Analog Devices ADM3055EBRIZ | Demoboard CN0401

Beschreibung

CN0401 is an Arduino Uno compatible isolated controller area network with flexible data rate (CAN FD) communications port. The circuit interfaces to the local development platform via Serial Peripheral Interface (SPI) providing a simple method to add field bus communication to new and existing designs. CN0401 enables both the higher bandwidth CAN FD data rates (up to 8Mbps) demanded by modern multi-node CAN FD networks and the rugged electromagnetic compatibility (EMC) performance required by industrial environments.The circuit uses the integrated auxiliary isolated digital channel of the ADM3055E transceiver for runtime configuration of the bus termination. The switchable termination circuitry connects a 120 Ω split termination with common-mode filtering capacitor between the CAN FD bus lines. Switchable termination allows on-the-fly software configuration of termination locations when the CAN FD bus is physically altered. Using switchable termination, each node can be used at any physical location without mechanical changes to the nodes and software can track the position of terminations in the network.Additionally, the circuit can be set by the development platform to a reduced power standby state. While in the standby state, the isolated CAN FD communications port will notify the development platform of a remote wake-up request being transmitted by a remote CAN FD node to the CAN FD bus.With the ADM3055E CAN FD transceiver, the circuit provides reinforced signal and power isolation between the node and CAN FD bus. Electrical connection to the CAN FD bus may be made either by screw terminal or the CAN CiA 303-1 male 9-pin sub-D port. Because the ADM3055E transceiver has an integrated isolated dc-to-dc converter, it does not require external power to be present on the CAN FD bus. The examples focus on CAN FD networks however this circuit is backwards compatible with classical CAN networks.

Eigenschaften

• 5 kV rms/3 kV rms signal and power isolated CAN transceivers
• isoPower integrated isolated dc-to-dc converter
• VIO pin for 1.7 V to 5.5 V logic levels
• ISO 11898-2:2016 compliant (CAN FD)
• Data rates up to 12 Mbps for CAN FD
• Low maximum loop propagation delay: 150 ns
• Extended common-mode range: ±25 V
• Bus fault protection: ±40 V on CANH and CANL pins
• Low power standby support remote wake request
• Extra isolated signal for control (such as termination switches)
• Passes EN 55022 Class B by 6 dB
• Slope control for reduced EMI
• Safety and regulatory approvals (ADM3055E) VDE certificate of conformity
• VDE V 0884-10 (pending)
• VIORM = 849 VPEAK UL: 5000 V rms for 1 minute per
• UL 1577 (pending)
• CSA Component Acceptance Notice 5A (pending)
• IEC 60950-1, IEC 61010-1
• Creepage and clearance
• ADM3055E: 8.3 mm minimum with 20-lead SOIC_IC
• ADM3057E: 7.8 mm minimum with 20-lead SOIC_W
• High common-mode transient immunity: >75 kV/µs
• Industrial operating temperature range: −40°C to +105°C

Typische Anwendungen

• CANOpen, DeviceNet, and otherCAN bus implementations Industrial automation Process control and building control Transport and infrastructure

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers