Flat panel sensor C7921CA is a digital X-ray image sensor newly developed as key devices for non-destructive inspection, biomedical imaging,
X-ray microscopy and other real-time X-ray imaging applications requiring high resolution and high image quality. C7921CA consists of a sensor
board and a control board, both assembled in a thin, flat and compact package. The sensor board contains a CsI scintillator plate, a two-
dimensional photodiode array with FET switches and a signal processing IC chip. The photodiode array has a 1056 1056 pixel format with
minimized blooming and is highly sensitive to bluish green light emitted from the CsI scintillator. Each row of pixels is addressed in sequence by
the vertical shift register connected to the gate line.
Light emission occurs when X-rays are absorbed in the CsI scintillator. This light emission enters directly into the two-dimensional photodiode
array where an electric charge is stored in each pixel according to the light intensity. This charge is then transferred to the corresponding data line
by applying a control signal to the vertical shift register.
The sensor board also has 8 charge sensitive amplifier arrays each having 132 channel amplifiers with a horizontal shift register. These amplifiers
with a total of 1056 channels are connected to a CDS (Correlated Double Sampling) circuit that senses the charge on each video line and sends it
as the analog video signal from each amplifier array. The control board converts the analog video signal into a 12-bit digital signal and outputs it to
an external frame grabber from a 12-bit parallel port.
C7921CA delivers a frame rate of 16 frames per second using 4 4 binning and is ideal for high frame rate applications, also ideal for
applications requiring high resolution because of its 50 m pixel size. Massive digital image data can easily be monitored on a display unit by
using a frame grabber board and video memory installed in the PC. C7921CA will prove ideal tools for real-time X-ray imaging and processing
where easy-to-use, high-resolution X-ray digital image sensors are needed.
Features
l
Non-destructive inspection
l
Digital X-ray photography
Applications
l
High quality image: 1056 1056 pixels
l
Pixel size: 50 50 m
l
No image distortion
l
Digital output (12 bits)
l
High-speed imaging by binning operation:
16 frames/s (4 4 binning)
l
Wide dynamic range
l
High cost performance
I M A G E S E N S O R
Flat panel sensor
High resolution and high frame rate
C7921CA
AMP ARRAY No. 1
SHIFT REGISTER
TIMING
PULSE
GENERATOR
OSCILLATOR
ExtTrg
PIXEL NUMBER
Vsync
Hsync
Pclk
A/D
IntExt
IntExt
BINNING
(bin0, bin1)
EXTERNAL POWER SUPPLY
A. Vdd, D. Vdd V (7.5)
(not attached)
AMP ARRAY No. 8
PHOTODIODE
ARRAY
BUFFER
AMP
BUFFER
AMP
PROCESSING
AMP
PROCESSING
AMP
1
2
1115136
1115135
1056
1055
2112
2111
1057
SCINTILLATOR
(52.8 mm 52.8 mm)
BIAS
GENERATER
FIFO
A/D
FIFO
VIDEO OUTPUT
(12 BIT DIGITAL)
s
Block diagram
KACCC0170EA
1
Flat panel sensor
C7921CA
s Functional specification
Parameter
Specification
Readout
Charge amplifier array
Feedback capacitance of each amplifier
0.15 pF
Video output (Data1 - 12)
RS-422 (differential) 12 bit
Output data rate
6.25 MHz
Synchronous signal (Vsync, Hsync, Pclk)
RS-422 (differential)
bin0, 1, ExtTrg, IntExt
TTL
s Absolute maximum ratings (Ta=25 C)
Parameter
Symbol
Value
Unit
Supply voltage for digital circuitry (+5 V)
D.vdd
+6.0
V
Supply voltage for analog circuitry (+5 V)
A.vdd
+6.0
V
Supply voltage for analog circuitry (7.5 V)
V(+/-7.5)
12
V
Input voltage (bin0, 1, ExtTrg, IntExt)
Vin
0 to 6.0
V
Operating temperature (not condensed)
Topr
0 to +35
C
Storage temperature (not condensed)
Tstg
0 to +50
C
s Specification (Unless otherwise noted, Typ. Ta=25 C A.vdd= 5.0 V, D.vdd= 5.0 V, V (7.5)= 7.5 V)
Parameter
Symbol
Specification
Unit
Pixel size
-
50
m
Active area
-
52.8 52.8
mm
Pixel number
-
1056 1056
pixels
Number of active pixels
-
1032 1032
pixels
Frame speed (single operation)
Sf (int)
4
frame/s
Frame speed (2 2 binning)
-
8
frame/s
Frame speed (4 4 binning)
-
16
frame/s
Frame speed external (single operation )
Sf (ext)
Sf (int) to 0.1
frame/s
Noise (rms.)
N (rms.)
1000
electrons
Saturation charge
Csat
2.9
M electrons
Resolution
Reso
8
line pairs/mm
Dynamic range
-
2900
-
Defect line *
-
10 Max.
lines
Scintillator
-
CsI
-
* W ithout a couple of adjacent defect line that has no response.
s
Timing chart
To acquire images through an image grabber board, parameters that match the following timing chart should be described in the
software program or parameter file.
Internal mode
KACCC0167EA
Vsync+
(RS-422)
Hsync+
(RS-422)
Hsync+
(RS-422)
Pclk+
(RS-422)
Data1 - 12
(RS-422)
The number of n is 132
Tvc (1 FRAME)
Thd
Thdpw
Thc (1 LINE)
Tvdpw
Thdpw
Thc (1 LINE)
Tpd
Tpdb
Tpc (1 PIXEL)
Tppw
Tpdb
1
2
n-1
n
n+1
8n-1
8n
Tdc
Tdd
2
Flat panel sensor
C7921CA
External mode
KACCC0139EB
1 1 mode (Typ.)
Parameter
Symbol
Value
Unit
Delay time (only external trigger mode)
Tvd
450
s
Cycle time
Tvc
243
ms
Vsync
Dummy pulse width
Tvdpw
920
s
Delay time
Thd
2.8
s
Cycle time
Thc
230
s
Hsync
Dummy pulse width
Thdpw
59
s
Delay time
Tpd
150
ns
Cycle time
Tpc
160
ns
Pulse width
Tppw
85
ns
Pclk
Delay time between each block
Tpdb
480
ns
Delay time
Tdd
50
ns
Data1-12
Cycle time
Tdc
160
ns
2 2 mode (Typ.)
Parameter
Symbol
Value
Unit
Delay time (only external trigger mode)
Tvd
450
s
Cycle time
Tvc
122
ms
Vsync
Dummy pulse width
Tvdpw
920
s
Delay time
Thd
2.8
s
Cycle time
Thc
230
s
Hsync
Dummy pulse width
Thdpw
140
s
Delay time
Tpd
150
ns
Cycle time
Tpc
160
ns
Pulse width
Tppw
85
ns
Pclk
Delay time between each block
Tpdb
480
ns
Delay time
Tdd
50
ns
Data1-12
Cycle time
Tdc
160
ns
4 4 mode (Typ.)
Parameter
Symbol
Value
Unit
Delay time (only external trigger mode)
Tvd
450
s
Cycle time
Tvc
62
ms
Vsync
Dummy pulse width
Tvdpw
920
s
Delay time
Thd
2.8
s
Cycle time
Thc
230
s
Hsync
Dummy pulse width
Thdpw
190
s
Delay time
Tpd
150
ns
Cycle time
Tpc
160
ns
Pulse width
Tppw
85
ns
Pclk
Delay time between each block
Tpdb
480
ns
Delay time
Tdd
50
ns
Data1-12
Cycle time
Tdc
160
ns
Note) The numbers of siginificant figures is two. (except Tvc)
RECOMMENDATION: 50 % OF FRAME TIME
FROM Tvc TO 10 s
Tvc - Tvdpw
Tvd
ExtTrg
(TTL)
Vsync+
(RS-422)
Hsync+, Pclk and Data 1-12 are the same as internal trigger mode.
3
Flat panel sensor
C7921CA
4
s
System requirements
To operate C7921CA at full performance, the following system and peripherals are required.
PC: IBM compatible PC running on Windows 98 or later operating system
Digital frame grabber card: Monochrome 16 bits or more, pixel clock 7 MHz or more, RS-422 interface synchronous signal (See
the frame grabber manual.)
The National Instruments IMAQ PCI-1424 (NI parts No. 777662-01) frame grabber has been verified to successfully acquire 12-
bit digital images from C7921CA. The IMAQ PCI-1422 (NI pats No. 777959-01) also acquires satisfactory images from C7921CA.
You can utilize the demonstration software that comes with the frame grabber as a simple viewer, to acquire and save an image.
To do so, refer to the frame grabber user's guide for how to use the camera information file for the demonstration software.
Power source: A. Vdd = +5.0 0.1 V (700 mA), D. Vdd = +5.0 0.1 V (800 mA), V (7.5) = 7.5 0.5 V (100 mA). Use of a series
power supply is recommended. (Avoid using a switching power supply.) A power cable (terminated with an FGG.2B.307.CLAD92Z
plug at one end and open at the other end; 2 m; see Table 2.) comes supplied with C7921CA. An optional 36-pin cable for interface
with the 36-pin receptacle (see Table 1) on C7921CA is also available for synchronous signal input, video output and external
control.
The voltages described above are specified at the flat panel sensor side. The impedance of the power cable attached with the
flat panel sensor is low enough but it causes 0.1 V approx. drop. Therefore the voltage at the power source side should be set
0.1 V higher than the voltage specified above.
Table 1 Pin assignment of 36-pin receptacle
Pin No.
Signal
Pin No.
Signal
1
Data1+ (MSB)
19
Data1- (MSB)
2
Data2+
20
Data2-
3
Data3+
21
Data3-
4
Data4+
22
Data4-
5
Data5+
23
Data5-
6
Data6+
24
Data6-
7
Data7+
25
Data7-
8
Data8+
26
Data8-
9
Data9+
27
Data9-
10
Data10+
28
Data10-
11
Data11+
29
Data11-
12
Data12+(LSB)
30
Data12- (LSB)
13
bin0 (TTL)
31
Gnd
14
bin1 (TTL)
32
Gnd
15
ExtTrg (TTL)
33
IntExt (TTL)
16
Vsync+
34
Vsync-
17
Hsync+
35
Hsync-
18
Pclk+
36
Pclk-
Unless otherwise noted, signal level is RS-422.
36-pin receptacle: TX20A-36R-D2GF1-A1L made by JAE (Japan Aviation Electronics Industry limited)
36-pin mating plug: TX20A-36PH1-D2P1-D1 made by JAE (Japan Aviation Electronics Industry limited)
Table 2 Power pin assignment and cable color
Pin No.
Color
Signal
1
Brown
+7.5 V
2
Red
Analog GND
3
Orange
-7.5 V
4
Yellow
Analog GND
5
Green
Analog +5 V
6
Blue
Digital GND
7
Purple
Digital +5 V
Shield
-
Analog GND
7-pin power plug: FGG.2B.307.CLAD92Z made by LEMO S. A. (http://www.lemo.ch)
7-pin power receptacle: ECG.2B.307.CLV made by LEMO S. A.
Flat panel sensor
C7921CA
s
Connection
Install the frame grabber board into the PC by following the manufacturer's instructions. When a general-purpose frame
grabber board is used, binning or trigger operation for bin0, bin1, IntExt and ExtTrig can be controlled with its digital I/O control.
KACCC0168EA
VIDEO OUTPUT
(12 BIT DIGITAL)
Vsync, Hsync,
Pclk
BINNING
(bin0, bin1)
IntExt
ExtTrg
X-RAY SOURCE
GRABBER
MONITOR
PC/AT
(REAR VIEW)
C7921CA
OS +
ACQUISITION
SOFTWARE
VOLTAGE
SOURCE
[A. Vdd, D. Vdd, V (7.5)]
MOS Image Sensor for X-Ray
s Dimensional outline (unit: mm)
KACCA0103EA
5
142
30
142
33
MOS Image Sensor for X-Ray
C7921CA
33
Top cover is made of aluminum 1.0 mm thickness.
Weight: 1.37 kg
52.8
52.8
Digital Out
Power
Flat panel sensor
C7921CA
General purpose frame grabber cable
A8406-01/-06/-07/-08
6
Optional 36-pin cables
Two types of 36-pin cables are provided as options for connecting to the frame grabber.
Type A (A8406-01): General-purpose interface cable for digital flame grabber.
Type B (A8406-02): Interface cable for IMAQ PCI-1424 grabber board.
s Cable color coding and specifications
Pin No.
Signal
Cable color
Marking color
Pin No.
Signal
Cable color
Marking color
1
Data1+ (MSB)
blue
-
19
Data1- (MSB)
orange
-
2
Data2+
green
-
20
Data2-
brown
-
3
Data3+
gray
-
21
Data3-
red
-
4
Data4+
black
-
22
Data4-
yellow
-
5
Data5+
pink
-
23
Data5-
purple
-
6
Data6+
white
-
24
Data6-
blue
red
7
Data7+
orange
white
25
Data7-
green
white
8
Data8+
brown
white
26
Data8-
gray
white
9
Data9+
red
white
27
Data9-
black
white
10
Data10+
yellow
black
28
Data10-
pink
black
11
Data11+
purple
white
29
Data11-
white
blue
12
Data12+ (LSB)
blue
red
30
Data12- (LSB)
orange
white
13
bin0 (TTL)
green
white
31
Gnd
brown
white
14
bin1 (TTL)
gray
white
32
Gnd
red
white
15
ExtTrg (TTL)
black
white
33
IntExt (TTL)
yellow
black
16
Vsync+
pink
black
34
Vsync-
purple
white
17
Hsync+
white
blue
35
Hsync-
blue
black
18
Pclk+
orange
black
36
Pclk-
green
black
s Dimensional outline (unit: mm)
A8406-01/-06/-07/-08 cable for general frame grabber
18
36
1
19
a
36-PIN CABLE
TX20A-36PH1-D2P1-D1
Cable type No.
A8406-01
a
5000 140
A8406-06
7000 140
A8406-07
10000 140
A8406-08
12000 140
KACCA0096EB
A8406-01/-06/-07/-08 is a cable that connects the flat panel sensor (C7921CA, etc.) to a general frame grabber. One end of this
cable has a 36-pin plug mating with the C7921CA digital output receptacle, but the other end is left open. Connect the open end
to a plug that mates with the frame grabber to be used. Cable color coding and specifications are shown in the table below.
Type
Cable type No.
Cable length
Cable end
Cable end
A8406-01
5 m
A8406-06
7 m
A8406-07
10 m
A
A8406-08
12 m
open
A8406-02
5 m
A8406-03
7 m
A8406-04
10 m
B
A8406-05
12 m
TX20A-36PH1-D2P1-D1 *
1
PCS-XE100MA *
2
*1: Made by JAE (Japan Aviation Electronics Industry, Limited)
*2: Made by Honda Tsushin Kogyo Co. Ltd.
Digital frame grabber cable for IMAQ PCI-1424
A8406-02/-03/-04/-05
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Smidesvgen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. 2003 Hamamatsu Photonics K.K.
Cat. No. KACC1066E05
Sep. 2003 DN
A8406-02/-03/-04/-05 cable is designed to connect the flat panel sensor (C7921CA, etc.) to the National Instrument IMAQ PCI-
1424 and PCI-1422 digital frame grabber board. Both ends of this cable have connectors. One end is a 36-pin plug mating with
the C7921CA digital output receptacle, while the other end is a 100-pin plug for the IMAQ PCI-1424 and PCI-1422.
s Pin connection for A8406-02
TX20A-36PH1-D2P1-D1
Pin No.
Signal
PCS-XE100MA
Pin No.
TX20A-36PH1-D2P1-D1
Pin No.
Signal
PCS-XE100MA
Pin No.
1
Data1+ (MSB)
23
19
Data1- (MSB)
24
2
Data2+
21
20
Data2-
22
3
Data3+
19
21
Data3-
20
4
Data4+
17
22
Data4-
18
5
Data5+
15
23
Data5-
16
6
Data6+
13
24
Data6-
14
7
Data7+
11
25
Data7-
12
8
Data8+
9
26
Data8-
10
9
Data9+
7
27
Data9-
8
10
Data10+
5
28
Data10-
6
11
Data11+
3
29
Data11-
4
12
Data12+ (LSB)
1
30
Data12- (LSB)
2
13
bin0 (TTL)
33
31
Gnd
99
14
bin1 (TTL)
35
32
Gnd
100
15
ExtTrg (TTL)
37
33
IntExt (TTL)
39
16
Vsync+
41
34
Vsync-
42
17
Hsync+
43
35
Hsync-
44
18
Pclk+
49
36
Pclk-
50
s Dimensional outline (unit: mm)
A8406-02/-03/-04/-05 cable for IMAQ PCI-1424 frame grabber
Notice) Do not subject the Flat Panel Sensors to strong vibration or shock. (Strong shock such as drop impacts may cause
permanent damage to these sensors.)
Users must take responsibility for implementing X-ray shielding safety measures to avoid the risk of X-ray exposure.
This product was not designed and manufactured for use as a medical X-ray device. System manufacturers must take
responsibility for obtaining MHW or FDA approval when incorporating this product into a medical diagnostics system.
This product is warranted for a period of 12 months after the date of the shipment.
The warranty is limited to make a replacement or repair of any defective material due to defects in workmanship or
materials used in manufacture. It does not cover loss or damage of the product due to natural calamity, misuse or total
radiation dose over 1 million Roentgen (80 kV) even within the warranty period.
51
100
1
50
1
18
19
36
PCS-XE100MA
PCS-XEM100LU2
36-PIN CABLE
TX20A-36PH1-D2P1-D1
a
Cable type No.
A8406-02
a
5000 140
A8406-03
7000 140
A8406-04
10000 140
A8406-05
12000 140
KACCA0097EB
7
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