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ADF4360-9 Clock Generator PLL with Integrated VCO (Rev. C)
ADF4360-9 Clock Generator PLL with Integrated VCO (Rev. C)

... Control Input to the VCO. This voltage determines the output frequency and is derived from filtering the CP output voltage. An external inductor to AGND should be connected to this pin to set the ADF4360-9 output frequency. L1 and L2 need to be the same value. A 470 Ω resistor should be added in par ...
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LMP7731 2.9 nV/sqrt(Hz) Low Noise, Precision, RRIO Amplifier (Rev
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... Control Input to the VCO. This voltage determines the output frequency and is derived from filtering the CP output voltage. An external inductor to AGND should be connected to this pin to set the ADF4360-9 output frequency. L1 and L2 need to be the same value. A 470 Ω resistor should be added in par ...
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... The resistor value is the primary concern. The value of the resistor may be indicated by three to five digits. In all cases, the last digit indicates the number of zeros to be added to the preceding digits. In the example given, the last digit (2) indicates the number of zeros to be added to the fir ...
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... to 63°, and boosts the low frequency gain dramatically, with an integrator gain of 250K/f. It is this characteristic which causes the current loop to rapidly and accurately home in on the average current called for by the outer loop. Even though the comparator actually turns off the power switch whe ...
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... To address the second problem, a prototype buffer amplifier is built and verified. Measurements of the buffer amplifier show that it performs very well. At 100 kHz, the amplitude error is less than 20 µV/V, the phase error is less than 20 µrad, and the input Rp is over 10 MΩ. This is performance in ...
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... The MAX3243 consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD (HBM) protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous c ...
Average Current Mode Control of Switching Power Supplies
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Regenerative circuit



The regenerative circuit (or regen) allows an electronic signal to be amplified many times by the same active device. It consists of an amplifying vacuum tube or transistor with its output connected to its input through a feedback loop, providing positive feedback. This circuit was widely used in radio receivers, called regenerative receivers, between 1915 and World War II. The regenerative receiver was invented in 1912 and patented in 1914 by American electrical engineer Edwin Armstrong when he was an undergraduate at Columbia University. Due partly to its tendency to radiate interference, by the 1930s the regenerative receiver was superseded by other receiver designs, the TRF and superheterodyne receivers and became obsolete, but regeneration (now called positive feedback) is widely used in other areas of electronics, such as in oscillators and active filters. A receiver circuit that used regeneration in a more complicated way to achieve even higher amplification, the superregenerative receiver, was invented by Armstrong in 1922. It was never widely used in general receivers, but due to its small parts count is used in a few specialized low data rate applications, such as garage door openers, wireless networking devices, walkie-talkies and toys.
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