Product category:
Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: AD9891
Edited by the Electronicstalk Editorial
Team on 16 April 2002
CCD processor combines front end and
timing in one
The AD9891 CCD signal processor combines a 10bit 20Msample/s analogue front end with a programmable timing generator that uses the proprietary Precision Timing core architecture.
The AD9891 CCD signal processor combines a 10bit 20Msample/s analogue front end with a programmable timing generator that uses the proprietary Precision Timing core architecture It gives manufacturers more flexibility in designing CCD-based digital still cameras, allowing them to offer a variety of image resolutions, reduce camera size, and lower part costs - and to rapidly introduce a series of cameras based on the same components and PCB layout, but with different CCDs
This article was originally published on Electronicstalk on 2 Jul 2008 at 8.00am (UK)
Related stories
A/D convertor measures smaller signals faster
Sigma-delta ADC achieves greater than true 16bit noise-free resolution up to 2.4kHz across all input voltages from 40mV to 5V.
SAR convertor claims record speed and accuracy
A/D convertor achieves a new level of 16bit data capture performance, with best-in-class 15bit ENOB and 10Msample/s throughput.
This is a significant improvement over devices based on fixed-function timing generators, which require the designer to alter components and PCB layout each time a different CCD is used.
The AD9891 also allows digital still camera manufacturers to improve the performance of their imaging applications by dramatically reducing EMI concerns, digital coupling and fixed-pattern noise.
In addition, it is also robust enough to remain stable within a wide range of temperatures - working over an extended temperature range of -20 to +85C - assuring designers that performance will not be affected by environmental variables.
The Precision Timing core offers +/-1ns clock programmability, which enables the timing generator to precisely control all of the clocks necessary to drive a CCD: H-clocks, V-clocks, sensor gates, blanking and all internal AFE clocks.
This control over frame and pixel placement, as well as strobe and shutter timing, enables users to achieve exceptional performance in their CCD imaging applications.
These capabilities - which would not be possible using the typical two-chip combination of an AFE with a separate fixed-function timing generator - make the AD9891 especially useful in a variety of imaging applications in which image quality is essential to job function, such as medical imaging, microscopy, industrial/machine vision, digital photography, biometrics, and automatic inspection equipment.
The AD9891 is priced at $7.55 per unit in 1000-piece quantities and is available now in a 64-ball BGA package.
• Analog Devices: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
