High Speed Readout for Focal-Plane Array

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-05-M-1897
Agency Tracking Number: F051-223-2543
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solicitation Year: 2005
Solicitation Topic Code: AF05-223
Solicitation Number: 2005.1
Small Business Information
LIGHTSPIN TECHNOLOGIES, INC.
4407 Elm Street, Suite 300, Chevy Chase, MD, 20824
DUNS: 089164565
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Eric Harmon
 Research Manager
 (508) 809-9052
 harmon@lightspintech.com
Business Contact
 David Salzman
Title: President
Phone: (301) 656-7600
Email: salzman@lightspintech.com
Research Institution
N/A
Abstract
A focal-plane array module will be developed including a read-out integrated circuit bump-bonded to a compound semiconductor avalanche photodiode array, supporting 3D imaging for coherent and incoherent pulsed ladars with range resolution finer than 15 cm. The ROIC, already in its fourth generation of optimization, implements a switched-capacitor array at each pixel as a 256-element analog buffer, sampling beyond 1 GSPS with < 200 electrons/sample of noise. Time-shared, 12-bit A/D converters on the ROIC then feed digital data trains out of the module's low-cost package. Merging the ROIC with high-gain APD pixels eliminates the need for preamplifiers, reserving more chip real estate for the sampler buffers. The phase I module will be used to prove that the approach is low risk and promises headroom for further improvement to range resolution, dynamic range, pixel pitch, and pixel count. It will also refine the Phase II specifications for 60 um pixel pitch.

* information listed above is at the time of submission.

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