LM9011

LM9011 Electronic Ignition Interface February 2000 LM9011 Electronic Ignition Interface General Description The LM9011 is an interface circuit which integrates the timing detection and logic control functions required for an automotive electronic ignition system into one device. A VRS interface is provided for crankshaft position information via a toothed-wheel. Four voltage comparators are provided for hardware diagnostics. An electronic timing interface with output fault diagnostics is provided to enable a micro-processor to drive an external four channel ignition spark circuit. The LM9011 is fully specified over the automotive temperature range of -40˚C to +125˚C, and is available in a 28 pin Small Outline surface mount package. Key Specifications Features n Single 5V supply operation n VR Sensor Interface with dynamic hysteresis n Four Channel Electronic Timing spark driver with output diagnostics n Electronic Timing Interface spark driver output voltage from 5V to 16V n One Non-Inverting voltage comparator with hysteresis n Three Inverting voltage comparators with hysteresis Connection Diagram Top View DS101264-1 Ordering Information LM9011M See NS Package M28B © 2000 National Semiconductor Corporation DS101264 www.national.com LM9011 Absolute Maximum Ratings (Note 1) Voltage S_HI Voltage VR_HI and VR_LO Inputs Comparator Inputs Timing Interface Inputs ESD Susceptibility (Note 3) Maximum Junction Temperature Storage Temperature Range Lead Soldering Information...