MAX4469

低成本、微功耗、SC70/SOT23-8封装、麦克风前置放大器,可完全关断


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说明

The MAX4465–MAX4469 are micropower op amps optimized for use as microphone preamplifiers. They provide the ideal combination of an optimized gain bandwidth product vs. supply current, and low-voltage operation in an ultra-small package. The MAX4465/MAX4467/MAX4469 are unity-gain stable and deliver a 200kHz gain bandwidth from only 24µA of supply current. The MAX4466/MAX4468 are decompensated for a minimum stable gain of +5V/V and provide a 600kHz gain bandwidth product. In addition these amplifiers feature rail-to-rail outputs, high AVOL, plus excellent power-supply rejection and common-mode rejection ratios for operation in noisy environments.

The MAX4467/MAX4468 include a complete shutdown mode. In shutdown, the amplifiers' supply current is reduced to 5nA and the bias current to the external microphone is cut off for ultimate power savings. The single MAX4465/MAX4466 are offered in the ultra-small 5-pin SC70 package, while the single with shutdown MAX4467/MAX4468 and dual MAX4469 are available in the space-saving 8-pin SOT23 package.
MAX4465、MAX4466、MAX4467、MAX4468、MAX4469:典型工作电路 MAX4465、MAX4466、MAX4467、MAX4468、MAX4469:典型工作电路 放大+

关键特性

  • +2.4V to +5.5V Supply Voltage Operation
  • Versions with 5nA Complete Shutdown Available (MAX4467/MAX4468)
  • Excellent Power-Supply Rejection Ratio: 112dB
  • Excellent Common-Mode Rejection Ratio: 126dB
  • High AVOL: 125dB (RL = 100kΩ)
  • Rail-to-Rail Outputs
  • Low 24µA Quiescent Supply Current
  • Gain Bandwidth Product:
    • 200kHz (MAX4465/MAX4467/MAX4469)
    • 600kHz AV ≥ 5 (MAX4466/MAX4468)
  • Available in Space-Saving Packages
    • 5-Pin SC70 (MAX4465/MAX4466)
    • 8-Pin SOT23 (MAX4467/MAX4468/MAX4469)

应用

  • 蜂窝电话
  • 数字复读装置
  • 耳机
  • 助听器
  • 麦克风前置放大器
  • 便携式计算机
  • 语音识别系统
Part NumberChannelsVSUPPLY
(V)
VSUPPLY
(V)
IQ
(mA)
THD+N
(%)
en
(nV/√Hz)
PSRR
(dB)
Input TypeExt. GainMicrophone BiasPackage/PinsBudgetary
Price
minmaxtypminSee Notes
MAX4466 12.45.50.0240.0380112Single EndedYesNo
SC70/5
SOT23/5
$0.24 @1k
MAX4467 0.02Yes
SOIC (N)/8
SOT23/8
$0.33 @1k
MAX4468 0.03Yes
SOIC (N)/8
SOT23/8
$0.32 @1k
查看所有Microphone Amplifiers (10)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

质量和环境数据

申请可靠性报告: MAX4469 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • MAX4469EKA+
  • MAX4469EKA+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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