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OxfordIonTrapGroup / stabilizer_current_sense

Low-noise current sense mezzanine for Stabilizer
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Add simulation outputs to schematic #13

Open hartytp opened 4 years ago

hartytp commented 4 years ago

From the spice model:

image

Low frequency output noise is 11.4nV/rtHz RTI. 3dB noise bandwidth is approx 55kHz.

hartytp commented 4 years ago

Gain and phase for a current source input

image

hartytp commented 4 years ago

3dB bandwidth is 45kHz, 6dB BW is approx 70kHz

hartytp commented 4 years ago

At 1kHz, our phase margin is 178deg (2 deg of phase lost). So, that's fine for the typical loops we use. No high frequency gain/noise peaking evident.

Good!