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UTC Sensors Unlimited Extended Wavelength InGaAs Linear LSC Series Photodiode Arrays

Product Code:
SU256LSC
Manufacturer: Sensors Unlimited
The high-sensitivity LC-series linear InGaAs photodiode arrays are designed for broad wavelength range, multichannel spectrometer designs.

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The proprietary readout integrated circuit design contains functions that reduce dark current for applications that demand the highest performance. The LSC package provides a "no moving part" solution for vibration resistant, highly calibrated instruments that require long term stability. The LSC series InGaAs linear arrays are available with 256 elements of extended response InGaAs material. Anti-blooming protection prevents charge flow from saturated pixels, allowing for increased intra-scenic dynamic range. The autozero function reduces dark current and non-uniformity, extending the detector’s utility to higher temperatures and longer exposure times. The photodetector arrays are hybridized with CMOS readout integrated circuits (ROIC) of SUI’s exclusive design to offer maximum noise immunity and sensitivity. Operating circuit designs need only provide for one analog supply and three digital control lines for optimum ROIC performance. Four separate gains are selectable with a serial input. The array is available with a two-stage thermoelectric cooler for temperature stabilization and monitoring. SUI LC-Series photodiode arrays are rugged, reliable, and available in volume.

 Benefits:

  • Autozero reduction of pixel variation & dark current
  • Wavelength range of 1.0 µm to 2.6 µm
  • Line rates up to 18.9 klps with 1 ADC and 5 MHz clock in Autozero mode
  • Full Well capacity options from 1.25 to 250 M-electrons
  • Antiblooming protection
  • Serial input for mode control
  • Integrate-while-read for minimum overhead

Features:

  • Wavelength range of 1.0 μm to 2.6 μm
  • Up to 108 pixels per second
  • 1.256 to 2.58 electrons capacity
  • Antiblooming protection
  • Autozero for reduced dark current
  • Serial input for mode control
  • Integrate-while-read for minimum overhead

Commercial Applications:

  • FTIR/NIR Interferometry
  • NIR Spectroscopy
  • Biomedical Analysis
  • Plastic Recycling
  • Industrial Process Control

Electrical Inputs:

Parameter/Description

Unit

Min.

Nom.

Max.

Power supply voltage VDD

V

4.90

5.00

5.25

Power supply ground VSS

V

 

0

 

Digital inputs and clocks, high

V

2.0

5.0

VDD

Digital inputs and clocks, low

 

 

VSS

0.8

Pixel clock frequency

MHz

0.01

 

12.5

Pixel Performance:

 

Feedback

Typical

Typical

Typical

Typical

Capacitor

Gain

Capacity

Read noise1

Dynamic Range

0.1 pF

1.6 μV/e

1.25 Me

800 e RMS

1700:1

1.0 pF

160 nV/e

12.5 Me

1 ke RMS

4300:1

10.0 pF

16 nV/e

125 Me

10 ke RMS

5000:1

20.0 pF

8 nV/e

250 Me

10 ke RMS

5000:1

1 Largest photodiode, autozero off.

 

Photodiode Performance at -20°C:

Photodiode type

2.6 μm, 250 μm

Quantum efficiency (QE) at peak, min.

50%

Dark current, autozero off, max.

2nA

Inoperable pixels, maximum

5%

Photoresponse nonuniformity (PRNU), max.

±10%

Absolute Maximum Ratings:

Parameter

Unit

Min.

Typ

Max.

Power consumption (VDD=5.00 V), 4 outputs, high power mode

mW

 

 

350

Power consumption (VDD=5.00 V), 1 output, low power mode

mW

 

 

135

Operating temperature range

°C

-20

 

+80

Storage temperature range

°C

-20

 

+85

Available Configurations:

Configuration

SU256LSC-2.6T2-0250

Photodiodes

256

Outputs

1, 2, 4

Material

2.6 μm

TEC

Two-stage

Aperture

250 μm

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