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Analog Devices DSP Collaborative

Texas Instruments DSP Developer Network
 

 

  
Cryogenic Preamplifier

bullet Optical sensing applications
bullet < 1 nV/rt-Hz input referred noise with high-impedance FET input stage
bullet > 5 MHz bandwidth with large detector capacitance
bullet Integrated temperature control loop
bullet Precision input bias voltage control
bullet 80°K Operation
bullet Differential or single-ended output

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Dual Pulse Processor, DPP-26

Charge Collection for High Dynamic Range Pulse Applications

bullet Captures sequential laser pulse signal from PMT
bullet Combines analog and DSP functions to achieve overall specifications
bullet Dual 30 ns box car integrations separated by 250 ns minimum (adjustable)
bullet > 100 dB dynamic range
bullet Timing and triggering parameters set through PC interface
This complete charge acquisition system has a single channel for input charge collection. Precise onboard timing circuitry enables dual charge integration windows on a single input channel. Dynamic range exceeds 90 dB with 10 MHz input bandwidth. The onboard DSP can be used to discriminate and filter events in real-time.

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Miniature Laser Pulse Driver

Vtech has developed a miniature laser pulse driver that efficiently produces 16 amp pulses at 2 MHz repetition rate. Pulse widths can be less than 10 ns FWHM (full width half maximum). Applications include pulse drivers for quantum cascade lasers (QCL).

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HARLIDS Tank Mounted Laser Warning System

Vtech designed, fabricated, and tested a complete electro-optical laser warning prototype system for field trials on a battle tank. The electronics consisted of a mixed signal laser warning receiver set and computer interface. The electronics detected short, low-power pulses from a multi-element photodiode array to determine the incident angle of a received laser signal. A laptop computer interface, cabled to two EO sensor array assemblies, read the digitized sensor data, logged the events using an IRIG generator, and reported alarms when laser pulse sources of the correct signature were detected..

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Missile Warning Sensor

Vtech has developed electronics to read and control an electronic imager for an optically based missile warning sensor. The sensor is part of an overall IR countermeasures system designed to protect fighter aircraft from missile attack. The electronics also contain sophisticated analog temperature compensation circuitry to correct the imaging output at elevated temperatures. The sensor is qualified over the full military temperature range of -55°C to +125°C for the CMWS program (AN/AAR-57). Wrap around rigid flex technology was utilized to fit the electronics into the approximate form factor of a coffee cup.

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Light Particle Detector (LPD)

The LPD detects and energy analyzes higher energy protons (1 to 150 MeV), electrons (0.3 to 10 MeV), alpha particles (7 to 640 MeV), and heavy ions (2 to 30 MeV/nucleon). Vtech worked closely with Physical Sciences Inc. (PSI) to develop the electronics for this space based particle energy spectrometer. The system contains PMTs and their associated bias and low noise readout electronics, as well as a complex space rated FPGA. The system is currently orbiting the earth and performing its mission.

For further information regarding Vtech’s electronic system design capabilities, please send inquiries to info@vtechcorp.com.

Copyright 2010 – Vtech Engineering Corporation – All Rights Reserved

 
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