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May 2006 [Devices & ICs] SiGe T/H Amplifier Grabs Wideband Data Wideband data-acquisition modules are needed for numerous emerging applications, from software-defined radios (SDRs) to real-time digital radar. System designers often point to the ideal of an antenna feeding a high-speed analog-to-digital converter (ADC). In reality, filtering frequency translation follow the antenna, while a buffer or track-and-hold (T/H) amplifier precedes the ADC. Since the ADC likes to “see” constant amplitude, a T/H amplifier capable of high... |
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