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New tutorial tools for analog design: Op Amp and ADC Cookbooks

Today’s circuit designers usually will need to design with analog circuitry on their boards, even if the core circuitry is Processor-based or a power supply design, MEMS/sensor or such. The problem is that the great majority of designers out there are not necessarily analog experts and can probably design a basic analog solution, but not an optimally performing solution to meet their overall system needs.

Also, there are not too many good analog mentors available to help guide designers.

Well, TI comes to the rescue with two newly released circuit cookbooks – one for ADCs and the other for op amps. They include circuit “recipes” that give designers step-by-step instructions, basic formulas and more to help engineers in the design process. The circuit cookbooks do require a myTI login to download. If users do not want to login, TI lists all of the individual circuits at the bottom of the page. These do not require a login to view. I recommend creating a login—TI has a wealth of information on myTI.

Designers should be aware that the circuits in these two books require a basic understanding of op amp and ADC concepts. If you’re new to op amp design, we highly recommend completing the TI Precision Labs (TIPL) training series. TIPL includes courses on introductory topics, such as device architecture, as well as advanced, application-specific problem-solving, using both theory and practical knowledge. Check out the curriculum for op amps, ADCs and more here.

I got my Analog design experience from very excellent mentors in audio and microwave in my early design years. When I joined Burr-Brown, I received a unique view into Analog circuitry by some of the industry’s best mentors such as Jerry Graeme, Bruce Trump, John Brown, Neil Albaugh, and including Tom Brown, the founder of Burr-Brown—-and so many more analog pioneers along the way at Texas Instruments as well.

These books have so many useful circuit insights for designers. Each topic gives the designer a list of Design Goals, Design description, Schematic with Design notes, Design Steps, Simulation results, along with a couple of choices for the best component to use in the design.

Op Amps

Some of my favorites are the Differentiator circuit, Transimpedance Amplifier, Slew Rate Limiter Circuit, Single-ended input to differential output Circuit, and Sensor Acquisition.

ADCs

Some of my favorites are the Low-Power Sensor Measurements: 3.3V, 1-ksps, 12-Bit, Single-ended, Single supply circuit; High-Input impedance, True differential, Analog Front End (AFE) Attenuator Circuit for SAR ADCs; Circuit for driving a Switched-Capacitor SAR ADC with an Instrumentation Amplifier; Reducing Effects of External RC Filter Circuit on Gain and Drift Error for Integrated Analog Front Ends (AFEs): +/-10V, up to 200 kHz, 16-bit; and Isolated Power Supply, Low-Noise Circuit: 5V, 100 mA.

I highly recommend getting these books downloaded and saved so that you can reference them in your designs. I know there will be many more of these tutorial, mentoring books to come. My friend and former colleague, Tim Greene, is an integral part of this team of Analog experts imparting this critical knowledge for industry designer. I worked with him at Burr-Brown and then at TI for many years and I know and trust his knowledge as a mentor as well as his team's knowledge in Analog design.

Enjoy these books and please send me feedback as to what else you would like to see in the way of more topics in these kinds of books.

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