I need to have a flex cable between the DMD and the Lightcrafter controller Board. I was planning on removing the middle board with the Aces connector on it and plugging into the Panasonic connector on the back of the DMD with support. What is the best way to do this?
I am still researching and will answer you in couple of days. Thanks for your patience.
Unfortunately, a commercial cable does not exist for this particular chipset. You will have to develop a custom cable and a PCB connector to match your specific requirements. I will be glad to help you with the design layout. Can you give me some background on your applicatiion, so I can help you better.
What we are trying to do is add a flex cable about 2 or 3 cm long going from the back of the DMD to the lightcrafter kit. I have the document that provies the signal matching requirements. I'm just wondering what is the best way to layout the flex?
Here are some recommendations for the DMD flex cable:
DMD_VCC traces at leas 0.05" wide. Combined they carry up to 50mA current (average). Up to 2.25A current spikes from decoupling capacitors. Ideally DMD_VCC can be a power plane.
VREF, VOFS, VRST, VBIAS traces at least 0.015" wide. They carry up to 2mA currents (average). Up to 600mA current spikes from decoupling capacitors. Make these traces wider if possible.
Signal traces at least 0.003" wide and have a 50 ohms +/- 10% matched impedance. Make these traces wider if possible. Minimum of 2X distance between the signal traces. Ideally, 3X distance between them, wherever possible, compared to signal trace width. Place ground traces between DMD_Dx signal traces wherever possible.
Use top layer for the DMD_VSS ground plane at the connector.
0.1uF decoupling capacitors are placed on the bottom layer as close as possible to their respective connector pins (DMD_VCC, VREF, VBIAS, VOFS, VRST). At least two 0.1uF decoupling capacitors for DMD_VCC. Add extra capacitor footprints between other DMD_VCC pins and DMD_VSS if space permits. Capacitors with smallest footprints are chosen in order to fit the DMD flex and for lowest ESL.
Thanks for the advice Pedro I will give this a try.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.