G9211 to G9214/G9205 to G9208 series InGaAs linear image sensors are specifically designed for near infrared multichannel spectrophotometry.

These linear image sensors consist of an InGaAs photodiode array, a charge amplifier array, an offset compensation circuit, a shift register and a

timing generator formed on a CMOS chip. 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 near

infrared spectral range. The package is hermetically sealed for high reliability.

Signal processing circuits on the CMOS chip allow selecting a feedback capacitance (Cf) of 10 pF or 0.5 pF by using an external voltage input.

The image sensor operates over a wide dynamic range when Cf=10 pF and delivers high gain when Cf=0.5 pF.

IMAGE

SENSOR

InGaAs linear image sensor

Near infrared image sensors (0.9 to 1.67 µm / 2.55 µm)

G9211 to G9214/G9205 to G9208 series

Features

512 ch: 2 video lines

Applications

l Near infrared multichannel spectrophotometry

l Radiation thermometry

l Non-destructive inspection

Related products

l InGaAs multichannel detector head C8061-01, C8062-01

l Multichannel detector head controller C7557

0.5

1.0

1.5

2.0

2.5

3.0

0

0.5

1.0

1.5

(Typ.)

T=25 ˚C

T= -10 ˚C (G9208-256W: T= -20 ˚C)

G9211 TO

G9208-256W

s Spectral response

KMIRB0022EA

*1: CDS (Correlated Double Sampling) circuit

A major source of noise in charge amplifiers is the reset noise gen-

erated when the integration capacitance is reset. A CDS circuit greatly

reduces this reset noise by holding the signal immediately after re-

*2: Timing generator

Different signal timings must be properly set in order to operate a

shift register. In conventional image sensor operation, external PLDs

(Programmable Logic Devices) are used to input the required timing

signals. However, G9211 to G9214/G9205 to G9208 series 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.

*3: Percentage of defective pixels

If your application requires sensors with no defective pixels, please

select G9201 series.

1

s Selection guide

Type No.

Cooling

Num ber of

pixels

Pixel pitch

(µm )

Pixel size

[µm (H) × µm (V)]

Spectral

response range

(µm )

Defective

pixel

G9211-256S

256

50

50 × 250

G9212-512S

512

25

25 × 250

G9213-256S

256

50

50 × 500

G9214-512S

One-stage

TE-cooled

512

25

25 × 500

0.9 to 1.70

1 % Max. *

3

G9205-256W

0.9 to 1.85

G9206-256W

0.9 to 2.05

G9207-256W

0.9 to 2.25

G9208-256W

Two-stage

TE-cooled

256

50

50 × 250

0.9 to 2.55

5 % Max.