Product category:
Communications ICs (Wired)
News Release from: AMI Semiconductor | Subject: Long-wire high-speed CAN transceivers
Edited by the Electronicstalk Editorial
Team on 29 November 2007
CAN transceivers run over longer wires
Transceivers allow the use of CAN-enabled equipment in industrial applications requiring line lengths in excess of 500m.
AMI Semiconductor has a new range of devices for long-wire and low baud rate Controller Area Network (CAN) applications Designers now can use a qualified and proven CAN transceiver for very long wires and/or low baud rates, enabling the use of CAN-enabled equipment in industrial applications requiring line lengths in excess of 500m
This article was originally published on Electronicstalk on 26 Mar 2001 at 8.00am (UK)
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Available in 3.3 and 5V interface variants, the new ASSP family includes a device with a functionality that automatically adapts communication rates to the observed line speed.
In addition, all of AMI Semiconductor's CAN transceivers have exceptional overvoltage protection on the CAN bus of +/-45V (common mode).
"The expansion of building automation, factory control and other wide distributed systems has created a need for robust, wired data communications over hundreds of meters", says Guido Remmerie, Manager, Worldwide Industrial ASSPs at AMIS.
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"Our new long-wire CAN transceiver chips, with their pedigree of automotive-proven quality and reliability, enable the design of more complex industrial systems for important operations such as energy management, process optimisation and facility security".
The CAN protocol requires an in-frame response which, for long wires, is achieved by reducing transmission speed.
However, at low speeds (below 60Kbaud), a timeout system limits CAN use and hence line length.
To support long-wire CAN communications in industrial applications, AMIS has extended its CAN product line by providing versions with adapted time-out function for all of its long-wire CAN transceiver products.
The AMIS long-wire CAN transceiver ASSPs target end applications with wired communication in physically long or distributed systems.
Examples of these systems include elevators, security monitoring systems, in-building communication, building control, process control, machine control and HVAC systems.
This new CAN transceiver family has pin-out and functionality identical to AMI Semiconductor's range of CAN transceivers that is already qualified and in production for automotive and industrial applications.
There are five members of the long-wire high-speed CAN transceiver family: AMIS-42670 (5V), AMIS-42671 (3.3V, auto-baud rate), AMIS-42673 (3.3V), AMIS-42675 (low power), and AMIS-42770 (CAN repeater).
Prices in quantities of 1000 range from Eur 0.90 to Eur 1.10 for the first four and Eur 2.05 for the repeater.
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