Articles Texas Instruments

1. A high-performance current source
   Christopher Paul
   Supply Texas Instruments LM317A
   The ever innovative and prolific Mr. Woodward has offered “PWM-programmed LM317 constant current source” [ 1 ], an intriguing programmable constant current source which elicited a lively conversation in its comments section. A Zen ...
   May 7, 2025
2. Op-amp input protection can be noisy
   Arthur Kay
   Analogue Design Amplifiers Texas Instruments OPA205 OPA206
   Most operational amplifiers (op amps) have input and output electrostatic discharge (ESD) protection diodes, as shown in Figure 1. These diodes are designed for protection from ESD damage during device testing and product assembly. Figure 1. Op ...
   Mar 26, 2025

3. A pitch-linear VCO. Part 2 - Taking it further
   Nick Cornford
   Audio Oscillators Texas Instruments CD4013B CD4015B CD4013B
   In Part 1, we saw how to make an oscillator whose pitch, as opposed to frequency, can be made proportional to a control voltage. In this second part, we’ll look at some alternative ways of arranging things for other possible applications. To ...
   Mar 14, 2025
4. Add one resistor to allow DAC control of switching regulator output
   Stephen Woodward
   Supply Texas Instruments TPS54332
   Whether its buck, boost, or buck/boost, internal or external switch, milliamps or tens of amps, a literal cornucopia of programmable output switching regulator/converter chips are commercially available. While the required external Ls and Cs (of ...
   Jan 20, 2025
5. Ternary gain-switching 101 (or 10202, in base 3)
   Nick Cornford
   Analogue Design Texas Instruments TL074 TL084 LM4562
   This design idea is centered on the humble on/off/on toggle switch, which is great for selecting something/nothing/something else, but can be frustrating when three active options are needed. One possibility is to use the contacts to connect extra, ...
   Jan 7, 2025
6. Unlocking the possibilities of programmable logic
   Russell Crane
   Logic Texas Instruments TPLD1201
   We often say that logic devices are the glue to every electronics design, but they are often the last parts that you might think about when choosing components for a system. There are certainly many tried-and-true standard logic devices to choose ...
   Dec 17, 2024
7. How to control your impulses. Part 2 - Step function
   Nick Cornford
   Oscillators Measurement Texas Instruments CD74HC4053 CD74HC74
   In the first part of this DI ( Ref. 1 ), we saw how to gate an oscillator to generate well-behaved impulses. Now we find out how to extend that idea to producing well-behaved step functions, or nicely smoothed square waves. The ideal here is the ...
   Nov 24, 2024
8. How to control your impulses. Part 1 - Dirac delta
   Nick Cornford
   Oscillators Measurement Texas Instruments CD74HC4053 CD74HC74
   The principle behind testing the impulse response of circuits is simple: hit them with a sharp pulse and see what happens. As usual, Wikipedia has an article detailing the process ( Ref. 1 ). This notes that the ideal pulse a unit impulse, or Dirac ...
   Nov 18, 2024
9. Add noise measurements to your benchtop tools
   Measurement Texas Instruments OPA211 OPA376
   The biggest problem with precision noise measurement is that the noise floor you’re trying to evaluate is frequently below the sensitivity of your measuring instruments. The dominant technique for gaging precision op-amp noise is to calculate ...
   Nov 6, 2024
10. Capacitor-powered electronics is at the core of green design
    Alexander Bell
    Supply Texas Instruments LMC6442
    The concept of using supercapacitors (also known as ultracapacitors, supercaps, etc.), and replacing the batteries in portable micropower applications ( Ref. 1 ) is gaining momentum. In fact, it has become one of the more noticeable technical ...
    Oct 31, 2024

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