Product Description
The VATA450.3 is a 64 channel readout ASIC with CSA (charge sensitive amplifiers) and 10 bit ADCs with latches in every channel. Triggering is generated by a digital threshold applied to 10 bit digital comperators. A common mode (CM) detector is included on-chip. After each readout the threshold value is common mode corrected. Includes dummy channel for on-chip pedestal correction. Two pre-amplifier gain modes are configurable, with input charge range (dynamic range) ±16 fC or ±40 fC. The VATA450.3 has an alternative mode which provides lower noise (98e + 5.3e/pF) with an increased power dissipation (1mW/channel). Data is read out on a serialized digital interface, which also provides the triggering signals.
Keywords: ASTRO-H, soft gamma-ray detector (SGD)
Additional files: IDE-VATA450
Publications
- JT.Tanaka, et al., 2009, “The Soft Gamma-ray Detector for the ASTRO-H mission”, Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE , vol., no., pp.2140,2144, Oct. 24 2009-Nov. 1 2009, [DOI:10.1109/NSSMIC.2009.5402092]
Product Features
| Detectors | CZT, CdTe |
| Detectors | CZT, CdTe |
| Application | Tracking, Spectroscopy, Calorimetry |
| Number of inputs | 64 |
| Input charge range | 2 gain settings: ±16 fC, ±40 fC |
| Shaping time | 4 μs (VA), 0.6 μs (TA) |
| Nominal capacitive load | 6 pF |
| Equivalent Noise Charge (ENC) | 65e + 19e/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 |