G12242-0707W_15 Datasheet, PDF (2/10 Pages) Hamamatsu Corporation – Near infrared area image sensor with 128 x128 pixels

InGaAs area image sensor
G12242-0707W
Global shutter mode
In this mode, the integration time is equal to the low period of the MSP and the output voltage is sampled and held simultaneously at
all pixels. Then the signals are sequentially read out in the same way as the rolling shutter mode.
The vertical shift register scans from top to bottom while sequentially selecting each row. The following operations  to ‘ are per-
formed on each pixel of the selected row:
 Transfers the optical signal information sampled and held in each pixel to the signal processing circuit as a signal voltage, and sam-
ples and holds the signal voltage.
 Resets each pixel after having transferred the signal, transfers the reset signal voltage to the signal processing circuit, and samples
and holds the reset signal voltage.
‘ The horizontal shift register performs a sequential scan to output the signal voltage and reset signal voltage as serial data. The offset
voltage in each pixel can be eliminated by finding a difference between the signal voltage and the reset voltage with a circuit outside
the sensor.
Then the vertical shift register shifts by one row to select the next row and the operations  to ‘ are repeated.
When the MSP, which is a frame scan signal, goes low after the vertical shift register advances to the 128th row, the reset switches for
all pixels simultaneously turn off and the next frame integration begins.
Structure
Parameter
Image size
Cooling
Number of total pixels
Number of effective pixels
Pixel size
Pixel pitch
Package
Window
Specification
2.56 × 2.56
Two-stage TE-cooled
16384 (128 × 128)
16384 (128 × 128)
20 × 20
20
TO-8 16-pin metal (refer to dimensional outline)
Borosilicate glass with anti-reflective coating
Unit
mm
-
pixels
pixels
μm
μm
-
-
Absolute maximum ratings
Parameter
Symbol
Value
Unit
Supply voltage
Vdd
-0.3 to +5.5
V
Clock pulse voltage
V(MCLK)
Vdd +0.5
V
Start pulse voltage
V(MSP)
Vdd +0.5
V
Operating temperature
Topr
-10 to +60
°C
Storage temperature
Tstg
-20 to +70
°C
TE-cooler allowable current
Ic
0.9
A
TE-cooler allowable voltage
Vc
0.8
V
Thermistor power dissipation
Pth
0.2
mW
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the
product within the absolute maximum ratings.
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