@@TechSimplifiedTV Sure, I've one doubt actually pre simulations every corner is giving good results, but after post simulations SS40 and SS -40 are failing, and rest of them where coming good what might be the reason for this....? .
The problem you are mentioning here , there could be two ways to approach: 1. Check with your senior/manager who are more experienced than you whether they have faced similar issues , if so you will get the solution within your team or you might have a Known Problem & Solution Repository within your company - check there. 2. You can open/raise a ticket. all EDA vendors have strong team of application engineers and they are very efficiently trained to solve customer issues. They are the right persons to help you with the tool specific query. Thanks for approaching.
The problem you are mentioning here , there could be two ways to approach: 1. Check with your senior/manager who are more experienced than you whether they have faced similar issues , if so you will get the solution within your team or you may have a repository of Known Problem and Solution (KPS : such as bugzilla/jira/CRM) repostory within your company -- have a look there 2. You can open/raise a ticket. all EDA vendors have strong team of application engineers and they are very efficiently trained to solve customer issues. They are the right persons to help you with the tool specific query. Thanks for watching the video.
Never forget it is semi-conductor not a conductor. That is why it has resistance in on time also. Rest of the explanation for your help. =================================================================== ON Resistance in CMOS and Its Significance : What is ON Resistance? ON resistance is the effective resistance a MOS transistor (NMOS or PMOS) offers when it is fully turned on and operating in the linear (ohmic) region. It is a key parameter that affects the power dissipation, speed, and overall performance of circuits using MOSFETs. ON Resistance of NMOS and PMOS 1. NMOS ON Resistance: When an NMOS transistor is turned on, its ON resistance depends on factors such as the electron mobility, the width-to-length ratio of the transistor (W/L), the gate voltage above the threshold, and the oxide capacitance. NMOS devices generally have lower ON resistance compared to PMOS devices due to the higher mobility of electrons. 2. PMOS ON Resistance: When a PMOS transistor is turned on, its ON resistance is determined by similar factors as NMOS, but the lower mobility of holes results in higher ON resistance. To compensate, PMOS transistors are typically designed wider than NMOS transistors to balance performance in CMOS circuits. Significance of ON Resistance in CMOS 1. Power Dissipation: - Dynamic Power Dissipation: Lower ON resistance reduces resistive power losses during transistor switching, improving circuit efficiency. - Static Power Dissipation: Although static power is low in CMOS circuits, lower ON resistance can minimize power loss during leakage scenarios. 2. Signal Propagation Delay: - The switching speed of a CMOS circuit is influenced by ON resistance. Lower ON resistance results in faster charging and discharging of load capacitances, reducing delays and enhancing performance. 3. Voltage Swing and Noise Margins: - High ON resistance can lead to incomplete switching of the transistors, reducing the voltage swing at the output. This degrades noise margins and may cause logic errors, especially in high-speed circuits. 4. Power Supply Voltage Scaling: - In modern CMOS designs, power supply voltages are scaled down to reduce power consumption. Lower supply voltages reduce the driving capability of transistors, which increases ON resistance. Designers mitigate this by optimizing the size and aspect ratios of transistors. 5. Energy Efficiency in Low-Power Design: - Lower ON resistance minimizes energy losses during switching, which is especially crucial in low-power CMOS designs used in applications like IoT and portable devices. 6. Symmetry and Balancing in CMOS: - CMOS circuits rely on the complementary operation of NMOS and PMOS transistors. The PMOS transistor typically has higher ON resistance, which can create imbalances in switching characteristics. Designers adjust transistor dimensions to achieve balanced rise and fall times and maintain efficient operation. 7. Thermal Effects: - High ON resistance can cause localized heating in transistors due to resistive losses. This can degrade reliability and performance, particularly in high-power or densely packed CMOS circuits. Factors Affecting ON Resistance: - Transistor Dimensions (W/L): Increasing the width-to-length ratio reduces ON resistance. - Gate Voltage: Higher gate voltage relative to the threshold voltage reduces ON resistance. - Mobility: NMOS devices have lower ON resistance than PMOS due to higher electron mobility. - Temperature: Higher temperatures reduce mobility, leading to increased ON resistance. Conclusion: ON resistance in CMOS circuits plays a crucial role in determining performance, power efficiency, and reliability. By minimizing ON resistance through careful design and optimization, CMOS circuits achieve faster operation, lower power dissipation, and improved functionality, making them suitable for a wide range of modern electronic applications.
if PMOS has twice the width assuming same length, shouldn't it's resistance be half of NMOS? Because Ron is prop to 1/Id so Ron is proportional to inverse of (W/L)
Text articles of the videos are published in our website (www.techsimplifiedtv.in) , if it is not published there already then will be published there !
I have never seen such thorough summary for the process coner before
I'm very thankful for your valuable information.
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It seems The Videos Helped You ! Please share this channel in your known or professional circle to spread the help to other also !
@@TechSimplifiedTV
Sure, I've one doubt actually pre simulations every corner is giving good results, but after post simulations SS40 and SS -40 are failing, and rest of them where coming good what might be the reason for this....? .
The problem you are mentioning here , there could be two ways to approach:
1. Check with your senior/manager who are more experienced than you whether they have faced similar issues , if so you will get the solution within your team or you might have a Known Problem & Solution Repository within your company - check there.
2. You can open/raise a ticket. all EDA vendors have strong team of application engineers and they are very efficiently trained to solve customer issues. They are the right persons to help you with the tool specific query.
Thanks for approaching.
The problem you are mentioning here , there could be two ways to approach:
1. Check with your senior/manager who are more experienced than you whether they have faced similar issues , if so you will get the solution within your team or you may have a repository of Known Problem and Solution (KPS : such as bugzilla/jira/CRM) repostory within your company -- have a look there
2. You can open/raise a ticket. all EDA vendors have strong team of application engineers and they are very efficiently trained to solve customer issues. They are the right persons to help you with the tool specific query.
Thanks for watching the video.
crisp information in quick time.
You're welcome 😊 !
It seems The Videos Helped You ! Please share this channel in your known or professional circle to spread the help to other also !
@@TechSimplifiedTV sure. It's great work you have done.
Good information.. Thanks for making video
Very good and informative video.
Thanks :)
You're welcome 😊 !
It seems The Videos Helped You ! Please share this channel in your known or professional circle to spread the help to other also !
what is the meaning of ON resistance ? ON resistance of NMOS and PMOS
Never forget it is semi-conductor not a conductor. That is why it has resistance in on time also. Rest of the explanation for your help.
===================================================================
ON Resistance in CMOS and Its Significance :
What is ON Resistance?
ON resistance is the effective resistance a MOS transistor (NMOS or PMOS) offers when it is fully turned on and operating in the linear (ohmic) region. It is a key parameter that affects the power dissipation, speed, and overall performance of circuits using MOSFETs.
ON Resistance of NMOS and PMOS
1. NMOS ON Resistance:
When an NMOS transistor is turned on, its ON resistance depends on factors such as the electron mobility, the width-to-length ratio of the transistor (W/L), the gate voltage above the threshold, and the oxide capacitance. NMOS devices generally have lower ON resistance compared to PMOS devices due to the higher mobility of electrons.
2. PMOS ON Resistance:
When a PMOS transistor is turned on, its ON resistance is determined by similar factors as NMOS, but the lower mobility of holes results in higher ON resistance. To compensate, PMOS transistors are typically designed wider than NMOS transistors to balance performance in CMOS circuits.
Significance of ON Resistance in CMOS
1. Power Dissipation:
- Dynamic Power Dissipation: Lower ON resistance reduces resistive power losses during transistor switching, improving circuit efficiency.
- Static Power Dissipation: Although static power is low in CMOS circuits, lower ON resistance can minimize power loss during leakage scenarios.
2. Signal Propagation Delay:
- The switching speed of a CMOS circuit is influenced by ON resistance. Lower ON resistance results in faster charging and discharging of load capacitances, reducing delays and enhancing performance.
3. Voltage Swing and Noise Margins:
- High ON resistance can lead to incomplete switching of the transistors, reducing the voltage swing at the output. This degrades noise margins and may cause logic errors, especially in high-speed circuits.
4. Power Supply Voltage Scaling:
- In modern CMOS designs, power supply voltages are scaled down to reduce power consumption. Lower supply voltages reduce the driving capability of transistors, which increases ON resistance. Designers mitigate this by optimizing the size and aspect ratios of transistors.
5. Energy Efficiency in Low-Power Design:
- Lower ON resistance minimizes energy losses during switching, which is especially crucial in low-power CMOS designs used in applications like IoT and portable devices.
6. Symmetry and Balancing in CMOS:
- CMOS circuits rely on the complementary operation of NMOS and PMOS transistors. The PMOS transistor typically has higher ON resistance, which can create imbalances in switching characteristics. Designers adjust transistor dimensions to achieve balanced rise and fall times and maintain efficient operation.
7. Thermal Effects:
- High ON resistance can cause localized heating in transistors due to resistive losses. This can degrade reliability and performance, particularly in high-power or densely packed CMOS circuits.
Factors Affecting ON Resistance:
- Transistor Dimensions (W/L): Increasing the width-to-length ratio reduces ON resistance.
- Gate Voltage: Higher gate voltage relative to the threshold voltage reduces ON resistance.
- Mobility: NMOS devices have lower ON resistance than PMOS due to higher electron mobility.
- Temperature: Higher temperatures reduce mobility, leading to increased ON resistance.
Conclusion:
ON resistance in CMOS circuits plays a crucial role in determining performance, power efficiency, and reliability. By minimizing ON resistance through careful design and optimization, CMOS circuits achieve faster operation, lower power dissipation, and improved functionality, making them suitable for a wide range of modern electronic applications.
if PMOS has twice the width assuming same length, shouldn't it's resistance be half of NMOS? Because Ron is prop to 1/Id so Ron is proportional to inverse of (W/L)
Thanks ❤
You're welcome 😊 !
It seems The Videos Helped You ! Please share this channel in your known or professional circle to spread the help to other also !
Very nice video....
what is slow and what is fast ?is it electrons or performance of nmos and pmos circuit?
It is the nmos and pmos circuit performance.
where to download the ppt? I want to save and study
Text articles of the videos are published in our website (www.techsimplifiedtv.in) , if it is not published there already then will be published there !
Hi, could you please provide the link of BEOL corners video in the description? Thank you.
Here : ua-cam.com/video/saIOqXIUMXg/v-deo.html
RC Corners : ua-cam.com/video/gNrzhJ0Mt5U/v-deo.html