1. LVDS Project: A RAD-HARD 500 Mbps LVDS Bus for Space June 12-16, 2016
AMICSA & DSP DAY 2016 1

2. Agenda Introduction to the LVDS project
LVDS Octal Repeater Characterization/Radiation Results
LVDS Octal Repeater Evaluation Status
LVDS – AMICSA & DSP DAY 2016

3. Introduction to the project - General
LVDS project is an ESA funded project for the development of a European LVDS family for Space
Phase 1: Preliminary design of a LVDS Octal Repeater
Phase 2: Detailed Design, Manufacturing and Characterization of the LVDS Octal Repeater
Phase 3: ESCC Evaluation of the improved LVDS Octal Repeater
LVDS – AMICSA & DSP DAY 2016

4. Introduction to the project – Suppliers
SOFICS: ESD Designer of Protection Cells
IHP: Wafer Manufacturer in SGB25RH Technology
HCM: Assembly House
ALTER: Testing House
LVDS – AMICSA & DSP DAY 2016

5. Introduction to the project – Main Milestones
Project started: April 2012
End of Phase 1: August 2013
End of Phase 2: October 2015
Phase 3 CDR: January 2016
Phase 3 Tape-out: February 2016
Phase 3 Assembly: July 2016
Phase 3 Evaluation Testing: Q3 2016
Project ends: Q1 2017
LVDS – AMICSA & DSP DAY 2016

6. Introduction to the project – Features
Key features of the octal LVDS repeater:
3,3V single Power Supply
Cold Sparing
500Mbps
Fail safe mode
Low Channel to Channel Skew
Tri-state output control
Extended receiver Common mode
ESD 8kV
Radiation Hardness 300kRad, SEL free and BER=1E-13Err/day/bit
LVDS – AMICSA & DSP DAY 2016

7. LVDS Octal Repeater Results – Electrical Charact.
Test Set-up at ALTER:
LVDS – AMICSA & DSP DAY 2016

8. LVDS Octal Repeater Results – Electrical Charact.
Fulfillment of Project requirements and generic requirements of ANSI/TIA/EIA-644 apart for following electrical parameters:
Parameters
Description
Measured Value
Spec. Limit
VTH
LVDS Input Voltage Threshold
135mV
<100mV tP
Propagation time
5,5ns
<3,5ns
VOD
Differential Output Voltage
565mV
@-55ºC only
<453mV
ICS
ICSOUT
ICSIN
Cold Spare Leakage currents
<20uA
IOZ
Output Tristate Current
15uA
<10uA
JRMS
Jitter rms
20ps
<15ps
LVDS – AMICSA & DSP DAY 2016

9. LVDS Octal Repeater Results – SEE
According to ESCC25100 Standard
Heavy Ion Test at UCL HIF facility with 4 ions (4 LET Energies)
No sensitivity to Latch-up
up to 62.5MeV.cm2/mg
No sensitivity to SEU/SET
up to 20MeV.cm2/mg
15 bit errors
after 1E12 transmitted bits
at 62.5MeV.cm2/mg
LVDS – AMICSA & DSP DAY 2016

10. LVDS Octal Repeater Results – TID
According to ESCC22900 Standard
Total Ionizing Dose (Co60 Source) at RADLAB facility at LDR of 220Rad/h
=> No sensitivity to Total Dose up to 300kRad (Highest Tested Dose)
LVDS – AMICSA & DSP DAY 2016

11. LVDS Octal Repeater Results – ESD
According to ESD JEDEC Standards (JS , JESD22-A115-A and JESD22-C101-C)
ESD Pulses at ALTER Installation with HBM, MM and CDM Models
=> No sensitivity to ESD up to:
±8KV with HBM ESD model
±250V with MM ESD model.
±500V with CDM ESD model
Note that ESD TLP Test Performed on wafer at IHP demonstrated forehand the robustness of ESD cells developed by SOFICS (>7kV) .
LVDS – AMICSA & DSP DAY 2016

12. LVDS Octal Repeater Evaluation – Status
Design Modification to Improve Electrical parameters
Selection of a Suitable CQFP48 Package for Space
Complete Wafer Manufacturing Run and Assembly in course at HCM
The Evaluation tests (Based on ESCC ) will consider:
Thermal Step-Stress
SEE Radiation
TID Radiation
Construction Analysis
Package Test
ESD
Endurance Tests
LVDS – AMICSA & DSP DAY 2016

13. dgonzalez@arquimea.com jlopez@arquimea.com arquimea_012 arquimea_026
LVDS – AMICSA & DSP DAY 2016