MAX260BMRG

The MAX260/MAX261/MAX262 CMOS dual second-order universal switched-capacitor active filters allow microprocessor control of precise filter functions. No external components are required for various bandpass, lowpass, highpass, notch, and all pass configurations. Each device contains two second-order filter sections that place centre frequency, Q, and filter operating mode under programmed control. An input clock and a 6-bit f0 program input determine the filter's centre or corner frequency without affecting other filter parameters. The filter Q is also programmed independently. Separate clock inputs for each filter section operate with a crystal, RC network, or external clock generator. 

The MAX260BMRG has offset and DC specifications superior to the MAX261 and MAX262 and a center frequency (f0) range of 7.5kHz. The MAX261 handles center frequencies to 57kHz, while the MAX262 extends the center frequency range to 140kHz by employing lower clock-to-f0 ratios. All devices are available in 24-pin DIP and small-outline packages in commercial, extended, and military temperature ranges.

characterization

• Filter Design Software Available

• Microprocessor Interface

• 64-Step Center Frequency Control

• 128-Step Q Control

• Independent Q and f₀ Programming

• Guaranteed Clock to f₀ Ratio-1% (A grade)

• 75kHz f₀ Range (MAX262)

• Single +5V and ±5V Operation

Application Areas

• μP-Tuned Filters

• Adaptive Filters

• Anti-Aliasing Filters

• Digital Signal Processing (DSP)

• Phase-Locked Loops (PLLs)

• Signal Analysis

(Product Image: Diagram)

Technical Parameters

• 
  Number of Channels
  
• 
  2
  
• 
  Cutoff Frequency
  
• 
  7.5 kHz
  
• 
  Supply Voltage Max
  
• 
  12.6 V
  
• 
  Supply Voltage Min
  
• 
  4.74 V
  

MAX260BMRG Datasheet

• MAX260 data sheet for guidance

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