Articles Microchip

1. Dpot pseudolog + log lookup table = actual logarithmic gain
   Analogue Design Microchip MCP41XXX/42XXX
   This is the Microchip MCP41xxx digital potentiometer data sheet that includes (on page 15, their Figure 4-4) an interesting application circuit comprising a Dpot controlled amplifier with pseudologarithmic gain settings. However, as explained in ...
   28-08-2024
2. Keep Dpot pseudologarithmic gain control on a leash
   Analogue Design Amplifiers Microchip MCP41XXX/42XXX
   A Microchip Inc datasheet covering the MCP4xxx family of digital potentiometers (Dpot) includes an interesting application circuit on datasheet page 15. See Figure 1 for a (somewhat edited) version of their Figure 4-5. Figure 1. Amplifier with Dpot ...
   15-08-2024

3. Reducing error of digital potentiometers
   Measurement Microchip MCP41xxx/42xxx
   A common problem for digital potentiometers (DigiPots) is the effect of wiper resistance, which produces quite noticeable non-linearities of regulation at both ends of the resistance range. These effects also lead to an increased tempco in these ...
   04-07-2024
4. Use a microcontroller to design a boost converter
   Supply Microcontrollers Usage Microchip PIC16C782
   Boost converters, like other switchers, have traditionally received their control signals from a dedicated circuit. However, a recent trend is to integrate simple switching-power-supply building blocks into generic devices, such as ...
   15-11-2023
5. Solar panel powers two-stage lead-acid battery charger
   Supply Solar Microchip LM4041
   A solar-powered lead-acid battery charger can ensure that the battery remains fully charged over a wide temperature range. The ideal charging circuit compensates for temperature and sunlight variations, including recovery from shading. Solar or ...
   28-06-2023
6. Multichannel priority amplifier
   Analogue Design Amplifiers Microchip MCP6V51 MCP6V52 MCP6V54
   The analog priority amplifier shown in Figure 1 was originally conceived as part of a multiple output power supply where the voltage regulation was based on the level of the highest channel. Another application was an engine control system with an ...
   19-06-2023
7. Electronically generate rotating magnetic fields
   Microcontrollers Usage Microchip PIC16F628
   Many applications, such as medical therapies, magnetic stirrers, and induction heating, call for a rotating magnetic field, which you can generate by attaching multiple permanent magnets to a dc motor. This technique involves problems, including ...
   28-02-2023
8. Sensors and Controls with the RN487x Bluetooth Module from Microchip. Part 4 - How to Build an Analog Sensor and Analog Output
   Wireless Microcontrollers Wireless Microchip RN4870 RN4871
   Aaron Hanson allaboutcircuits.com Part 1 Part 2 Part 3 Learn how to hook up an analog input (potentiometer) and output (LED) using a Microchip BLE module. This is the four installment in my project series created to demonstrate using ...
   11-08-2020
9. Sensors and Controls with the RN487x Bluetooth Module from Microchip. Part 3 - How to Build a Digital Input and Digital Control Using Microchip's RN487x Bluetooth Module
   Wireless Microcontrollers Wireless Microchip RN4870 RN4871
   Aaron Hanson allaboutcircuits.com Part 1 Part 2 Learn how to use a Microchip Bluetooth module to prototype digital input and digital control peripherals. In this article, the three in a four-part series on Microchip's RN487x Bluetooth modules, ...
   07-08-2020
10. Sensors and Controls with the RN487x Bluetooth Module from Microchip. Part 2 - How to configure the RN487x module
    Wireless Microcontrollers Wireless Microchip RN4870 RN4871
    Information for configuring your modules and using them before each of the project descriptions that will follow in other articles. Part 1 Using a Console Connection to Configure the RN487x To configure the RN487x, first supply power to the module ...
    29-07-2020

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