Maxim MAX261ACWG

Универсальный переключаемый конденсатор57 кГц22-й±5V

Overview

The MAX260/MAX261/MAX262 CMOS dual secondorder universal switched-capacitor active filters allow microprocessor control of precise filter functions. No external components are required for a variety of bandpass, owpass, highpass, notch, and allpass configurations. Each device contains two second-order filter sections that place center frequency, Q, and filter operating mode under programmed control. An input clock, along with a 6-bit f0 program input, determine the filter's center or corner frequency without affecting other filter parameters. The filter Q is also programmed independently. Separate clock inputs for each filter section operate with either a crystal, RC network, or external clock generator. The MAX260 has offset and DC specifications superior to the MAX261ACWG and MAX262 and a center frequency (f0) range of 7.5kHz. The MAX261ACWG 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.

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

Features

Applications

• Radar/Sonar
• Adaptive Filters
• Echo Cancellation
• Complex Multiply-Add
• Sample Rate Converters
• Digital Down Conversion
• D/A and A/D pre/post Filtering
• Tuning Bandwidth Expansion for HSP45116 and HSP45106
• Quadrature, Complex Flterlng
• Image Processing