CUBE - The CMOS Preamplifier for Radiation Detectors
CUBE is a low-noise CMOS preamplifier exclusively tailored for radiation detectors. The circuit, a Charge Sensitive Amplifier (CSA) operated in pulsed reset mode, is designed to offer the best noise performance at short peaking times enabling high-count rate measurements with excellent energy resolution.
Main characteristics
- Availability: bare die or on custom assembly
- Physical size: 0.75 mm x 0.75 mm x 0.25 mm
- Detector capacitance compatibility: from <0.25 pF to 10 pF
- Reset mode: pulsed reset or continuous (with external resistor)
Applications
- Silicon Drift Detectors (SDD)
- Silicon PIN diode (Si-PIN)
- High Purity Germanium (HpGE), CZT and CdTE detectors
The Bruker Cube product is manufactured and sold under licenses from Politecnico di Milano (patents JP2012-172331, JP2012-172332) and Oxford Instruments (patents EP2710733B, GB2491111B, US9397626 and JP6441675)
CUBE Schematic
CUBE Spectroscopic performance
Technical Data
| CUBE Version | Polarity | Detector capacitance [pF] | Feedback capacitance [fF] | ENC (CUBE only, 3.6 eV/e) | Main application |
|---|---|---|---|---|---|
| PRE_016 | Negative (electrons) | < 0.25 | 25 | 3.3 e- @ 1 μs | Silicon Drift Detector (SDD) |
| PRE_031 | Negative (electrons) | < 0.5 | 25 | 3.3 e- @ 1 μs | HpGe, CdTe or CZT |
| PRE_033 | Negative (electrons) | <0.25 | 25 | 2.4e- @ 1us | Silicon Drift Detector (SDD) |
| PRE_037 | Positive (holes) | < 0.70 | 25 | 4.0e- @1us | Si-PIN, HpGe, Strip or Pixelated detectors, X-ray application |
| PRE_038 | Positive (holes) | 0.50 - 3.00 | 50 | 12.3 e- @1us | Si-PIN, HpGe, Strip or Pixelated detectors, X-ray application |
| PRE_039 | Positive (holes) | 3.00-10.00 | 50 | 20.2e- @1us | Si-PIN, HpGe, Strip or Pixelated detectors, X-ray application |
| PRE_040 | Negative (electrons) | 0.50-3.00 | 50 | 12.4e- @1us | HpGe, CdTe or CZT, Strip or Pixelated detectors, X-ray application |
| PRE_041 | Both (selectable) | 3.00-10.00 | 500 | 57 e- @1us | HpGe, HpGe Cylindrical, CdTe or CZT, Strip, Hard X-ray or Gamma application |
| PRE_042 | Both (selectable) | 0.50-3.00 | 500 | 35.5 e- @1us | HpGe, HpGe Cylindrical, CdTe or CZT, Strip, Hard X-ray or Gamma application |
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