S8865-64G_15 Datasheet, PDF (7/15 Pages) Hamamatsu Corporation – Photodiode array combined with signal processing IC for X-ray detection

Photodiode arrays with amplifier
S8865-64G/-128G/-256G, S8866-64G-02/-128G-02
X-ray output example (S8865-64G)
(Distance from X-ray source to sensor: 300 mm, low gain, Ts=1.5 ms)
3.5
3.0
2.5
X-ray tube voltage: 70 kV
2.0
X-ray tube voltage: 50 kV
1.5
1.0
X-ray tube voltage: 30 kV
0.5
0
0
1
2
3
X-ray tube current (mA)
KMPDB0285EA
X-ray exposure test example (S8865-128G)
1 ^{[X-ray tube current: 3 mA, distance from X-ray source to sensor: 50 mm (without filter)]}
0.9
X-ray tube voltage: 30 kV
0.8
X-ray tube voltage: 60 kV
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 20 40 60 80 100 120 140 160
X-ray exposure time (h)
KMPDB0287EA
Uniformity example of X-ray output (S8865-64G)
20 ^{(X-ray tube voltage: 70 kV, X-ray tube current: 8 mA, distance from X-ray source to sensor: 300 mm)}
0
-20
-40
-60
-80
-100
0
10 20 30 40 50 60 70
Number of elements
KMPDB0286EA
Output offset voltage vs. ambient temperature (measurement example)
4.505
4.504
4.503
4.502
4.501
4.500
4.499
4.498
4.497
4.496
4.495
0
10
20
30
40
50
60
Ambient temperature (°C)
KMPDB0288EA
7