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    • Latest Analog Layout Interview Questions (2025)
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    • Physical Design Interview Questions for VLSI Engineers
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Digital Design

Application of pn junction Diode

By siliconvlsiJune 26, 20230

What is the use of a PN junction diode? The application of a PN junction diode is when you forward-bias the…

Memory Layout Design

Difference between DDR2 and DDR3

By siliconvlsiJune 25, 20230

DDR2 memory operates at slower data transfer speeds—up to 800 MT/s—and requires a higher voltage of 1.8V. In contrast, DDR3…

VLSI Design

What is Substrate coupling in VLSI?

By siliconvlsiJune 25, 20230

Substrate coupling in VLSI refers to the phenomenon where unwanted electrical coupling occurs between different components or regions within an…

VLSI Design

What is Different Logic family

By siliconvlsiJune 25, 20230

Different Logic Family List Bipolar Complementary Metal-Oxide Semiconductor Logic (BiCMOS) BiCMOS is a logic family that combines the features of…

Physical Design

Importance of Clock Distribution Network in VLSI

By siliconvlsiJune 25, 20230

The Significance of Clock Signals The clock distribution network is responsible for distributing the clock signal(s) from a central point…

VLSI Design

Why PMOS and NMOS are sized equally in a Transmission Gates?

By siliconvlsiJune 25, 20230

In transmission gates, PMOS (P-channel Metal-Oxide-Semiconductor) and NMOS (N-channel Metal-Oxide-Semiconductor) transistors are often sized equally for specific reasons. Here’s why:…

VLSI Design

Which transistor has higher gain, BJT or MOS and why?

By siliconvlsiJune 25, 20230

Which transistor has higher gain? The BJT (Bipolar Junction Transistor) exhibits higher gain compared to the MOS (Metal-Oxide-Semiconductor) transistor. This…

VLSI Design

Why is the substrate in NMOS connected to Ground and in PMOS to VDD?

By siliconvlsiJune 24, 20230

In CMOS (Complementary Metal-Oxide-Semiconductor) logic design, the substrate connection for NMOS (N-channel Metal-Oxide-Semiconductor) and PMOS (P-channel Metal-Oxide-Semiconductor) transistors serves specific…

VLSI Design

Why not give the output of a circuit to one large inverter?

By siliconvlsiJune 24, 20230

Why not give the output of a circuit to one large inverter? Connecting the output of a circuit to a…

Digital Design

Why do we gradually increase the size of inverters in buffer design

By siliconvlsiJune 24, 20230

The gradual increase in the size of inverters in buffer design serves specific purposes. Here’s why: Driving Capacity Increasing the…

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