Principle of Noise Waveform Measurement


  • Circuit structure: level shifter, latched comparator
  • This circuit detects the noise using the principle of sampling oscilloscope.


On-chip Noise Test Circuit

On-chip noise detector


  • Voltage probe: any posion on substrate, power supply, ground line
  • Comparator: 6-ch
  • Level shifter: 3.3V → 1.2V, 0V → 1.2V
  • BW: about 1GHz
  • DAC: 6-ch, 8-bit
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