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MLX16303 Dataheets PDF



Part Number MLX16303
Manufacturers Melexis Microelectronic Systems
Logo Melexis Microelectronic Systems
Description Bi-directional Remote Sensor Unit Interface
Datasheet MLX16303 DatasheetMLX16303 Datasheet (PDF)

MLX16303 Bi-directional Remote Sensor Unit Interface Features and Benefits Two identical interface channels for remote sensor units Two connection modes: connection to OUTx and RETx or connection to OUTx and GND pin 16 bit Standard SPI for control and diagnosis via a microcontroller Supply voltage for each remote unit with a supply current up to 45mA Current limitation with an analog feed back loop for each channel Receive data from the remote unit by current modulation with a transmission rate .

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MLX16303 Bi-directional Remote Sensor Unit Interface Features and Benefits Two identical interface channels for remote sensor units Two connection modes: connection to OUTx and RETx or connection to OUTx and GND pin 16 bit Standard SPI for control and diagnosis via a microcontroller Supply voltage for each remote unit with a supply current up to 45mA Current limitation with an analog feed back loop for each channel Receive data from the remote unit by current modulation with a transmission rate of 10kHz Transmission of data to the remote unit via PWM voltage pulses Data input/output can be directly connected to a microcontroller input/output (CMOS) Low current consumption All pins to the external interface are short-circuit and high-voltage protected High immunity against cross coupling between the two channels The current modulation provides high noise immunity for data transfer www.DataSheet4U.com Application Remote automotive sensors (between ECU and sensors). Ordering Information Part No. MLX16303 Temperature Suffix E (-40° C to 85° C) Package Code DC (SOIC16, 150 mil) 1. Functional Diagram Diagnosis circuit (Temperature, short circuit, open circuit) 2. Description This interface IC is designed for remote automotive sensors, especially between a main ECU and remote (sensor) units. It contains two identical interfaces and the main task of each interface is to supply one remote unit and to receive digital information from the same remote unit. It is also possible to send data as PWM voltage pulses to the remote unit, for example to program the remote unit for its special application. This is done by one active wire: the interface supplies the external unit with a pre-regulated voltage, the external unit transmits the digital information back to the interface by current modulation. A continuous diagnosis of the IC is running in the background. The diagnosis results can be requested by a microcontroller using the SPI interface. SSIO0 Transceiver for current conversion or for sending PWM pulses OUT0 Remote unit driver RET0 Vdd Vs Vp GND0 Voltage supply Power on reset Current reference Transceiver for current conversion or for sending PWM pulses OUT1 Rtrip SSIO1 Remote unit driver RET1 GND1 16 bit SPI interface CLK CS DI DO 3901016303 Rev. 004 Page 1 of 20 Data Sheet Jun/04 MLX16303 Bi-directional Remote Sensor Unit Interface TABLE OF CONTENTS FEATURES AND BENEFITS ....................................................................................................................... 1 www.DataSheet4U.com APPLICATION .............................................................................................................................................. 1 ORDERING INFORMATION......................................................................................................................... 1 1. 2. 3. 4. 5. 6. 7. 8. 9. FUNCTIONAL DIAGRAM................................................................................................................... 1-1 DESCRIPTION.................................................................................................................................... 2-1 ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 3 MLX16303 ELECTRICAL SPECIFICATIONS ...................................................................................... 6 GENERAL DESCRIPTION .................................................................................................................. 11 UNIQUE FEATURES........................................................................................................................... 18 RELIABILITY INFORMATION............................................................................................................. 19 ESD PRECAUTIONS........................................................................................................................... 19 DISCLAIMER ....................................................................................................................................... 20 3901016303 Rev. 004 Page 2-2 of 20 Data Sheet Jun/04 MLX16303 Bi-directional Remote Sensor Unit Interface 3. Absolute Maximum Ratings All voltages are referenced to the GND pins potential if no other voltage potential is mentioned. Parameter Supply Voltage at VS Supply Voltage at VDD www.DataSheet4U.com Programming Voltage at VP ( the 40V can only be present during load dump (< =400 ms) otherwise the max voltage will be 24V for 2 minutes ) Voltage at OUT0, OUT1 ( the 40V can only be present during load dump (< =400 ms) otherwise the max voltage will be 24V for 2 minutes ) Voltage at RETURN0, RETURN1 Supply Current at VS (worst case) ( I vs max = [ Isrc OUTO max = Isrc OUT1 max] *1.1, the factor 1.1 includes the internal current consumption) Supply Current at VS ( under condition that it is guaranteed by SW that never both channels.


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