Signal Integrity (SI)
Interconnects operating at high frequency and fast switching rates require thorough signal (SI) and power integrity (PI) analysis to get designs right the first time. Caliber have strong knowledge in SI theory and expertise in simulation tools to analyze various issues like reflection due to impedance mismatch, crosstalk, signal attenuation and PDN noise. The analysis is carried out in the pre and post layout stages at both IC Package/substrate and board levels.
Post Layout Analysis
Simulations of the routed board for potential issues like reflection, overshoot/undershoot, crosstalk, attenuation, EMI and PDN issues. A post layout report is prepared from simulation results along with suggestions for topology modification, termination schemes and layout modification to achieve optimal signal and power integrity.
High Speed Channel Modeling
Modeling services for IC packages, HDI PCBs, Back-planes, Add-in cards, Via breakouts, connectors, socket/pogo pins, probes and cables
Expertise in advanced 3D tools from Ansys & Sigrity enables highly accurate models
End to End / system-level channel modelling and optimization for better performance
Expertise in SERDES design & simulations. Skilled in tuning/using the FFE, CTLE and DFE parameters in IBIS-AMI model based simulations
Maximum speed achieved is 112Gbps (PAM4) in production level. 116Gbps (PAM4) in prototype
PCB/Package - Signal Integrity Analysis
Reflection, ringing and overshoot/undershoot
Single ended and differential crosstalk analysis
Signal attenuation due to IR-Drop, skin-effect and dielectric loss
Channel analysis for serial communication – eye diagram analysis
IBIS/IBIS-AMI based system level simulations
Clock analysis (common & source synchronous)
DDR timing analysis
S - parameter analysis
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Return & insertion loss, NEXT and FEXT analysis
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Mixed mode analysis channel (common & differential)
Coupling analysis – Single and differential
Co - design (IC/package/board)
Power Integrity Analysis (PI)
SSN
IR - Drop
Power distribution network impedance profile
Transient noise estimation
Parasitic RLGC extraction
De-Coupling capacitors estimation and placement optimization
EMI/EMC Analysis
Net - wise radiated EMI
EMC analysis based on FCC, CISPR and VCCI requirement
Interfacing Technologies
Simulation capabilities & experience :
GDDR, DDR 3 & 4, LPDDR4/x, UFS & eMMC
PCIe Gen 3, 4 and 5
MIPI, CSI, HDMI
USB 3.1 & 3.2, SATA, C-phy
SERDES, GbE, SGMII
QSFP/SFP optical modules
Firefly connectors
112 Gbps channel simulation
Up to 100GHz RF channels
Analysis Tools Expertise
Cadence Sigrity
Keysight ADS
Siemens Hyperlynx
Ansys Siwave
Ansys HFSS
HSPICE
Advanced Tools
SYS942 - Clarity IC package extraction suite
SIGR302 - Sigrity power SI II
SYS103 - Celcius power DC
