1 / 10

ELMB++ ??

ELMB++ ??. A. Marchioro PH-ESE/ME. Agenda. Introduction Potentially interested participants Topics How many ELMBs they are currently in use and for which applications List of features used/not used Requirements in terms of radiation hardness

uriah-hale
Download Presentation

ELMB++ ??

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ELMB++ ?? A. Marchioro PH-ESE/ME

  2. Agenda • Introduction • Potentially interested participants • Topics • How many ELMBs they are currently in use and for which applications • List of features used/not used • Requirements in terms of radiation hardness • Preliminary wish-list for new functionalities, interfaces etc. • Potential manpower/resources that could be providedby CERN and non-CERN members for a common effort (hardware and software).

  3. Why are we here ? • This meeting is organized solely to gather information concerning the possibility of building a RH version of the ELMB satisfying the need of a large community of users • To see whether there is enough interest among users to build a new RH version of the ELMB • To see if anyone is interested to come up with a broad proposal • To see if anyone could inject resources in the project if launched

  4. Current Version Functionality ATM128ega Processor 64 Analog Channels CAN network interface

  5. Presentations • Atlas wish-list • …

  6. Options • Replace Processor: • with RH version in FPGA • ASIC-RH versions of ATMega • ASIC-RH version of other microcontroller • ASIC-RH version of 32 bit micro (ESA-Sparc) • ADC • Downgrade ADC to 12/14 bit • Interfaces • Keep CAN and add WorlFIP • Keep CAN and add new hooks to enable Ethernet 100MB later • Local control • Add more digital IOs and have just one ELMB version (A + D)

  7. Options (cntd) • Keep 5V external powering and add local DC/DC • Redefine external powering to 2.5 V

  8. Processor issues • Flash memory is hard (impossible) to obtain in RH process • Booting procedure must be modified • Many internal peripherals in Atmel version; are they all used/necessary? • Is the current firmware using precise timing loops determined by current implementation? • How hard would it be to port the existing firmware to another processor?

  9. ADC Issues • CMS uses ~30,000 12/14 bit, 7 channels ADCs with I2C interface (0.25 um CMOS) • New 32 channels version is being finalized in 130nm • Temp sensor included • Range 0 to 1 V input • 16 bit is hard to get • Bandgap stability issues • General degradation with radiation • Calibration • … DCU25F

  10. GBT-SCA ADC new converter • 12-bit ADC • Dual-slope architecture • Single supply voltage: VDD = 1.2 V -8% to 1.5 V +8% • Reference clock frequency: 40 MHz • Max. conversion rate: ≈3.5 KHz (Max conversion period = 2*212*25ns) • Operating temperature: -30°C to +80°C • Input range: GND < Vin < 1 V • LSB (least significant bit) = 244 µV • Input channels: • 32 + 1 Temperature = 33 • Power consumption • 350uA @ 1.2 (420uW analog part ) • 130nm technology

More Related