Timepix4

One can choose between several data acquisition modes depending on the application requirement. In data driven mode, the arrival time (Time-of-Arrival – ToA) and charge deposit information (Time-over-Threshold – ToT), as well as coordinates of the active pixel, are provided for each hit. For imaging applications and for calibration, the ASIC can be operated in frame-based mode in either continuous read/write or sequential read/write mode. 

Advantages & Applications

Features;

  • Pixel size 55μm x 55μm.
  • 512 x 448 pixels.
  • Readout dead-time-free modes.
  • Data-driven or frame-based (sequential or continuous read/write) readout.
  • Large sensitive area (6.93 cm2) with almost no dead area (<0.5%).
  • Larger chip area and improved time stamp precision and hit rate capability compared to Timepix3.
  • 4-side buttable: 3x ‘hidden’ periphery TSV/IO.

Applications

  • X-ray and neutron imaging
  • Particle track reconstruction
  • Electron detectors
  • Material analysis 
  • Synchrotrons

Specifications

CMOS

65nm

Pixel size

55μm x 55μm

Pixel matrix

512 x 448

Time resolution

~200ps

Charge measurement

Noise: 80e- rms, Range: 200ke

Minimum operating threshold

~500e-

Hit arrival timing (ToA)

LSB=195ps, range: 1.638ms

Readout bandwidth

20.48 Gbps (4x 5.12 Gbps)

Interface

3x 147 I/O TSV/Wirebond

Power supply voltage

1.2V

Power consumption

~3.5W

Readout modes

Tracking (data driven)

Imaging (frame-based)

Mode 

ToT & ToA

Mode

CRW: Pixel Counter (6/16-bit)

Data

64-bit per hit

Frame rate

Up to 89kFPS

Max hit rate

3.58x106 hits/mm2/s (10.8 KHz / pixel)

Max hit rate

~ 5 x 109 hits/mm2/s