The L9966 is an automotive grade IC designed to be used as sensors interface. Up to 15 channels are available for analog sensing, resistance measurement and digital sensing (e.g. temperature, lambda, pressure, position sensors).
The L9966 allows replacing a number of discrete components and it gives the possibility to change the sensors across different applications without modifying the PCB hardware.
Target applications are Engine Control Units and Body/Chassis Modules.
12 V and 24 V systems compatible (operating battery supply voltage 5.5 V-36 V)
Programmable interface with 15 total inputs:
12 for connection to external analog loads (with connection to VVAR, VDD5 and clamped battery VPRE, with resistance measurement)4 with also λ sensor functionality4 with also SENT functionality
3 for connection to external digital switches (with connection to VPRE)
Programmable pull-up/down current sources
Integrated precise resistance measurements
12 bit ADC for voltage measurements
15 bit ADC for resistance measurements
Variable reluctance sensor / Hall sensor Interface
1 analog output channel + 4 digital output channels
SPI interface for device configuration and data communication