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iC - DRBZ Electronic Passive Floating Gate Dosimeter for TLD Applications

IP.com Disclosure Number: IPCOM000246180D
Publication Date: 2016-May-13
Document File: 2 page(s) / 313K

Publishing Venue

The IP.com Prior Art Database

Related People

Álvaro Pineda García: AUTHOR

Abstract

iC-DRBZ is a silicon radiation sensor based in floating gate principle. Sensor output is a frequency modulated pulse train proportional to the charge at the floating gate. iC-DRBZ implements on-chip a very low noise signal amplification technique reducing the need of deep gate discharge and allowing a sensor operation in the linear zone. Sensor linearity and resolution are this way enhanced. Temperature effects are internally compensated but if a higher precision is needed, a reference frequency output is provided allowing the micro controller to cancel any temperature offset using a predefined look-up table. In addition, the FG and the reference equivalent frequencies can be read directly via the serial interface as a digital word. A RFID or One wire communication are possible on Request. The chip is suitable to be integrated on standard TLD based Dosimeter as redundant dosimeter or for alarm or warning purposes or as stand alone dosimeter. An on-chip digital thermometer provides information about the system temperature.

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Page 01 of 2

iC-DRBZ

Electronic Passive Floating Gate Dosimeter for TLD Applications

13/05/16

Rev. A1.0 Page 1/16

FEATURES

APPLICATIONS

◊ Sensitivity up to 0.3 mGy. (30 mrad) ◊ Aero-spatial Dosimetry

◊ Automatic rechargeable floating gate sensor

◊ Passive and Active Gamma radiation dosimetry

◊ Sophisticated linearity enhancement technique

◊ Redundancy to standard TLD based Dosimeters

◊ Interface for Micro-controller applications ◊ Early alarm indication

◊ Total Ionyzing Dose Detection Up to 250 Gy

                                      ◊ Stand-alone dosimeter. ◊ Programmable Sensitivity from 0.5 kHz/Gy up to 20
kHz/Gy
◊ Dose Rates up to 5 Gy/h
◊ Passive measurement.
◊ External Supply or RFID Supply & Communication.

PACKAGES

◊ COB or QNF32 Packaging
◊ less than 10g in weight
◊ One Wire Communication on Request

 QFN32 DIL 16 5 x 5 mm

2 Sensors

BLOCK DIAGRAM


Page 02 of 2

iC-DRBZ

Electronic Passive Floating Gate Dosimeter for TLD Applications

13/05/16

Rev. A1.0 Page 2/16

DESCRIPTION

iC-DRBZ is a silicon radiation sensor based in floating gate principle. Sensor output is a frequency modulated pulse train proportional to the charge at the floating gate.

iC-DRBZ implements on-chip a very low noise signal amplification technique reducing the need of deep gate discharge and allowing a sensor operation in the linear zone. Sensor linearity and resolution are this way enhanced.

Temperature effects are internally compensated but if a higher precision is needed, a reference frequency output is pr...