Op Amps Without Op Amps
element14 Presents | Bald Engineer: James Lewis' VCP Profile | Workbench Wednesdays
Okay, technically, this circuit *does* use Op-Amps. However, the ones shown here are integrated into an ATmega128DB microcontroller from Microchip. The DIP package breaks out two operational amplifiers that are controllable entirely by software. Even better, you can program like they are an Arduino!
Supplemental Content:
- Pocket Op-Amp Lab technoblogy: Technoblogy - Pocket Op Amp Lab
- The Learning Circuit 68: How Op Amps Work
- DxCore ATmega128DB for Arduino IDE: https://github.com/SpenceKonde/DxCore
- 7 reasons why I like the ATmega128Dx MCUs
Bill of Material:
| Product Name | Manufacturer | Quantity | Buy KitBuy Kit |
|---|---|---|---|
| AVR128DB MCU, 8BIT, 24MHZ, SPDIP-28 ROHS COMPLIANT: YES | Microchip | 1 | Buy NowBuy Now |
| Evaluation Board, MCU 8-Bit, Arduino Nano, AVR, ATmega328 | Arduino | 1 | Buy NowBuy Now |
| USB to UART (Serial) Board | FTDI | 1 | Buy NowBuy Now |
| Digital Oscilloscope, 14-bit, 4-in-1, 2+1 Channel, 200 MHz, 1 GSPS, 40 Mpts, 1.7 ns | Multicomp | 1 | Buy NowBuy Now |