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New England Photoconductor

Multiplexed Linear Arrays

NEP PbS 256 Pixel Array

Pixel Array


Operating Wavelength 1-3 microns and 2-5 microns
Array Operating Temperature -10°C (TEC cooled and stabilized)
Number of Elements 256
Element Size 40μm2 on a 50μm pitch
Element Height Option Up to 400μm high with the tradeoff of speed
Peak Detectivity Pbs-D*=8 x 1010, PbSe-D*=8 x 109
Response Uniformity ±15% of mean
Programmable Integration Time 10μs to 100ms
Data Acquisition Unit Power 12VDC / 50mA
TEC Controller Power 5VDC / 3A

Linear Multiplexed Array Controller

  • Complete Data Acquisition System
  • USB 2.0 Full Speed Interface
  • 256 pixel arrays supported
  • Integrated TE Cooler Controller with 5mK stability
  • 16 bit A/D Converter
  • Windows DLL Software Interface
  • Compact form factor
  • On board NVRAM remembers last settings
  • External trigger input to control start of integration time
  • FLASH upgradeable rmware

The Array Controller is a complete acquisition system for use with the NEP 256 channel photo conductive readout integrated circuit. The on board microcontroller provides all signals needed to operate the array. Operation and calibration of the per pixel dark current skimmers is handled by the DLL and the array microcontroller. Physically the Controller is designed to attach to a standard 28 pin tub package (pictured in right column). The dual board system separates the acquisition function (upper board) from the TE cooler controller (lower board).

Data Acquisition Unit

  • 16 Bit
  • 2.5V signal swing
  • 12 VDC 50mA supply required
  • Up to 60 frames per second
  • Digitally controlled integration time 10μs to 100ms
  • Crystal controlled time base
  • External trigger input
  • Micro USB Connector

TE Controller Unit

  • Analog PWM controller for high efficiency
  • 2.5 A peak current
  • 4.1 V peak voltage
  • Requires 5VDC supply at 3A
  • 5mK temperature stability
  • LC lter creates DC conditions across TE element
  • Bidirectional drive (heats and cools)
  • Set Point digitally controllable
  • Self-moitoring for thermal runaway; with auto shut down

Multiplex Array