CAN
Controller
Like any integrated circuit the controller will need some peripheral components to make it run properly
Crystal
Keep the XTAL as close as possible to the IC. Where applicable connect the XTAL housing to GND. A via fence reduces coupling to the GND plane. An oscillator can be used alternatively.
Load Capacitor
Load capacitors should be low leakage and stable across temperature range (NP0). For the capacitive load (cload) the stray capacitance of the PCB and the IC pins should be considered:
CL = (C1*C2) / (C1+C2) + Cstray
Cstray ≈ 3…6pF
Digital Isolator
Digital Isolators provide a galvanic isolation of signals and reliable data transmission in high-speed applications with rates up to 150 Mbps. The WPME-CDIx series optionally includes an isolated power supply and provides an isolation voltage of up to 5000VRMS. All part numbers are UL1577 recognized and have VDE 0884-17 and IEC 60747-17 certificates.
Isolated DC/DC Converter
The use of isolated signal lines often facilitates the need for an isolated power supply for sensors or other peripherals. Integrated power modules simplify the design and accelerate the development
Common Mode Filter
On differential datalines, a CMC filters common mode noise without affecting the useful signal.
ESD Protection
ESD protection devices should be put right behind the connector. Avoid layer hops to prevent propagation of the ESD.
ESD Protection
ESD protection devices should be put right behind the connector. Avoid layer hops to prevent propagation of the ESD.
D-SUB Connector
We can provide the well established D-Sub connector. Not only do we have the male and female version in our portfolio, but with the angled and non angled versions and fitting cable options we can fully support you and your needs.
Terminal Blocks
To further support the needs of our industrial customers we also have a wide range of Terminal Blocks. From a technical aspect we support THT, THR and SMT and we have different pitches, ranging from 2,5mm up to 7,62mm, when looking at our pluggable portfolio. To give you an overview of the fixation types we can offer: Wire Protector, Rising Cage Clamp, Excenter Clamp, Screwless Spring Clamp, Screwless Push In, Pluggable and IDC Clamp.
XTAL Ground
This GND plane should be connected to IC GND and cover all the traces to the XTAL.
Short Introduction to CAN
CAN (Controller Area Network) is a standard from the automotive industry for linking various control units in vehicles. Thanks to its big popularity CAN has also established itself in automation technology.
The maximum number of bus devices is not limited, whereby each bus device can operate as a transmitter or receiver.
