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CMOS 180 MHz DDS/DAC Synthesizer AD9851
CMOS 180 MHz DDS/DAC Synthesizer AD9851

... 8-Bit Data Input. The data port for loading the 32-bit frequency and 8-bit phase/control words. D7 = MSB; D0 = LSB. D7, Pin 25, also serves as the input pin for 40-bit serial data word. 6 REFCLK Multiplier Ground Connection. 6 REFCLK Multiplier Positive Supply Voltage Pin. Word Load Clock. Rising ...
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Valve RF amplifier



A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical radio frequency signal.Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later. Specially constructed valves are still in use for very high power transmitters, although rarely in new designs.
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