Skip to main content

VLSI Packaging Evolution and Innovations

Hello Dear Readers,   Today in this post, I will provide some deep insight into the VLSI packaging evolution and innovations. Semiconductor packaging has evolved from a simple protective housing into a critical performance enabler. In the modern VLSI landscape, packaging is no longer an afterthought; it is a fundamental determinant of PPA (Power, Performance, and Area) metrics, often dictating the thermal limits and signal integrity of the final SoC. 1. Traditional Packaging Technologies: These methods are the workhorses of the industry, widely used for low-to-medium complexity devices where cost-efficiency is paramount. Wire Bonding (QFN, QFP, DIP): Wire bonding is the most mature interconnection technology. It uses thin gold, copper, or aluminum wires to connect the die's bond pads to the package's internal leadframe. Implementation: The die is attached face-up to a leadframe or substrate. A wire bonder uses thermocompression or ultrasonic energy to attach wires betwee...
Post a Comment

SRAM/Memory CAD Engineer at Qualcomm

 Hello Dear Readers,

Qualcomm Bangalore currently has a vacancy for an SRAM/Memory CAD Engineer.

As a leading technology innovator, Qualcomm pushes the boundaries of what's possible to enable next-generation experiences and drives digital transformation to help create a smarter, connected future for all. As a Qualcomm Hardware Engineer, you will plan, design, optimize, verify, and test electronic systems, bring-up yield, circuits, mechanical systems, Digital/Analog/RF/optical systems, equipment and packaging, test systems, FPGA, and/or DSP systems that launch cutting-edge, world class products. Qualcomm Hardware Engineers collaborate with cross-functional teams to develop solutions and meet performance requirements.

Minimum Qualifications:

• Bachelor's degree in Computer Science, Electrical/Electronics Engineering, Engineering, or related field and 3+ years of Hardware Engineering or related work experience.
OR
Master's degree in Computer Science, Electrical/Electronics Engineering, Engineering, or related field and 2+ years of Hardware Engineering or related work experience.
OR
PhD in Computer Science, Electrical/Electronics Engineering, Engineering, or related field and 1+ year of Hardware Engineering or related work experience.

Roles and Responsibilities:

· Work closely with CAD and custom macro/memory design leads to understand the design methodology and high level requirements and develop flows.

· Develop efficient analysis and model generation methodologies for timing and noise to achieve tight correlation.

· Determine key areas where automation and leading methodologies can help improve PPA.

· Define, innovate and implement new infrastructure capabilities that can be used to accelerate design and development, and improve user experience.

Preferred qualifications:

· Strong skills in transistor level signoff tools for timing, emir, simulations, extraction and IPQA.

· Experience in flow development at high scale (multithreading, ml capabilities, hyperscaling, schedulers, filer hot-spot management etc.).

· Direct experience with efficient visualization tools to analyze results, log parsers, web views, error/warning scanners etc.

· Strong fundamentals in scripting languages (python, tcl, sh. others), automation, general purpose CAD infrastructure and flows.

· Good understanding of stdcell or memory design fundamentals.

· Excellent partner collaborating with design team in flow debug and support.

· Experience with signing off accuracy and correlation of analysis flows (compare to spice, foundry models, etc.)

· Tool knowledge in any of these is a plus – nanotime, xa/spectre, liberate, primelib, totem


Comments

Post a Comment

Popular posts from this blog

Signal Electromigration (Signal EM): Violations, Examples, and Practical Fixes

  Hello Dear Readers,   Today in this post, I will provide some deep insight into the Signal Electromigration (Signal EM): Violations, Examples, and Practical Fixes. 1. Introduction: As technology nodes shrink into the deep‑submicron and nanometer regime (7nm, 5nm, 3nm and beyond), electromigration (EM) has become a first‑order reliability concern—not only for power/ground (PG) networks but also for signal nets. Signal EM failures are often underestimated because signal currents are transient and bidirectional. However, with higher switching activity, tighter metal pitches, thinner wires, and aggressive timing closure, signal EM can cause latent or early‑life failures if not addressed properly. This article explains: What Signal EM is and how it differs from PG EM Typical Signal EM violation scenarios Detailed, practical examples Root causes behind each violation Proven solutions and best practices to fix and prevent Signal EM issues 2. What is Signal Electromigration: El...
Post a Comment
Read more

Exploring the Role of LEF Files in VLSI Chip Design: A Beginner's Guide

Hello Dear Readers,   Today in this post, I will provide some deep insight into the LEF file role during the VLSI Chip Design process. In VLSI (Very Large Scale Integration) design, a LEF file is a file that contains information about the physical geometry of the standard cells used in a circuit. LEF stands for Library Exchange Format. A standard cell is a pre-designed logic cell that contains a specific function, such as a flip-flop or an AND gate. Standard cells are designed to be easily combinable and scalable to create more complex circuits. The physical geometry of each standard cell is defined in the LEF file. The LEF file contains information such as the width, height, and position of the pins and metal layers of each standard cell. It also contains information about the physical design rules that govern the placement of these cells on the chip. LEF files are important in VLSI design because they enable the interoperability of different design tools from different vend...
4 comments
Read more

Power Analysis in the VLSI Chip Design

  Hello Dear Readers,   Today in this series of posts I will provide some deep insight into Power Analysis in the VLSI Chip Design. The power analysis flow calculates (estimates of) the active and static leakage power dissipation of the SoC design. This electrical analysis step utilizes the detailed extraction model of the block and global SoC layouts. The active power estimates depend on the availability of switching factors for all signals in the cell netlist. Representative simulation test cases are applied to the netlist model, and the signal value change data are recorded. The output data from the power analysis flow guide the following SoC tape out release assessments:  Total SoC power specification (average and standby leakage): The specification for SoC power is critical for package selection and is used by end customers for thermal analysis of the product enclosure. In addition to the package technology selection, the SoC power dissipation is used to ev...
5 comments
Read more