For all its benefits, this is one very special digital potentiometer. And we have seven tested and verified circuit examples to show for it.
ADI's AD5292 is single-channel, 10-bit programmable, 1024-tap digipot with ± 1% end-to-end resistor tolerance (RTol) error over a wide ±15-V supply range. That's 20x better than competing digiPots which specify a minimum RTol error of 20 percent. With performance like that, it's good for a variety of precision measurement applications, and we have a few detailed circuits to share. Each of these Circuits from the Lab™ designs offer a circuit note with detailed information.
- Featured Circuit Note - CN0117: Programmable Bidirectional Current Source. See diagram and link below.
- Featured Circuit Note - CN0114: Low Cost, High Voltage, Programmable Gain Instrumentation Amplifier. See diagram and link below.
- CN0115: Programmable High Voltage Source with Boosted Output Current.
- CN0111: Building a 30 V Low Cost DAC.
- CN0113 / CN0112: Two options for building a Variable Gain Amplifier: inverting and non-inverting.
 Read the full circuit note to learn about the circuit functions and benefits. This circuit provides a programmable bidirectional Howland current source using the AD5292 digital potentiometer, a member of the digiPOT+ family, in conjunction with the quad ADA4091-4 op amp and the ADR512 voltage reference. This circuit offers 10-bit resolution over an output current range of ±18.4 mA. The AD5292 is programmable over an SPI-compatible serial interface. |
 Read the full circuit note to learn about the circuit functions and benefits. This circuit provides a low cost, high voltage, programmable gain instrumentation amplifier using the AD5292 digital potentiometer, a member of the digiPOT+ family, and the AD8221 instrumentation amplifier. The circuit offers 1,024 different gain settings, controllable through an SPI digital interface. The ±1% resistor tolerance performance of the AD5292 provides low gain error over the full resistor range. |
ADI engineers share their lab work with you in these 'Circuits from the Lab'. Combine these product pairings quickly and with confidence.
- Circuits provide solutions for many common application needs.
- Each circuit includes detailed design documentation, common circuit variations, and more.
- Circuit function & performance are verified in hardware.
Additional Design Resources:
- Webcast: Understanding and Applying Digital Potentiometers
- Tutorial: Digital Potentiometers (pdf)
