YC

Side Note: Why we based many our products on Analog Discovery 

Digilent Analog Discovery is a series of devices that being sold by Digilent. Digilent was bought by National Instrument many years ago, and again, bought by Emerson. It was originally marketed as a device meant for Electronics Engineering Student with subsidies from Analog Devices and Xilinx. The original Analog Discovery (the black one) was sold at $99 to students. The founder of SpecialtyCircuits used it when he was fighting to learn Verilog. Although that battle failed in 2012, but the founder learnt the capacities of it. Later, Digilent released many more updated versions, Analog Discovery 2, Analog Discovery 3, Analog…

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Chicago LSM Support 

Installation Step-by-Step Command Line Interface RESTful Interface Reference Affine Transform Introduction Autoscaling Methods Clarification

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List of Jim Williams Application Notes at Linear Technology

In case of invalid link, please email us at info@specialtycircuits.com. We will get it fixed. Meanwhile, check out our portfolio on the homepage to see if we can help your engineering need. We do analog (and other stuff, of course). In Memory of Jim Williams A BIBLIOGRAPHY OF JIM WILLIAMS Jim Williams at National Semiconductor Reading Jim Williams On March 10 2017, Analog Devices completed the acquisition of Linear Technology. The long run of Linear Technology Application Notes ceased to exist since then. In Memory of Jim Williams

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A few recommendation of recordings for evaluating Clarity Headphone Amplifier

Ririko's Violin Piece Collections are all stereo recorded very well. You hear the violin moving around while she was playing. The instrument used is also a Stradivarius "Lord Borwick" (1702). Note that the first video is a playlist including 160 pieces. This recording of Vivaldi Winter is probably the best on the internet in terms of audio technical perspective. Saturday Night Live in recent years all have very good stereo recording. Turn the CLEAR SOUND switch ON on Clarity Headphone Amplifier, and enjoy the surround sound. Hear the drastic differences in sound stage of the audiences' laughs. The Echo Game…

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Interesting Books, Application Notes and White Papers

Below is a list of interesting Application Notes from various reputable vendors. Hope they help you Low Level Measurements Handbook - Precision DC Current, Voltage, and Resistance Measurements (Keithley) Spectrum Analysis Basics (Keysight) The 20-Bit DAC Is the Easiest Part of a 1-ppm-Accurate Precision Voltage Source (Analog Devices) High Speed Design Techniques, 1996 (Analog Devices) A Technical Tutorial on Digital Signal Synthesis, 1999 (Analog Devices) Op Amp Applications Handbook, 2005 (Analog Devices) The Data Conversion Handbook, 2005 (Analog Devices) Linear Circuit Design Handbook, 2008 (Analog Devices) Power of Impedance Analyzer, Comparison to Network Analyzer - Uncover real characteristics (Keysight) Impedance…

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New Product

Welcome our first public product announcement of Headphone Clarifier 109 Also a commercial grade laser scanning control software Chicago Laser Scanning Microscope

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Something about analog oscilloscope

Jim Williams once wrote quite some about the benefits of analog oscilloscope. Considering digital oscilloscope also evolved quite a bit since he passed away more 10 years ago, some of the claim may not be true anymore. Nevertheless, here are a few cases, analog scopes show their benefits. 1. Difference of 1.000MHz vs 1.001MHz generated by 40MSPS DAC. The below two screenshots showed some clear distinction between the two signals, which would be quite hard to acquire from modern digital oscilloscopes. The left one shows the peak of a 8Vpp 1.0001 MHz sine wave, the right one shows a 8Vpp…

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Equipment

At SpecialtyCircuits LLC, we are proud of our collection of test equipment. Although some of them may seems very old secondary market purchase. They can provide a very unique testing scenario that are ignored in the modern digital era. So here we go, some antique show. Tektronix 7104 with dual 7A19 and 7B10, 7B15 delaying time base. Tektronix 7854 digital storage oscilloscope with 7S12 sampling/TDR capability. Measurement up to 14GHz bandwidth LeCroy SDA11000. High bandwidth real-time oscilloscope capable of 6Hz/11GHz Tektronix 792 Spectrum Analyzer. Spectrum analysis up to 26GHz HP RF signal generator. 2-20GHz signal generator with ovenized crystal frequency…

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Product

Piggyback Platform Control Board Picosecond Impulse/Pulse Generator 1GHz High-Z Amplifier/Buffer Low Noise 20-bit Voltage Source

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Link

Below is a collection of various good electronics resources. Hopefully it can help someone. Interesting Learning Resource List of Jim William's application notes List of Bob Pease's lab notes A good resource of metrology xdevs.com List of Analog Devices application notes Bob Dobkin and Jim Williams 960-page book of app notes EEVblog Forum Metrolgoy EEVblog YouTube Channel EDN Analog Dialogue LT Journal Archives Useful Software Resister Optimizer http://jahonen.kapsi.fi/Electronics/ResOptimizer/ Find best resistor combination to approximate any value. Qucs (Quite universal circuit simulator) https://qucs.sourceforge.net/ LTSpice https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html QSpice https://p.qorvo.com/qspice Tina-TI https://www.ti.com/tool/TINA-TI Coilcraft LC Filter Designer Software https://www.coilcraft.com/en-us/other/coilcraft-lc-filter-designer-software/ LTpowerCAD and LTpowerPlanner https://www.analog.com/en/design-center/ltpowercad.html KiCad EDA…

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Our Product Philosophy 

At SpecialtyCiruits, our product philosophy focuses on creating something useful, versatile, and economical, by utilizing the off-the-shelf components on the market. We optimize the specification, functionality to be sweet spot of economics and functionality. We don't actively chasing the best performance by bloating the cost the hardware, nor cut the cost to bare minimum to the point quality is severely impacted. 

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So here we are

After hiding in sheeth mode for many year, we are ready for announcing the products we had been working on. Stay tuned for A sub 100-ps rise time impules generator A 200MHz differential amplifier/comparator A 1GHz High-Z input amplifier Low Noise 20-bit DAC and a lot more...

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