Memristor Discovery with Knowm Software
  • Memristor Discovery with Knowm Software
  • Knowm Memristor Discovery Board
  • Memristor Discovery PCB
  • Memristor Discovery Conductance Chart

Memristor Discovery Board V0.0

$ 75.00$ 139.00

A low-cost solution for exploring memristor behavior. The board plugs into the Digilent Analog Discovery 2 (sold separately). Digital IO channels 0-7 activate analog switches that couple memristors to the AD2 waveform generator and two oscilloscopes via analog switches. LEDs indicate closed switches. Easy access test-points and sockets allow for easy coupling of the circuit to additional measurement equipment and bread-boards. A lever-actuated DIP socket provides zero insertion force to prevent handling damage of chip pins.

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Product Description

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The memristor discovery board is a low-cost programmable interface for exploring memristor behavior. The board plugs into the Digilent Analog Discovery 2 (sold separately), an affordable ‘all in one’ multi-function instrument that allows users to measure, visualize, generate, record, and control mixed signal circuits.

Digital IO channels 0-7 activate analog switches that couple memristors to the AD2 waveform generator and two oscilloscopes. On LEDs indicate closed switches. Easy access test-points and pin sockets allow for coupling of the circuit to additional measurement equipment and bread-boards. A lever-actuated DIP socket provides zero insertion force to prevent handling damage of chip pins.

Analog Discovery 2 Features:

Feature Specs
Two-channel oscilloscope 1MΩ, ±25V, differential, 14-bit, 100Msample/sec
Two-channel arbitrary function generator ±5V, 14-bit, 100Msample/sec
16-channel digital I/O
2 input/output digital trigger for linking multiple instruments 3.3V CMOS
Two programmable power supplies 0…+5V , 0…-5V

The Analog Discovery 2 was designed for students in typical university-based circuits and electronics class. It’s features and specifications were obtained from feedback from professors at several universities and include USB control and power, small and portable form factor, robustness to withstand student abuse, and low-cost.

Software is open-source and available at https://github.com/knowm/memristor-discovery

Board Variations

Name Description Blue=Cathode/Yellow=Anode, 200mV/500ns per grid tick Blue=Cathode/Yellow=Anode, 200mV/500ns per grid tick
V0 ADG512 Populated with Analog Devices ADG512 analog switches (11 pC Charge Injection, 50 Ω Ron). Charge injection has been observed to cause voltage transients that exceed memristor threshold and affect memristor state during switch selection. This is not a problem for experiments on individual memristors, but can present a problem for programming multiple devices, as the act of selecting a device may disturb it’s state. ADG512 Switch Voltage Transients on Open ADG512 Switch Voltage Transients on Open ADG512 Switch Voltage Transients on Close ADG512 Switch Voltage Transients on Close
V0 DG445DY Populated with Vishay Siliconix DG445 analog switches (-1 pC Charge Injection, 100 Ω Ron). Resolves voltage transients observed with the ADG512 switches. DG445VY Switch Voltage Transients on Open DG445VY Switch Voltage Transients on Open DG445VY Switch Voltage Transients on Close DG445VY Switch Voltage Transients on Close
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Additional Information

Analog Switch

ADG512 (11pC Charge Injection / 50Ω Ron), DG445DY (-1pC Charge Injection/100Ω Ron)

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