Extended InGaAs Detector Now Available as Line Array
We present the IG22X0103L28-256TEC, an x-InGaAs line sensor for SWIR spectroscopy.
This array has 256 pixels @ 30 µm x 250 µm each with a pitch of 50 µm. In cooled operation, the spectral range is covered up to 2.1 µm (20% point).
Why you should test it!
The reason to integrate a sophisticated extended InGaAs detector in this complex product lies in its technological advantages.
These advantages are detailed as follows:
- Auto-zero function for dark current reduction.
The dark current in photodiodes depends on the bias voltage applied. Thus, voltage-free operation is ideal; realistically, however, the input offset of the amplifier acts as bias voltage. In the IG22 array, this undesired voltage is reset to zero after each readout. - Amplification.
The amplification can be finely adjusted at eight levels, individually per pixel. This is practical because the middle of the line is often illuminated more strongly than its edges. Thus, the optimal dynamic range per pixel can be utilized. - This array is designed with a high linearity.
The aim is a value of 99.9%. - Optimized thermal design.
This array, which is equipped with a two-stage Peltier element, achieves a dT of 65 K (i.e., it can be cooled from room temperature to -40°C). - Integrated low-pass filter.
An anti-alias low-pass filter is integrated before the sample-and-hold circuit.
Furthermore, this array is equipped with all commercial standard features, such as correlated double sampling (CDS). Complete evaluation electronics are available with a USB interface.
