G11620_15 Datasheet, PDF (1/11 Pages) Hamamatsu Corporation – Single video line (128/256/512 pixels) near infrared image sensor (0.95 to 1.7 μm)

InGaAs linear image sensors
G11620 series
(non-cooled type)
Single video line (128/256/512 pixels)
near infrared image sensor (0.95 to 1.7 μm)
The G11620 series is an InGaAs linear image sensor designed for near-infrared multichannel spectrophotometry. The CMOS
chip includes a charge amplifier, a shift register, and a timing generator circuit. Unlike conventional InGaAs linear image sen-
sors that incorporate two CMOS signal processing chips, the G11620 series uses only one CMOS chip by bump-connecting
it to the InGaAs photodiode array. This structure reduces a difference in the video output that usually occurs between odd-
number pixels and even-number pixels.
The charge amplifier array is made up of CMOS transistors connected to each pixel of the InGaAs photodiode array.
Signals from each pixel are read out in charge integration mode to achieve high sensitivity and stable operation in the wide
spectral range.
The signal processing circuit on the CMOS chip offers two levels of conversion efficiency (CE) that can be selected by the
external voltage to meet the application.
Features
Applications
Low noise, low dark current
Two selectable conversion efficiencies
Anti-saturation circuit
CDS circuit*¹
Built-in thermistor
Simple operation (by built-in timing generator)*²
High resolution: 25 μm pitch (G11620-256DF/-512DA)
Near infrared multichannel spectrophotometry
Radiation thermometry
Non-destructive inspection
*1: A major source of noise in charge amplifiers is the reset noise generated when the integration capacitance is reset. A CDS (correlated
double sampling) circuit greatly reduces this reset noise by holding the signal immediately after reset to find the noise differential.
*2: Different signal timings must be properly set in order to operate a shift register. In conventional image sensor operation, external
PLDs (programmable logic device) are used to input the required timing signals. However, the image sensors internally generate all
timing signals on the CMOS chip just by supplying CLK and RESET pulses. This makes it simple to set the timings.
Selection guide
Type no.
G11620-128DA
G11620-256DF
G11620-256DA
G11620-512DA
Cooling
Non-cooled
Image size
(mm)
6.4 × 0.5
12.8 × 0.5
Number of total pixels
128
256
256
512
Number of effective
pixels
128
256
256
512
Applicable driver
circuit
C11513
Structure
Type no.
G11620-128DA
G11620-256DF
G11620-256DA
G11620-512DA
Pixel size
[μm (H) × μm (V)]
50 _× 500
25 _× 500
50 _× 500
25 _× 500
Pixel pitch
(μm)
50
25
50
25
Package
22-pin ceramic
(refer to the dimensional
outline)
Window material
Borosilicate glass with
anti-reflective coating
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