LONDON Foundry Tower Semiconductor (Migdal Ha’emek, Israel) has started making, on its 0.18 micron CMOS process, reconfigurable linear image sensors for Panavision Imaging that are said to be the fastest of its type.
The DLIS-2K line scan sensors were developed using Tower's photo diode pixel process (APD) and pixel IP with Panavision's proprietary imager architecture.
The quad line sensors with 11-bit A/D and Correlated Multi-Sampling (CMS) for enhanced sensitivity are targeted for use in spectroscopy, barcode, touch screen, OCR, machine vision, measurement, and similar applications.
The design provides ambient light subtraction, oversampling, non-destructive read mode, binning of different integrations, auto-thresholding and a high resolution mode with a 120MHz pixel readout.
The DLIS-2K sensors have ambient light subtraction in combination with up to 12-bit digitisation and auto-thresholding. The companies say this provides a simple binary output on chip, allowing removal of many of the system components for barcode, touchscreen or any application that needs to locate a position or a centroid.
"Our goal is to address the expanding bar code and touch screen markets with a programmable image sensor at a highly competitive price point," commented Jeffrey Zarnowski, CTO for Panavision Imaging LLC(Homer, NY).
"The close interaction between our design team and Tower's engineers helped us to achieve quick ramp to production", Zarnowski added.
Tower says using its process allowed for on-chip, bit-selectable, A/D conversion as well as higher data transfer rates than could be achieved with previously available sensors.
The APD process and pixel IP are said to exhibit improved charge transfer characteristics for a higher sensitivity over standard photodiodes.