Prof. Mark Lyndon Prydderch Profile

Prof. Mark Lyndon Prydderch

Senior Engineer at STFC Rutherford Appleton Lab

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Publications (9)

Proceedings Article | 6 July 2018 Paper

A pair of custom ASICs for bias generation and clock buffering in space-based CCD camera systems

Q. Morrissey, S. Bell, L. Jones, M. Prydderch, M. Torbet, N. Waltham, M. Clapp

Proceedings Volume 10709, 107092T (2018) https://doi.org/10.1117/12.2312623

KEYWORDS: Clocks, Capacitance, Charge-coupled devices, Imaging systems, Power supplies, Transistors, Multiplexers, CCD cameras, Radiation, Space sensors

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A pair of radiation hardened high-voltage mixed signal Application Specific Integrated Circuits (ASICs) are described that provide the biasing and clocking functions required to drive large format CCDs used for space-borne cameras and focal planes. The use of these ASICs allows the CCD drive electronics to be realised in a compact and energy efficient manner saving volume, mass, and power when compared with traditional space-qualified discrete implementations. The STAR ASIC provides 24 independent voltage outputs with a 32.736V range at 10 bit resolution and with <100μV noise. Each voltage output provides a drive current of up to +/-20mA and is stable for capacitive loads of up to 10μF. An on-board telemetry system featuring a 12-bit ADC and programmable gain buffer allows internal monitoring of the output voltages plus up to 32 single ended and 4 differential external voltages, such as from PRT bridge circuits for temperature monitoring. A simple SPI serial interface provides control and telemetry read back, while all required voltages and currents are generated from internal bandgap circuits. The COMET ASIC provides 6 fully independent clock buffering channels each with individually programmable rising/falling current drive and high/low voltage levels. Output voltage levels are controlled with integrated fast response regulators that operate over a 16.368V range without the need for external decoupling capacitors. Clock drive currents can be adjusted for the load capacitance and output slew rate required over a 409.6mA range, with edge speeds <15ns achievable for small loads. Setup and control of the ASIC is also via an SPI interface with integrated safety features to ensure correct sequencing of channel operation and to prevent reverse biasing of the driver programmable voltage supplies. The COMET ASIC also features an under-voltage lock out circuit to safeguard the chip in the event of unexpected power loss. All necessary biases are generated internally and only supply decoupling, a single filtering capacitor, and a resistive divider are required to operate the device. Both devices have been designed in a commercial 0.35μm 50V tolerant HV CMOS technology using Triple Module Redundancy (TMR) and established layout techniques to harden against Total Ionising Dose (TID), Single Event Upset (SEU), and Single Event Latch-up (SEL) radiation effects. The latch-up detection circuits often needed for space electronics are therefore not required for either ASIC. Details of the architectures and circuit implementations of both ASICs will be presented. Test results from manufactured devices will be shown under representative load conditions.

Proceedings Article | 20 May 2009 Paper

Programmable active pixel sensor to investigate neural interactions within the retina

Matthew Hart, Mark Prydderch, James Morrison, Derek Murdoch, Keith Mathieson

Proceedings Volume 7365, 736504 (2009) https://doi.org/10.1117/12.821624

KEYWORDS: Neural networks, Sensors, Retina, Photodiodes, Visualization, Electrodes, Capacitors, Clocks, Active sensors, Eye

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SPIE Journal Paper | 1 December 2007

Characterization studies of two novel active pixel sensors

Sarah Bohndiek, Costas Arvanitis, Gary Royle, Robert Speller, Andy Clark, Jamie Crooks, Mark Prydderch, Renato Turchetta, Andrew Blue, Val O'Shea

OE, Vol. 46, Issue 12, 124003, (December 2007) https://doi.org/10.1117/12.10.1117/1.2818224

KEYWORDS: Sensors, CMOS sensors, X-rays, Scintillators, Image segmentation, Active sensors, Image sensors, Optical engineering, X-ray optics, Modulation transfer functions

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Proceedings Article | 17 September 2007 Paper

Development of a thinned back-illuminated CMOS active pixel sensor for extreme ultraviolet spectroscopy and imaging in space science

Nicholas Waltham, Mark Prydderch, Helen Mapson-Menard, Matthew Clapp, Peter Pool, Andrew Harris

Proceedings Volume 6690, 669007 (2007) https://doi.org/10.1117/12.733522

KEYWORDS: Sensors, Back illuminated sensors, Transistors, Quantum efficiency, CMOS sensors, Capacitance, Extreme ultraviolet, Photodiodes, Imaging spectroscopy, Electrons

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Proceedings Article | 9 February 2007 Paper

Optical and x-ray characterization of two novel CMOS image sensors

Sarah Bohndiek, Costas Arvanitis, Cristian Venanzi, Gary Royle, Andy Clark, Jamie Crooks, Mark Prydderch, Renato Turchetta, Andrew Blue, Robert Speller

Proceedings Volume 6471, 647113 (2007) https://doi.org/10.1117/12.700581

KEYWORDS: Sensors, CMOS sensors, X-rays, Modulation transfer functions, Scintillators, X-ray optics, X-ray imaging, Tissues, Diffraction, Quantum efficiency

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Proceedings Article | 6 February 2006 Paper

A CMOS active pixel sensor for retinal stimulation

Mark Prydderch, Marcus French, Keith Mathieson, Christopher Adams, Deborah Gunning, Jonathan Laudanski, James Morrison, Alan Moodie, James Sinclair

Proceedings Volume 6068, 606803 (2006) https://doi.org/10.1117/12.641165

KEYWORDS: Sensors, CMOS sensors, Retina, Neural networks, Electrodes, Clocks, Field programmable gate arrays, Capacitors, Amplifiers, Photodiodes

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Proceedings Article | 7 June 2004 Paper

A large-area CMOS monolithic active pixel sensor for extreme ultraviolet spectroscopy and imaging

Mark Prydderch, Nick Waltham, Quentin Morrissey, Marcus French, Renato Turchetta, Peter Pool

Proceedings Volume 5301, (2004) https://doi.org/10.1117/12.526401

KEYWORDS: Sensors, Photodiodes, CMOS sensors, Silicon, Transistors, Imaging spectroscopy, Extreme ultraviolet, Oxides, Switches, Etching

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Proceedings Article | 6 October 1999 Paper

Two approaches to hybrid x-ray pixel array readout

Paul Seller, Greg Bale, William Gannon, G. Hall, Andrew Holland, Gregory Iles, Anthony Jorden, Barrie Lowe, P. Murray, M. Passmore, Mark Prydderch, K. Smith, Stephen Thomas, Richard Wade

Proceedings Volume 3774, (1999) https://doi.org/10.1117/12.367120

KEYWORDS: Sensors, X-rays, Silicon, Imaging spectroscopy, Semiconducting wafers, X-ray detectors, X-ray imaging, Spectroscopes, X-ray diffraction, Oxides

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Proceedings Article | 10 November 1998 Paper

Silicon pixel detector for x-ray spectroscopy

Paul Seller, William Gannon, Andrew Holland, Gregory Iles, Barrie Lowe, Mark Prydderch, Stephen Thomas, Richard Wade

Proceedings Volume 3445, (1998) https://doi.org/10.1117/12.330319

KEYWORDS: Sensors, Silicon, X-rays, Semiconducting wafers, X-ray detectors, Integrated circuits, Electronics, Logic, Ceramics, Aluminum

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Showing 5 of 9 publications

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