LTC1563-3 有源 RC、4 阶低通滤波器系列

The LTC®1563-2/LTC1563-3 are a family of extremely easy-to-use, active RC lowpass filters with rail-to-rail inputs and outputs and low DC offset suitable for systems with a resolution of up to 16 bits. The LTC1563-2, with a single resistor value, gives a unity-gain Butterworth response. The LTC1563-3, with a single resistor value, gives a unity-gain Bessel response. The proprietary architecture of these parts allows for a simple resistor calculation: R = 10k (256kHz/fC); fC = Cutoff Frequency where fC is the desired cutoff frequency. For many applications, this formula is all that is needed to design a filter. By simply utilizing different valued resistors, gain and other responses are achieved. The LTC1563-X features a low power mode, for the lower frequency applications, where the supply current is reduced by an order of magnitude and a near zero power shutdown mode. The LTC1563-Xs are available in the narrow SSOP-16 package (Same footprint as an SO-8 package).

产品特点 Features
  • Extremely Easy to Use—A Single Resistor Value Sets the Cutoff Frequency (256Hz < fC < 256kHz)
  • Extremely Flexible—Different Resistor Values Allow Arbitrary Transfer Functions with or without Gain (256Hz < fC<256kHz)
  • Supports Cutoff Frequencies Up to 360kHz Using FilterCAD™
  • LTC1563-2: Unity-Gain Butterworth Response Uses a Single Resistor Value, Different Resistor Values Allow Other Responses with or without Gain
  • LTC1563-3: Unity-Gain Bessel Response Uses a Single Resistor Value, Different Resistor Values Allow Other Responses with or without Gain
  • Rail-to-Rail Input and Output Voltages
  • Operates from a Single 3V (2.7V Min) to ±5V Supply
  • Low Noise: 36µVRMS for fC = 25.6kHz, 60µVRMS for fC = 256kHz
  • fC Accuracy < ±2% (Typ)
  • DC Offset < 1mV
  • Cascadable to Form 8th Order Lowpass Filters
  • Available in Narrow SSOP-16 Package
应用
  • Discrete RC Active Filters and Modules
  • Antialiasing Filters
  • Smoothing or Reconstruction Filters
  • linear Phase Filtering for Data Communication
  • Phase Locked Loops
典型应用图
LTC1563-2 典型应用
参数
LTC1563-2 参数
LTC1563-3 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LTC1563-2CGN SSOP 16 C $2.35  $1.95 
LTC1563-2CGN#PBF SSOP 16 C $2.35  $1.95 
LTC1563-2CGN#TR SSOP 16 C $2.01 
LTC1563-2CGN#TRPBF SSOP 16 C $2.01 
LTC1563-2IGN SSOP 16 I $2.60  $2.15 
LTC1563-2IGN#PBF SSOP 16 I $2.60  $2.15 
LTC1563-2IGN#TR SSOP 16 I $2.21 
LTC1563-2IGN#TRPBF SSOP 16 I $2.21 
LTC1563-3CGN SSOP 16 C $2.35  $1.95 
LTC1563-3CGN#PBF SSOP 16 C $2.35  $1.95 
LTC1563-3CGN#TR SSOP 16 C $2.01 
LTC1563-3CGN#TRPBF SSOP 16 C $2.01 
LTC1563-3IGN SSOP 16 I $2.60  $2.15 
LTC1563-3IGN#PBF SSOP 16 I $2.60  $2.15 
LTC1563-3IGN#TR SSOP 16 I $2.21 
LTC1563-3IGN#TRPBF SSOP 16 I $2.21 
LTC1563-3 数据手册及相关资料下载
  1. 数据手册(英文) : LTC1563-2/LTC1563-3 - Active RC, 4th Order Lowpass Filter Family.PDF
  2. 设计要点 (英文) : DN245 - Free FilterCAD 3.0 Software Designs Filters Quickly and Easily.PDF
  3. 设计要点 (英文) : DN251 - Replace Discrete Lowpass Filters with the LTC1563 Zero Design Effort, Two Item BoM and No Surprises.PDF
  4. 可靠性数据 : R401 Reliability Data.PDF