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Chip enhances LIN-based in-vehicle networking

Posted: 26 Apr 2007 ?? ?Print Version ?Bookmark and Share

Keywords:LIN transceiver? voltage regulator? in-vehicle networking?

AMI Semiconductor has introduced low-power, mixed-signal devices that combine LIN transceiver and voltage regulator functionality in a single chip for in-vehicle networking applications. The AMIS-40615 and AMIS-40616 devices are designed to help automotive design engineers improve the reliability while reducing the component count, power consumption and cost of LIN-based in-vehicle networking (IVN) applications.

Designed to interface between a LIN protocol controller and the physical bus, the AMIS-40615 and AMIS-40616 are compact devices offering 3.3V and 5V voltage regulation, respectively. The integrated LIN transceiver delivers transmission rates to 20Kbaud, is fully compliant with LIN v.2.0, and is backwards-compatible with previous versions of the LIN specification.

Both the 3.3V and 5V regulator functions are capable of supplying an external current up to 30mA. Enable inputs for standby and sleep modes ensure minimum power consumption when device operation is not required. Wake-up input commands can be via either the LIN bus or a dedicated wake-up pin. An INH output is provided for control of auxiliary functions such as external regulators or the switching of external pull-up resistors.

The AMIS-40615 and AMIS-40616 ICs achieve high performance results on a standard sub-micron CMOS 0.35?m mixed-signal SmartPower technology, which enables both high-voltage analog circuitry and a dense digital functionality to coexist in a single chip, said the company. The Smart Power technology also provides protection against load dump (to 45V), and high ESD protection to 8kV. Other standard features include indefinite shortcircuit protection between supply and ground, a thermal shutdown capability and an integrated slope control function to ensure low electromagnetic emission (EME).

Supplied in 14-pin SOIC packages, the AMIS-40615 and AMIS-40616 are designed to work in harsh automotive environments in accordance with the TS16949 automotive qualification. The rated operating temperature is -40C to 105C. Target applications include remote keyless entry, electronic steering locks, alarms, window controls, mirror positioning, seat movement and other automotive systems.

The AMIS-40615 and AMIS-40616 devices are priced at 73 cents in volumes up to 5,000.

- Gina Roos

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