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U6268B 데이터시트

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U6268B Side-airbag Sensor Dual Interface Atmel
Atmel Corporation Atmel
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Description
The U6268B is an interface IC for remote automotive sensors. It links the crash sensors in the driver and passenger door with the main airbag unit in the dashboard. Two identical channels supply the external sensors and receive digital information from them via one active wire each. The interface supplies the external sensors with a preregulated smoothed voltage, the external units transmit the digital information back to the interface by current modulation.

Features
• Two Identical Interface Channels
• Pre-regulated Smoothed Voltage and a Supply Current up to 50 mA for the Sensors
• Data from the Sensors by Current Modulation with a Transmission Rate of 60 kBaud (Transmission Bandwidth 500 kHz)
• TTL-compatible Input Activates the Sensor
• Data Output Can be Directly Connected to a Microcontroller Input
• Operation Supply Voltage Range 5.7V ≤ VS ≤ 40V
• ESD Protection According to MIL-STD-883C Test Method 3015.7
• High-level EMI Protection

Benefits
• Simple Wiring Thanks to One Common Line for Supply of the Sensor and Data Transmission from the Sensor to the U6268B
• Current Modulation Provides High Noise Immunity for Data Transfer

 

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