The controller area network (CAN) serial-bus topology allows devices and microcontrollers to communicate with each other without the use of a host computer. Featuring arbitration-free transmission, it places a controller and a host processor at each device node, eliminating the more complex wiring harness that would be necessary to interconnect devices with a host computer.
ADI’s CAN transceivers such as the ADM3051, interface the CAN controller to the physical layer bus. These devices can be tested or characterized on an ATE (Automated Tester Equipment), or alternatively on bench using readily available resources such as programmable dc supplies. A useful and more convenient way is to provide an ac CAN signal as inputs, with an ability to vary the frequency and the differential input levels in order to test or characterize the device’s differential response, such as the circuit I proposed in my Analog Dialogue article. You can read more about the article in the following link: