Time-to-Digital-Converters by Acam
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Time to Digital Converters

TDC - GP1
TDC - GP2
TDC - GP21
TDC - GP22
TDC - GPX
Time-to-Digital Applications
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PICOSTRAIN

Time to Digital Converters for Digital Strain Gage

PICOSTRAIN PS08
PICOSTRAIN PS081
PICOSTRAIN PS09
PICOSTRAIN PS021
Strain Gage Applications
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PICOCAP

Time to Digital Converters for Capacitance Measurement

PICOCAP PCap01
PICOCAP PS021
PICOCAP PSA21
Capacitance Applications
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PICOTURN

Time to Digital Converters for Speed Sensors

PICOTURN 2G
PICOTURN BM/SM
Speed Sensor Applications
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Time-to-Digital - TDC Cookbook

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time-to-digital converters
TDC - Cookbook
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PICOCAP® PS021 for Capacities

PS021 Measures Strain Gage and Capacitance

PSØ21 has the capability to measure not only strain gages, but also capacities. The PICOCAP® measuring principle is a direct derivate of the  PICOSTRAIN® measuring principle. The measuring capacitor and a reference capacitor build together with a resistance an RC network. The ratio of the capacities is given through the ratio of discharge times. Patent pending algorithms provide a good suppression of parasitic capacities and ensure a very good temperature stability.

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PICOCAP® TDC Advantages

  • Wide capacitance range from fF up to > 100 nF
  • High measuring rates up to 50 kHz
  • High precision up to 20 ENOB@5Hz or 13 ENOB@10kHz
  • Low current consumption down to the µA range at low measuring rates
  • Patent pending gain compensation offers temperature drift of only about 6ppm/K
  • Up to 4 sensors (without gain compensation)
  • Separate temperature measuring unit
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Capacitance - Typical Application Circuit

capacitance circuit