![]() For conversion of a narrowband intermediate frequency, either location may work well. You can set the random-dither center frequency either below or above the signal frequency of interest. ![]() Oscillator form a constant-amplitude dither generator. Because the LTC1799's output comprises a square wave, its peak output amplitude is well-defined.Ī zener diode, two stages of amplification, and an FM voltage-controlled You can set the LTC1799's center frequency at 1 kHz to 33 MHz, making it a suitable dither generator for many currently available A/D converters. Figure 1 shows one possible implementation featuring a Linear LTC1799 programmable oscillator, IC 2, that's operated in a VCO (voltage-controlled-oscillator) mode in which an applied voltage modulates the center frequency. Another approach adds a dithered-frequency, constant-amplitude signal.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |