Flat panel sensor
C9728DK-10
For diffraction, cassette type with USB 2.0 interface
Photodiode area: 52.8 × 52.8 mm
The C9728DK-10 is a high detection capability digital X-ray image sensor newly developed as a key device for X-ray diffracto-
meters less than 18 keV. The device shape is thin cassette which incorporates on-chip high-resolution scintillator and a control
board. An on-board USB 2.0 interface can realize fast data transfer with the C9728DK-10.
Features
Applications
Active pixels readout*1
Diffraction
Low noise: 80 electrons
Radiography
1032 × 1032 pixels (50 μm pitch)
High resolution
*1: The amplifier integrated in each pixel converts charge to voltage.
Since the amplifier input capacitance is small compared to the
passive pixel type, imaging can be made with low noise and high
sensitivity.
14-bit digital output (USB 2.0 interface)
High-speed imaging: 3 frames/s
Compatible with Hamamatsu API (DCAM-API)
Structure
The C9728DK-10 is comprised of a sensor board and a control board. Mounted on the sensor board is a CMOS image sensor chip made up of a
two-dimensional active pixel amplifier array, row-scanning vertical shift register, and 8 shift register blocks.
CsI scintillator is directly deposited on the two-dimensional photodiode array. X-rays incident on the scintillator are converted to fluorescence, which
then enters the two-dimensional photodiode array where electric charge is accumulated in each pixel according to the light intensity. Each pixel has
a low noise active pixel amplifier. The analog video signal from each pixel is held by the 1056 ch sample-and-hold circuit with a CDS (correlated
double sampling) circuit added, and is then output from each amplifier array by scanning the horizontal shift register.
The control board converts the analog signal into a 14-bit digital signal, which is then output to a PC through the USB 2.0 interface.
Sensor board
Pixel number
1
2
1055
1056
2112
1057
2111
External power supply
A.vdd, D.vdd (not attached)
Active pixel amplifier
array
with directly
deposited CsI
scintillator
Oscillator
1115135
1115136
Timing
pulse
generator
TrgIn
Horizontal shift
register No. 1
Horizontal shift
register No. 8
TrgOut
Bias
generator
Buffer
amp
Processing
A/D
A/D
FIFO
FIFO
amp
Video data
Flat panel control
(USB 2.0 interface)
USB IC
Buffer
amp
Processing
amp
Control board
Note: Signals are read out in order of pixel number.
KACCC0617EA
1
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