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InGaAs linear image sensor



Near infrared sensors (0.9 to 1.85 μm)

G11475 to G11478 series is an InGaAs linear image sensor designed for near infrared multichannel spectrophotometry. These linear image sensors consist an InGaAs photodiode array and charge amplifiers, offset compensation circuit, shift register, and timing generator formed on a CMOS chip. Charge amplifiers are configured with CMOS transistor array and are connected to each pixel of the InGaAs photodiode array. Since the signal from each pixel is read in charge integration mode, high sensitivity and stable operation are attained in the near infrared region. These sensors feature higher data rates and better linearity characteristics at high gain than the previous products. The package is hermetically sealed providing excellent reliability. The signal processing circuit on the CMOS chip enables the selection of a conversion efficiency (CE) from the available two types using external voltage.

- Low noise, low dark current
- Selectable from two conversion efficiency types
- Built-in saturation countermeasure circuit
- Built-in CDS circuit
- Built-in thermistor
- Easy operation (built-in timing generator)
- High resolution: 25 μm pitch

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Image size 12.8 x 0.25 mm
Pixel size 25 x 250 μm
Pixel pitch 25 μm
Number of total pixels 512 pixels
Package Metal
Cooling Two-stage TE-cooled
Line rate (max.) 9150 lines/s
Spectral response range 900 to 1850 nm
Dark current (max.) 20 pA
Measurement condition Typ. Ta=25 ℃, unless otherwise noted Tchip=-20℃

Spectral response


Dimensional outline (unit: mm)


Previous product

Type no. Image size Pixel size Pixel pitch Number of total pixels Line rate max. Spectral response range


12.8 × 0.25 mm 25 × 250 μm 25 μm 512 pixels 1910 line/s 900~1850 nm

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