Articles and news - 2

discrete auto power-off timer excellent characteristics
A discrete auto power-off timer with excellent characteristics
09.08.2021 Circuits

Over the years, various power-off circuits have been published. However, the circuit proposed here is very simple and has excellent characteristics. It features a fast power-off transition, with only 8 mV voltage drop at power on and sub-µA leakage current...

Processor history road 6502 nostalgia
Processor history: The road to the 6502 nostalgia
09.06.2021 Articles

PragmatIC Semiconductor’s recent announcement about developing a flexible version of the 6502 processor takes tech history buffs on the road to nostalgia...

Build transformerless 12V-to-180V dc dc converter
Build a transformerless 12V-to-180V dc/dc converter
09.02.2021 Circuits

Some transducers for portable or automotive applications need accurately regulated, high-voltage bias and draw little current. To produce such high voltages from a low battery voltage, designers typically use switch-mode dc/dc converters...

Practical Guide High-Speed Printed-Circuit-Board Layout. Part
A Practical Guide to High-Speed Printed-Circuit-Board Layout. Part 2
09.01.2021 Articles

A ground plane acts as a common reference voltage, provides shielding, enables heat dissipation, and reduces stray inductance (but it also increases parasitic capacitance). While there are many advantages to using a ground plane, care must be taken when implementing it...

Practical Guide High-Speed Printed-Circuit-Board Layout. Part
A Practical Guide to High-Speed Printed-Circuit-Board Layout. Part 1
08.30.2021 Articles

Despite its critical nature in high-speed circuitry, printed-circuit-board layout is often one of the last steps in the design process. There are many aspects to high-speed PCB layout; volumes have been written on the subject. This article addresses high-speed layout from a practical perspective...

Circuit provides Class motor control
Circuit provides Class D motor control
08.26.2021 Circuits

Class D audio amplifiers provide a dual benefit for battery-powered portable devices. They enhance battery life, and they produce much less power dissipation than do their linear cousins. Those features make Class D amplifiers ideal candidates for controlling speed and direction in small electric motors...

Circuit forms novel floating current source
Circuit forms novel floating current source
08.26.2021 Articles

Figure shows a polarization circuit applicable to ISFET sensors. ISFETs are solid-state chemical sensors that measure the pH value of a solution in biomedical and environmental applications, for example...

New MCU portfolio redefines microcontroller performance
New MCU portfolio redefines microcontroller performance, enabling 10 times higher processing capability than existing devices

Texas Instruments introduced a new high-performance microcontroller portfolio that advances real-time control, networking and analytics applications at the edge. With new Sitara AM2x MCUs, engineers can achieve 10 times the computing capability of traditional...

Schmitt trigger provides toggle function
Schmitt trigger provides toggle function
08.25.2021 Circuits

D-type flip-flops, with the inverted output connected to the D input, can toggle a clock signal. If your circuit has an extra Schmitt-trigger inverter gate, you can use it to accomplish the same thing...

Polarity-correcting circuit protects battery-powered devices
Polarity-correcting circuit protects battery-powered devices
08.24.2021 Circuits

A previously-published Design Idea outlined a polarity protection circuit that provides the correct connection of the battery to a load regardless of the battery’s orientation in its holder. The circuit, based on the MAX4636, a fast-switching, low-voltage, dual SPDT CMOS analog switch IC from Maxim Integrated, was functional, but it had some drawbacks...