MAX7404

八阶、低通、椭圆函数、开关电容滤波器

尺寸最小的低功耗、8阶椭圆滤波器


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说明

The MAX7400/MAX7403/MAX7404/MAX7407 8th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7400/MAX7403) or +3V (MAX7404/MAX7407) supply. These devices draw 2mA of supply current and allow corner frequencies from 1Hz to 10kHz, making them ideal for low-power anti-aliasing and post-DAC filtering applications. They feature a shutdown mode that reduces the supply current to 0.2µA.

Two clocking options are available: self-clocking (through the use of an external capacitor) or external clocking for tighter cutoff-frequency control. In addition, an offset adjustment pin (OS) allows for the adjustment of the DC output level.

The MAX7400/MAX7404 provide 82dB of stopband rejection and a sharp rolloff with a transition ratio of 1.5. The MAX7403/MAX7407 provide a sharper rolloff with a transition ratio of 1.2, while still delivering 60dB of stopband rejection. The fixed response of these devices simplifies the design task to corner-frequency selection by setting a clock frequency. The MAX7400/MAX7403/MAX7404/MAX7407 are available in 8-pin SO and DIP packages.
MAX7400、MAX7403、MAX7404、MAX7407:典型工作电路 MAX7400、MAX7403、MAX7404、MAX7407:典型工作电路 放大+

关键特性

  • 8th-Order Lowpass Elliptic Filter
  • Low Noise and Distortion -82dB THD + Noise (MAX7400)
  • Clock-Tunable Corner Frequency (1Hz to 10kHz)
  • 100:1 Clock-to-Corner Ratio
  • Single-Supply Operation
    • +5V (MAX7400/MAX7403)
    • +3V (MAX7404/MAX7407)
  • Low Power
    • 2mA (Operating Mode)
    • 0.2µA (Shutdown Mode)
  • Available in 8-Pin SO and DIP Packages
  • Low Output Offset: ±5mV

应用

  • ADC抗混叠
  • 气囊电子装置
  • CT2基站
  • DAC后置滤波
  • 语音处理
Part NumberFilter SectionsOrder Per Filter SectionFilter ClassFilter TypeFilter CharacteristicProgram MethodLowest Cutoff
(Hz)
Highest Cutoff
(kHz)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxminSee Notes
MAX7400 18Switched CapLowpassEllipticClock1105
-40 to +85
0 to +70
PDIP/8
SOIC (N)/8
$3.15 @1k
MAX7403 5
PDIP/8
SOIC (N)/8
$2.94 @1k
MAX7404 3
PDIP/8
SOIC (N)/8
$3.30 @1k
MAX7407 3
PDIP/8
SOIC (N)/8
$3.03 @1k
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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。

工具和模型

  • EE-Sim: MAX7404 设计和仿真
  • CAD Symbols and Footprints

  • MAX7404CPA
  • MAX7404CPA+
  • MAX7404CSA
  • MAX7404CSA+
  • MAX7404CSA+T
  • MAX7404CSA-T
  • MAX7404EPA
  • MAX7404EPA+
  • MAX7404ESA
  • MAX7404ESA+
  • MAX7404ESA+T
  • MAX7404ESA-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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