Keynote address 7 – Don Katz CEO Audible Inc The main message to the Portable Media Expo from Don Datz, was that for podcasting to take off, it needs to be easy, really easy. Here are the key points: 1)...

In the third and final episode of Ortho-Man, Fr. Joseph is led down a dark hallway by a mysterious stranger who reveals to him the similarities of Underdog, Batman, Pink Panther, Indiana Jones, Buzz Lightyear and ... Ortho-Man.

Real-life applications of security technologies.

velocityconf: RT @avleen: Ok folks, home stretch! We need 10 more people to record short #OpsSchool videos NEXT WEEK at @velocityconf. We can do it!...

The Internet is full of cats—and in this case, malware-delivering fake cat websites used for very targeted search engine optimization.

Hi *,

I am simulating a 32kHz high Q crystal oscillator with a pulse shaping circuit. I set up a PSS analysis using the Shooting Newton engine. I set a beat frequency of 32k and used the crystal output and ground as reference nodes. After the initial transient the amplitude growth was already pretty much settled such that the shooting iterations could continue the job.

My problem is: In 5...10% of my PVT runs the simulator detects a frequency divider in the initial transient simulation. The output log says:

Frequency divided by 3 at node <xxx>

The Estimated oscillating frequency from Tstab Tran is = 11.0193 kHz .

However, the mentioned node is only part of the control logic and is always constant (but it has some ripples and glitches which are all less than 30uV). These glitches spoil my fundamental frequency (11kHz instead of 32kHz). Sometimes the simulator detects a frequency division by 2 or 3 and the mentioned node <xxx> is different depending on PVT - but the node is always a genuine high or low signal inside my control logic.

How can I tell the simulator that there is no frequency divider and it should only observe the given node pair in the PSS analysis setup to estimate the fundamental frequency? I have tried the following workarounds but none of them worked reliably:

- extended/reduced the initial transient simulation time

- decreased accuracy

- preset override with Euler integration method for the initial transient to damp glitches

- tried different initial conditions

- specified various oscillator nodes in the analysis setup form

By the way, I am using Spectre X (version 21.1.0.389.ISR8) with CX accuracy.

Thanks for your support and best regards

Stephan

New York, NY : Routledge, 2021.

Counterfeit certification labels on household electronics are a safety issue not to be ignored.

PSS Honors Event Toasts Local Heroes in Elder Care, Family Caregiving and Introduces Impact Award for Leadership in Positive Aging

New Community Education Initiative for New York City's Older Adults by Multi-Service Nonprofit Agency PSS

The real game happened back.

velocityconf: RT @avleen: Ok folks, home stretch! We need 10 more people to record short #OpsSchool videos NEXT WEEK at @velocityconf. We can do it!...

 Settlement and Default Handling Procedures in Multilateral and Deferred Net Settlement Systems under the PSS Act, 2007

It’s always good to hear what real users think of products. Here is a very detailed review (~4000 words) by an Anonymous user, nick named Ant-Man (from the movie). Overall it’s a very strong endorsement of Perspec, and summarize...(read more)

There’s nothing like the heat of a DAC demo to stress new technology and the engineers behind it! Such was the case at DAC 2018 at the new locale of Moscone Center West, San Francisco. Cadence and AMIQ were two of several vendors who announced ...(read more)

Cadence continues to be a leader in SoC verification and has expanded our industry investment in Accellera portable stimulus language standardization. Some customers have expressed reservations that portable stimulus requires the effort of learn...(read more)

A little bit of everything in the blog today: PSS is All Over As someone that was involved with UVM and PSS, both becoming Accellera standards, it is exciting to see both growing independently and together. With PSS we had a massive amount of papers ...(read more)

Hello,

Would anyone know how to setup a PSS or QPSS simulation with 25% dutycycle clock sources or if such a thing is possible with QPSS.

Fig1 (below) is a snapshot of the circuit I am trying to characterize. This has 4 clock ports each with 25%duty cycle in the ON state. Fig2 below shows two of these clocks.

Each path in the circuit consists of two switches with a low pass RC sandwiched in between. The Input is a 50Ohm port sine wave and the output is a 1K resistor. The output nets of all paths are connected together.

I am trying to determine the swept frequency response from input to output (voltage) when the input is from 500Mhz to  510MHz. The Period (T=1/Fp) of each of the pulses is such that Fp=500MHz. The first pulse source has a delay=0, second has delay=T/4, third delay=2T/4, etc...

I am currently getting it working and seeing the correct result (bandpass response) with Transient but the problem is doing a dft at 500MHz with 10KHz spacings needs at least 100us and takes up a lot of time and disk space.

Many Thanks,
Chris.

Fig1

Fig2

Hello,

I would like to simulate the PSSR+/PSSR- and the CMMR using xf for the attached test bench.

Normally, I do the AC analysis and using the post-processing capability of cadence spectre I do 20log(vdd/vout) for PSSR+

and 20*log(vss/vout) for PSSR-. 

looked online from an old post that I do:

PSRR-
db20(1/DATA("/Vn/PLUS" "xf-xf"))

PSRR+
db20(1/DATA("/Vp/MINUS" "xf-xf"))

How about the for the CMRR?

Thanks a lot in advance.  

Company: A V Immigration And Careers Consultancy Private Limited
Qualification: Bachelor Of Computer Application (B.C.A), Bachelor Of Technology (B.Tech/B.E), Bachelor of Science (B.Sc), Master in Computer Application (M.C.A), Masters in Technology (M.Tech/M.E/M.Sc), Post Graduate Diploma in Computer....

Field, Andy P., author

Online Resource

Allen, Peter James, 1978- author

Privitera, Gregory J., author

Moskva : Izd-vo T͡SK KPSS "Pravda", 1990-

Online Resource

Senior, Donald, author