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UFC TDC-GP22 Main Features

General

  • 4-wire SPI interface
  • 1 MHz continuous data rate max.
  • I/O voltage 2.5 V to 3.6 V
  • Core voltage 2.5 V to 3.6 V
  • Temperature range - 40 °C to +125 °C
  • QFN 32 package

Circuit Features

Measurement Mode 1

  • 2 channels with typ. 90 ps resolution
  • 1-channel double resolution with typ. 45 ps
  • Range 3.5 ns (0 ns) to 2.5 µs
  • 20 ns pulse-pair resolution, 4-fold multihit
  • Up to 1 million measurements per second in measure mode 1

Measurement Mode 2

  • 1 channel with typ. 90 ps resolution
  • Double resolution mode with 45 ps, Quad resolution mode with 22 ps resolution
  • Measurement range 500 ns to 4 ms
  • 3-fold multihit capability with automatic processing of all 3 data

Special Functions

  • Fire pulse generator, up to 127 pulses
  • Trigger to rising and/or falling edge
  • Precise stop enable by windowing
  • Low-power 32 kHz oscillator (500 nA)
  • Clock calibration unit
  • 7x32 Bit EEPROM

Analog Input Circuit

  • Chopper-stabilized low-offset comparator, programmable, ±35 mV
  • First-wave detection: offset set zero automatically after first wave, hit selection relative to first wave
  • First-wave pulse-width measurement for signal monitoring and bubble detection
  • Integrated analog switches for input selection
  • External circuit is reduced to 2 resistors and 2 capacitors

Temperature Measurement Unit

  • Chopper-stabilized low-offset comparator, programmable, ±35 mV
  • First-wave detection: offset set zero automatically after first wave, hit selection relative to first wave
  • First-wave pulse-width measurement for signal monitoring and bubble detection
  • Integrated analog switches for input selection
  • External circuit is reduced to 2 resistors and 2 capacitors

Functional Block Diagram

(click to enlarge)