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
Back to top of page