S10831_15 Datasheet, PDF (2/9 Pages) Hamamatsu Corporation – CMOS area image sensors for X-ray imaging

CMOS area image sensors
S10831, S10835
Recommended operating conditions
Parameter
Symbol
Min.
Typ.
Max.
Unit
Power supply
Vdd
4.75
5.0
5.5
V
Digital input voltage*¹
High
Low
Vsigi(H)
2.4
Vsigi(L)
0
3.3
Vdd + 0.25
V
-
0.4
*1: Vsigi(H) is a “High” period voltage of MST and MCLK, Vsigi(L) is a “Low” period voltage of MST and MCLK.
Electrical characteristics (Ta=25 °C, Vdd=5 V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Master clock pulse frequency
f(MCLK)
1M
20 M
40 M
Hz
Digital output format
Digital output
Image sensor*²
frequency
Trigger photodiode*³
Digital output voltage*⁴
Digital output rise time*⁴ *⁵
Digital output fall time*⁴ *⁵
Video data rate
Image sensor*⁶
Trigger photodiode
Start pulse interval*⁷
Integration time
Image sensor*⁸
Trigger photodiode*⁹
Image sensor*¹⁰
Consumption current _{Trigger photodiode*11}
-
f(DO)
V(DOmag)
tr(DO)
tf(DO)
VR
VR2
T(ST-I)
-
P1
P2
LVDS differential output
-
f(MCLK)
-
-
f(MCLK)/56
-
-
350
-
-
2
5
-
2
5
-
f(MCLK)/14
-
-
f(MCLK)/7168
-
32.8 M
-
-
PW(MST) + 394/f(MCLK)
6608/f(MCLK)
-
55
110
-
25
50
-
Hz
mV
ns
ns
Hz
Hz
MCLK
s
s
mA
mA
*2: Refer to “Timing chart”, Image data readout.
*3: Refer to “Timing chart”, Trigger photodiode data readout.
*4: The output voltage difference between LVDS differential terminals with 100 Ω termination
*5: The time in output from 10% to 90% or from 90% to 10% with 2 m long cable
*6: It takes 14 master clock pulse cycles to read out 1 pixel
*7: It takes 32.8 M master clock pulse cycles to read out 1 frame of an image. The readout of the next frame must be started after
finishing the readout of previous frame.
*8: Refer to “Timing chart”, PW(MST) is “Low” pulse width of MST (master start pulse).
e.g.) When the PW(MST) is 10 ms and f(MCLK) is 20 MHz:
Integration time = 10 ms + 394/20 M = 10.0197 ms
*9: Refer to “Timing chart”, The trigger photodiode is output every 7168 MCLK cycles. The integration time is 6608 MCLK cycles, and
560 MCLK cycles are used for the reset period of trigger photodiode.
e.g.) When the f(MCLK) is 20 MHz:
Integration time = 6608/20 M = 330.4 μs
*10: The consumption current of image sensor chip only. f(MCLK)=20 MHz
*11: The consumption current of image sensor chip only. Without 100 Ω termination (see “Output format” in P.7). f(MCLK)=20 MHz
Resolution (S10835)
(X-ray source: 60 kVp, filter: ABS 1.5 mm^t)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0 2 4 6 8 10 12 14 16 18 20
Response (S10835)
6000
(X-ray source: 60 kVp, filter: ABS 1.5 mm^t)
1500
4000
1000
2000
500
0
0
0
100
200
300
400
Spatial frequency (line pairs/mm)
KMPDB0358EA
Absorbed dose (µGy)
KMPDB0359EA
2