From 5da8d01be00fdecc859448bc45afb9e520d0e04e Mon Sep 17 00:00:00 2001 From: hartytp Date: Tue, 14 May 2019 16:22:39 +0100 Subject: [PATCH] add readme --- readme.md | 5 +++++ 1 file changed, 5 insertions(+) create mode 100644 readme.md diff --git a/readme.md b/readme.md new file mode 100644 index 0000000..39f6df6 --- /dev/null +++ b/readme.md @@ -0,0 +1,5 @@ +Ultra-low noise limiting amplifier. Designed for stabilizing the amplitude of the RF voltages used in ion traps. + +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. + +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. \ No newline at end of file