative design techniques to achieve ultra-high power-supply rejection across the audio signal band while, at the same time, delivering a high-current Rail-to-Rail output drive capability. The chip is designed to drive highly capacitive loads that may be encountered when driving long cables to a remote load such as desktop/notebook headphones or speakers. These devices are fully compliant with PC99 standards.

The amplifiers exhibit 115dB of DC power-supply rejection and 80dB at 100kHz. The output amplifiers are capable of driving a 1.5VRMS signal into a 10-kilohm load with 0.0008% THD+N. They can also drive 32Ω headphones to 1.2VRMS with 0.02% distortion. At +3.3V, the linear regulator can output 100mA of current. The MAX4298 is available in a tiny 10-pin µMAX® while the MAX4299 is available in the space-saving 16-pin TSSOP package.
MAX4298:典型工作电路 MAX4298:典型工作电路 放大+

关键特性

  • Audio System IC (MAX4299)
    • Ultra-High PSRR Stereo Headphone Driver
    • Ultra-High PSRR Microphone Amp
    • 100mA, 3.3V Linear Regulator
  • 93dB typ PSRR at 20kHz Operates Directly from Noisy Digital Supplies
  • Clickless/Popless Power Up, Power Down, Mute and Unmute
  • PC99 Compliant Output Drivers:
    • Better than 1VRMS Output into 16Ω Load and 1.5VRMS and 0.0008% THD+N into 10kΩ Load
  • PC99-Compliant Microphone Amplifier:
    • 0.005% THD+N into 10kΩ Load
  • 22nF Capacitive Load Drive Capability
  • 4.5V to 5.5V Single-Supply Operation
  • Internally Generated Bias Voltage
  • All Gains Externally Adjustable
  • Available in Space-Saving Packages
    • 10-Pin µMAX (MAX4298)
    • 16-Pin TSSOP (MAX4299)

应用

  • 计算机:台式机、工作站和服务器
  • 消费类音频
  • 无绳电话
  • 笔记本电脑
  • 掌上电脑
  • 笔输入掌上电脑

质量和环境数据

申请可靠性报告: MAX4298 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX4298ESD+
  • MAX4298ESD+T
  • MAX4298EUB+
  • MAX4298EUB+T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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