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MAX4465, MAX4466, MAX4467, MAX4468, MAX4469
완벽한 셧다운 기능이 내장된 저가, 마이크로파워, SC70/SOT23-8, 마이크로폰 프리앰프


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전체 데이터 시트 (PDF, 508kB)
English Download this datasheet in PDF format다운로드
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 20µA 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.

주요기능   애플리케이션/용도
  • +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)

 
  • 휴대전화
  • 디지털 구술 녹음기
  • 헤드셋
  • 보청기
  • 마이크로폰 프리앰프
  • 휴대용 컴퓨팅
  • 음성인식 시스템

    Key Specifications:   Microphone Amplifiers
    Part Number Number of Channels Supply Voltage (min) (V) Supply Voltage (max) (V) Quiescent Supply Current (typ) (mA) THD+N (%) Input Noise-Voltage Density (nV/√Hz) PSRR (db) Input Type External Gain Microphone Bias Price**
    MAX4465  1 2.4 5.5 0.024 0.02 80 112 Single Ended Yes No $0.24 @ 1k
    MAX4466  1 0.03 No $0.24 @ 1k
    MAX4467  1 0.02 Yes $0.32 @ 1k
    MAX4468  1 0.03 Yes $0.32 @ 1k
    MAX4469  2 0.02 No $0.32 @ 1k
    See All Microphone Amplifiers (14)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    다이어그램
    MAX4465, MAX4466, MAX4467, MAX4468, MAX4469: Typical Operating Circuit
    일반 동작 회로

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    문서 레퍼런스 19-1950; 개정판 1; 2001-04-01
    이 페이지는 최근에 변경됨: 2007-06-14


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