MAX270:数字可编程、双路、二阶、连续时间方式低通滤波器

The MAX270/MAX271 are digitally-programmed, dual second-order continuous-time lowpass filters. Their typical dynamic range of 96dB surpasses most switched capacitor filters which require additional filtering to remove clock noise. The MAX270/MAX271 are ideal for anti-aliasing and DAC smoothing applications and can be cascaded for higher-order responses. The two filter sections are independently programmable by either microprocessor (µP) control or pin strapping. Cutoff frequencies in the 1kHz to 25kHz range can be selected. The MAX270 has an on-board, uncommitted op amp, while the MAX271 has an internal track-and-hold (T/H).

关键特性
  • Continuous-Time Filtering - No Clock Required
  • Dual 2nd-Order Lowpass Filters
  • Sections Independently Programmable: 1kHz to 25kHz
  • 96dB Dynamic Range
  • No External Components
  • Cascadable for Higher Order
  • Low-Power Shutdown Mode
  • Track-and-Hold (MAX271)
MAX270:引脚配置
MAX270:引脚配置
应用
    数据手册DataSheet
    语言下载文件备注
    英文MAX270-MAX271.pdfRev 2; 11/2012
    关键参数
    Part NumberFilter SectionsOrder Per Filter SectionFilter ClassFilter TypeFilter CharacteristicProgram MethodLowest Cutoff
    (Hz)
    Highest Cutoff
    (kHz)
    VSUPPLY (Dual)
    (±V)
    VSUPPLY
    (V)
    Oper. Temp.
    (°C)
    Package/PinsBudgetary
    Price
    maxminDualSee Notes
    MAX27022ContinuousLowpassChebychev
    • µP Bus
    • Pin Strap
    10002555
    • -55 to +125
    • -40 to +85
    • 0 to +70
    • CDIP(N)/20
    • PDIP(N)/20
    • SOIC(W)/20
    $11.29 @1k
    MAX271
    • CDIP(N)/24
    • PDIP(N)/24
    • SOIC(W)/24
    $11.80 @500
    技术资料
    相关产品
    • MAX274:四阶及八阶、连续时间方式有源滤波器
    • MAX275:四阶及八阶、连续时间方式有源滤波器
    订购型号
    型号状况推荐替代产品封装温度RoHS/无铅
    MAX270C/D停止供货MAX270EWP+DICE SALES,;NA引脚;DICE S;0°C至+70°C参考数据资料
    MAX270CPP停止供货MAX270CPP+PDIP(N),;20引脚;217.1mm²0°C至+70°CRoHS/无铅:否
    MAX270CPP+生产中PDIP(N),;20引脚;217.1mm²0°C至+70°CRoHS/无铅:无铅
    MAX270CWP停止供货MAX270CWP+SOIC(W),;20引脚;138.5mm²0°C至+70°CRoHS/无铅:否
    MAX270CWP+生产中SOIC(W),;20引脚;138.5mm²0°C至+70°CRoHS/无铅:无铅
    MAX270CWP+T生产中W.SO;20引脚0°C至+70°C参考数据资料
    MAX270CWP-T停止供货MAX270CWP+TW.SO;20引脚0°C至+70°C参考数据资料
    MAX270EPP停止供货MAX270EPP+PDIP(N),;20引脚;217.1mm²-40°C至+85°CRoHS/无铅:否
    MAX270EPP+生产中PDIP(N),;20引脚;217.1mm²-40°C至+85°CRoHS/无铅:无铅
    MAX270EWP停止供货MAX270EWP+SOIC(W),;20引脚;138.5mm²-40°C至+85°CRoHS/无铅:否
    型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
    MAX270EWP+生产中SOIC(W),;20引脚;138.5mm²-40°C至+85°CRoHS/无铅:无铅
    MAX270EWP+T生产中SOIC(W),;20引脚;138.5mm²-40°C至+85°CRoHS/无铅:无铅
    MAX270EWP-T停止供货MAX270EWP+TSOIC(W),;20引脚;138.5mm²-40°C至+85°CRoHS/无铅:否
    MAX270MJP停止供货CDIP(N),;20引脚;218.9mm²-55°C至+125°CRoHS/无铅:否
    MAX270-MAX271.pdf MAX271
    µP-Supervisor Chip Controls Programmable Filter MAX270
    Three ICs Produce Pure Sine Waves MAX270
    MAX270-MAX271.pdf MAX271