Product Description
The VATA451 is a 64 channel front-end readout for silicon strip and silicon radiation sensors. The circuit was used in the Focusing Optics X-ray Solar Imager (FOXSI). Each CSA is followed by a slow and a fast shaper. The fast shaper signals are compared with a global trigger threshold. Each channel has a 10-bit ADC with latches. The digitized pulseheight can be read out from a digital multiplexer. A common mode (CM) detector is included on-chip.
Keywords: Focusing optics x-ray solar imager (FOXSI)
Publications
- S. Ishikawa, et al. 2011, “Fine-Pitch Semiconductior Detector for the FOXSI Mission”, IEEE Transactions on Nuclear Science, vol. 58, issue 4, pp. 2039-2046, DOI: 10.1109/TNS.2011.2154342
Product Features
| Detectors | Silicon |
| Application | Imaging, Spectroscopy, Tracking |
| Number of inputs | 64 |
| Input charge range | -1.6 fC to +1.6 fC |
| Shaping time | 4 μs (VA), 0.6 μs/1.2 μs programmable (TA) |
| Nominal capacitive load | 5 pF |
| Equivalent Noise Charge (ENC) | 30e + 7e/pF |
| Trigger threshold | Adjustable |
| Trigger outputs | Common trigger output for all channels |
| Outputs | Serial digitized pulse height |
| Test and calibration | Calibration circuit and ADC test circuit |
| Power consumption | 1 mW / channel |