MAX7480:八阶、低通、巴特沃兹、开关电容滤波器

The MAX7480 8th-order, lowpass, Butterworth, switched-capacitor filter (SCF) operates from a single +5V supply. The device draws only 2.9mA of supply current and allows corner frequencies from 1Hz to 2kHz, making it ideal for low-power post-DAC filtering and anti-aliasing applications. The MAX7480 features a shutdown mode, which 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 corner-frequency control. An offset adjust pin allows for adjustment of the DC output level. The MAX7480 Butterworth filter provides a maximally flat passband response. The fixed response simplifies the design task to selecting a clock frequency.

关键特性
  • 8th-Order, Lowpass Butterworth Filter
  • Low Noise and Distortion: -73dB THD + Noise
  • Clock-Tunable Corner Frequency (1Hz to 2kHz)
  • 100:1 Clock-to-Corner Ratio
  • +5V Single-Supply Operation
  • Low Power
    • 2.9mA (Operating Mode)
    • 0.2µA (Shutdown Mode)
  • Available in 8-Pin SO/DIP Package
  • Low Output Offset: ±5mV
MAX7480:典型工作电路
MAX7480:典型工作电路
应用
  • ADC抗混叠
  • DAC后置滤波
数据手册DataSheet
语言下载文件备注
英文MAX7480.pdfRev 0; 01/1999
关键参数
Part NumberFilter SectionsOrder Per Filter SectionFilter ClassFilter TypeFilter CharacteristicProgram MethodLowest Cutoff
(Hz)
Highest Cutoff
(kHz)
VSUPPLY
(V)
Design ToolsOper. Temp.
(°C)
Package/PinsBudgetary
Price
maxminSee Notes
MAX748018Switched CapLowpassButterworthClock125EE-Sim-40 to +85
  • PDIP(N)/8
  • SOIC(N)/8
$3.04 @1k
技术资料
质量和环境数据
相关产品
  • MAX291:八阶、低通、开关电容滤波器
  • MAX295:八阶、低通、开关电容滤波器
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX7480EPA停止供货MAX7480EPA+PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:否
MAX7480EPA+生产中PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:无铅
MAX7480ESA停止供货MAX7480ESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX7480ESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX7480ESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX7480ESA-T停止供货MAX7480ESA+TN.SO;8引脚-40°C至+85°C参考数据资料
MAX7480.pdf MAX7480
MAX7480.pdf MAX7480
MAX7480.pdf MAX7480
A Filter Primer MAX7491
MAX7480.pdf MAX7480
MAX7480.pdf MAX7480