I hope that the blogs on the IMS show provided some good insight on the day to day activities around IMS to those of you who may not have had the chance to be there and perhaps it has also provided some additional details to those who did attend. I thoroughly enjoyed writing the blogs each day to recap the day’s events. One of the questions that appeared on one of the IMS blog posts was about the details of the demonstration I had set up at the Analog Devices booth. That is an excellent question so I thought I’d devote a blog post to give readers an insight into what went into the demonstration that I was showing for IMS2015. I’ve included a photo of the demonstration stand that I had set up in the Analog Devices booth. It shows our back panel display with information on the data converter, the AD9625, as well as the high speed clock device, the HMC7044, which I was showing. In addition, you can see the peripheral equipment that I needed to make the demonstration operate.
As I mentioned in my previous blogs, two of the well-known test equipment vendors, Rohde & Schwarz and Keysight Technologies, were kind enough to send loaner equipment to the show for me to use in my demonstration. I needed equipment from both vendors in order to cover the two demonstrations running on my stand. I used the Rohde & Schwarz SMA100 in my demonstration for the AD9625 to provide the clock input. In order to keep the amount of equipment needed to a minimum I typically use an oscillator from Wenzel Associates to provide an analog input signal and/or the clock input. Due to the clock frequency necessary for my demonstration (2.6 GHz) I was unable to also use a Wenzel oscillator for the clock input (I have no 2.6 GHz Wenzel oscillator). Generally, I prefer to use two of these since they are small and easy to take along while traveling. In this case, I used the 1.0 GHz MXO series Wenzel oscillator to provide the analog input signal. This is filtered (to remove harmonics) by a TTE 1.0 GHz band pass filter. In order to capture the data and generate an FFT, I used the compatible data capture board, the HSC-ADC-EVALEZ. The connections are show in the demonstration setup diagram below.
The AD9625 demonstration is shown on the left in the first photo showing the demonstration stand. The HSC-ADC-EVALEZ connects up to a PC via a USB cable. On the PC, VisualAnalog software is used to take the data collected on the capture board and process it to provide FFTs among other various plots. I had a larger monitor connected to my laptop in order to make the FFT more visible to those who dropped by the booth to see the demonstration. In addition to the AD9625 I also had the HMC7044 high performance 3.2 GHz jitter attenuator on my demonstration stand. This is shown on the right in the first photo of the demonstration stand above. For this demonstration I used a Wenzel Sprinter series 122.88 MHz oscillator to provide the reference for the HMC7044. Using the internal multipliers the HMC7044 was set up to provide a 2.58 GHz output frequency which was input to the Keysight Technologies E5052B signal source analyzer. The E5052B could be used to show the phase noise or the output spectrum of the HMC7044. This demonstration also required a USB connection to a PC in order to run the GUI for configuring the device. For both demonstrations I used DC wall power supplies to provide power to the evaluation and data capture boards. All have on board LDOs to regulate the input voltage. The setup for the HMC7044 is shown in the diagram below.
Each year I work with those in my applications and marketing group to determine the most suitable products to demonstrate at the show. The goal is to showcase the latest technology in data converters that Analog Devices has to offer. Specifically for me, that means the latest ADC products that we have to offer. This year I broadened my horizons somewhat to also show a complementary clocking product. When demonstrating the latest products my secondary goal is to keep the amount of equipment required simple, effective, and compact. It is incredibly helpful to have vendors such as Keysight Technologies and Rohde & Schwarz that are willing to have equipment sent to the show. I was able to pack all the necessary remaining equipment into a small pelican case and ship it to the local hotel for me to pick up upon arrival. Once the show is over I take a return label that is already printed up before leaving for the show, attach it to the pelican case, and drop it off back at the hotel to be shipped back to my office.
I hope this has helped provide some insight into the actual demonstration. If there are any other questions, please feel free to leave a comment. I am always open to entertaining questions from readers. I enjoy the chance to interact and provide more details where needed.