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M2aD Project, Silicon Porn!

huw finney , Jan 24, 2006; 12:13 p.m.

A slow trickle of parts has been comming my way for the DigitalM project, much thinking and designing has been done, much to do.

I have put 'mad project' in the title at the request of a forumer and here is a picture of the IBIS4 14mpix monochrome no microlens sensor, true silicon porn if ever ther was any...

Silicon Porn!


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huw finney , Jan 24, 2006; 12:14 p.m.

Taken with a cheapy digital camera, yes I have the darn thing in my hands!

Brad - , Jan 24, 2006; 12:19 p.m.

Which ADC you using (and clock rate). And 1 or 2?

huw finney , Jan 24, 2006; 12:35 p.m.


The LTC2884 dual 14 bit, two of them as this chip has four outputs. Using this ADC I can shift the DCs of the sensor and ADC and the range of the ADC to remove the need for extra amplifiers/DC offsetters. Working at 10Msamp/sec as recomended by the sensor datasheet. Other chips are an Altera EP1C6 144TQFP FPGA to do all the clever stuff, a Micron tech MT46V32M16 dram for 'burst' storage, and in the end being put on a MMC Flash card.

An odd veiw of the PCB so far

roger michel , Jan 24, 2006; 01:02 p.m.

why does a compay make a 14MPIX monochrome sensor? what is the target audience for such a device?

Benjamin Shapiro , Jan 24, 2006; 01:07 p.m.

I know little of this electronics stuff, but why MMC?

Benjamin Shapiro , Jan 24, 2006; 01:08 p.m.

Also, when i read of this business with the rock in Russia, I thought of you.

Brad - , Jan 24, 2006; 01:12 p.m.

Huw, do you really mean the LTC2284 (a typo)? That's a very nice device, designed mostly for cellular basestation digital radio use - but should work great in your app - the low power dissipation being a big bonus.

If you're only clocking at 10 MSPS, consider the LTC2295 - similar device, lower clock speed and much lower price. 120 mW at 10 MSPS.

huw finney , Jan 24, 2006; 01:26 p.m.

Roger, no idea but I am pleased they do.

Benjamin, MMC has no license issues, unlike SD. The rock, like it!

Brad, the LTC2284 or somesuch I have got the 25Mss one whatever that is, I always like a bit of headroom and at 25 bucks a piece not bad.

The annoying thing is I had to get all the (special) parts from non UK suppliers (3 USA one Belgium) and hence added quite a few bucks in Fedex/DHL charges.

Patrick Jelliffe , Jan 24, 2006; 01:37 p.m.

Looks like you'll beat the unveiling of the Digital M at PMA!!! Go Huw!

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