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  • Using Digital Potentiometers to Design Low-Pass Adjustable Filters
    refer to Microchip’s Application Note 699,. entitled “Anti-Aliasing, Analog Filters for Data. Acquisition Systems” (DS00699). DS00737C-page 2.  2004 Microchip Technology Inc. AN737. TABLE 1: A BUTTERWORTH FILTER DESIGN ADJUSTING THE RESISTORS THROUGH A. DIGITAL POTENTIOMETER. Specifications
  • What are Electronic Filters?
    signal filter technology (analog/DSP) is less straightforward than simply selecting a transfer function from among Butterworth, Bessel, elliptic, or FIR-40, -60, -80 dB. The best solution depends heavily on the application. Linear-active filters serve applications that require system bandwidths
  • How to Specify RF & Microwave Filters (.pdf)
    In a classic case of what you don't know can hurt you, design engineers with advanced knowledge of digital electronics are discovering an urgent need to brush up on RF basics when it comes to specifying filters for. wireless devices. Failure to take into account the fundamental aspects of filter
  • Anti-Aliasing, Analog Filters for Data Acquisition Systems
    an analog filter, a digital filter or. both is shown in Figure 1. When an analog filter is. INTRODUCTION. implemented, it is done prior to the analog-to-digital. conversion. In contrast, when a digital filter is imple-. Analog filters can be found in almost every electronic. mented, it is done after
  • Removing Phase Delay Using Phaseless Filtering
    In many instances we need to filter a signal to remove unwanted frequencies. If we use classical filters such as Butterworth, Chebyshev or even Bessel then a phase delay is introduced. This phase delay is itself a function of frequency so that the signal content at one frequency is delayed
  • Designing Flexible Software-Defined Radio Architectures
    ). and the SKY73202-364LF Dual 6th Order Programmable. Butterworth Filter can be used in the transmit path or receive. Small DC offsets (tens of millivolts), caused mostly by the mixers,. path of a radio transceiver as anti-aliasing filters and to remove. are removed at the input of the PGAs by either an adaptive DC
  • AN115 Sampling Law
    BY 2 FOR NYQUIST”. analog-to-digital converter. As a general rule, no amount. of digital processing can correct the damage done. AN115. Dataforth Corporation. Page 3 of 3. Figure 2 illustrates the response versus frequency attributes of three common filters. Low Pass Filter Response. 8 Pole
  • Frequency Devices Glossary of Terms
    : The time difference in the starting points of two signals, both having the same frequency and measured in seconds. Digital Filter: Software configured filters that are used to condition digitized signals utilizing DSP's (Digital Signal Processor's) or hardware structures such as certain types