Advance Information - 291330

Plessey Semiconductors Ltd.

Tamerton Road, Roborough, Plymouth, Devon, United Kingdom PL6 7BQ

Tel: +44 1752 693000

Fax: +44 1752 518030

1

CMOS Image Sensor PS50276

Advance Information

Advance Information – 291330

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> Main Features

3-T Pixel Architecture

0.35 µm CMOS

18.5 µm x 18.5 µm Pixels

1920 pixels x 1440 pixels

2.760 MPixels

Sensor size 37.30mm x 27.30mm

3.3V Power Supply

Rolling Shutter

0.6 fps at full resolution

Power Consumption: 1200 mW

Spectral response 0.24A/W

Resolution >20lp/mm

Full Well Charge 750k electrons

Linear Range 600k electrons

Temporal Noise 13 electrons RMS

Dynamic Range 95dB

Dark Current 200 e-/s

Fixed Pattern Noise (local) <0.20%

PRNU (local) <10%

Pixel crosstalk < 20%

Intraoral dental imaging

Different sizes available on request

> Applications

> Description

The PS50276 is a solid state CMOS image sensor for use

in intra-oral dental imaging applications. The sensor has a

35.52mm x 26.64mm active pixel array which utilises off

chip clock, ADC and signal processing to increase the

radiation tolerance of the system. It features a 3-T pixel

architecture to provide a rolling shutter and utilises double

sampling to reduce readout noise. The sensor is

chamfered by 45 degrees on two corners, by 158x158

pixels. The system clock is 20MHz, facilitating with a full

resolution frame rate of more than 0.6 frames per second.

Dose control is achieved using an X-ray irradiation

monitoring photo diode. The sensor is mounted on a PCB

and has a scintillator mounted on an optical fibre plate.

Data output is analogue.

The sensor is packaged on a PCB with a 14-bit ADC and

LVDS output.