MARY™
is a solid state pixel detector readout ASIC chip with 192 x 384 array
of 50 x 50 micron pixel size for high resolution, high dynamic range industrial
or medical x-ray imaging such as digital radiography, nondestructive evaluation
or digital MAmmogRaphY.
Applications
MARY™ can be used for high resolution , high dynamic range industrial
imaging, such as digital radiography or digital mammography. Can be hybridized
with pixel detector arrays such as:
- Silicon pixel detectors.
- CdZnTe pixel detectors.
- GaAs pixel detectors.
Availability
MARY™ can be supplied as individual chips or integrated with solid
state detectors such as silicon, GaAs, CdTe, CdZnTe pixel detectors. Interface
electronics with data acquisition software and test and evaluation systems
are also available.
Specifications
Pixel Size: |
50 x 50 microns. |
Power Supply: |
Analog: 10V, 25mA; Digital: 10V, 6mA. |
TDI Stages and Scan Time: |
192 pixels in the Time Delayed Integration (TDI)
direction, 128 or 384 pixels in the non-TDI direction for the Small
and Large size MARYTM chips, respectively. Scan Time: <4 seconds. |
Charge Transfer Efficiency: |
>99.8% per transfer. |
DQE and MTF: |
High modulation transfer function (MTF) and detection
quantum efficiency (DQE): A limiting spatial resolution of > 10
lp/mm and a DQE of well over 85% at zero spatial frequency are anticipated
after hybridization with a properly selected pixel detector array. |
Dynamic range: |
>16,000 (14 bits) @ 9 Meg samples/sec output
rate. |
Linear response and well capacity: |
Linear throughout the dynamic range with total
maximum well capacity of ~4x108 electrons or holes (corresponds to
~71,000 incident X-rays per pixel for GaAs detector) for 20 keV X-rays. |
Readout noise: |
<20,000 electrons RMS (corresponds to <3
incident X-ray quanta per pixel on the average for GaAs detectors). |
Active area: |
(0.96 cm wide detector active width) x 30 cm (6,000
pixel) linear array for scanning any length. |
Image size: |
Any size such as 6,000 pixels width to any length. |
Operation temperature: |
-10 < T < 40 deg C. |
Images
The following pages contain images and data obtained using the MARY™
solid state pixel detector for X-ray imaging.
 Image
of a Mouse Kidney obtained using the MARY™ Pixel Detector. |
 Integrated
Circuit imaged with MARY™. |
 Image
of a Mosquito Fish obtained using the MARY™ Pixel Detector. |
 Large
and Small MARY™ chips. |
 Image
of a Sow bug obtained using the MARY™ Pixel Detector. |
 Concept
drawing of a solid state direct conversion Si PIN (CdZnTe) pixel
detector. |
 Image of a collimator pattern. |
 Image
of a lead foil bar pattern. |
 Teeth
imaged with MARY™. |
 Metrigraphics
Test Pattern imaged by the MARY™ chip hybridized to a silicon
PIN diode array. |
Data
- MTF plots of a 1mm thick silicon pixel detector.
- MARY™ Brochure with
Specifications
|
