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OxfordIonTrapGroup · May 14, 2019 · 5da8d01 · 5da8d01
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+Ultra-low noise limiting amplifier. Designed for stabilizing the amplitude of the RF voltages used in ion traps.
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+The circuit uses a low-noise digital circuit to convert an input "clock" to a square-wave with very stable amplitude. After band-pass filtering, we recover a sinusoid with stable amplitude.
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+Currently, the output RF power is fixed at around 10dm depending on frequency. If desired, this could be made tunable either by adding a step attenuator at the output, or by using a DAC to trim the 3V3 supply voltage.