Overview
The L9966CB-TR, produced by STMicroelectronics, is an automotive-grade IC designed to serve as a versatile interface for various sensors. This FlexInput IC is compatible with 12 V and 24 V systems, operating within a supply voltage range of 5.5 V to 36 V. It is AEC-Q100 qualified, ensuring reliability and performance in harsh automotive environments. The L9966CB-TR features up to 15 input channels, which can be configured for analog sensing, resistance measurement, and digital sensing, making it a comprehensive solution for integrating multiple sensor types into automotive systems such as Engine Control Units and Body/Chassis Modules.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Voltage - Supply | Operating battery supply voltage | 5.5 V - 36 V |
| Number of Channels | Total input channels available | 15 |
| Resolution | ADC resolution for voltage and resistance measurements | 12-bit (voltage), 15-bit (resistance) |
| Analog Inputs | Channels for connection to external analog loads | 12 |
| Digital Inputs | Channels for connection to external digital switches | 3 |
| SENT Functionality | Channels with SENT functionality | 4 |
| λ Sensor Functionality | Channels with λ sensor functionality | 4 |
| ADC Type | Type of ADC used for measurements | 12-bit and 15-bit ADC |
| Interface | Communication interface | SPI |
| Operating Temperature | Operating junction temperature range | -40 °C to 150 °C |
| Thermal Resistance | Junction-to-case thermal resistance | 3 K/W |
Key Features
- Programmable Interface: The L9966CB-TR features a programmable interface with 15 total inputs, allowing for flexibility in connecting various types of sensors and loads.
- Integrated Resistance Measurements: The IC includes integrated precise resistance measurements with a 15-bit ADC, enhancing its capability for accurate sensing.
- SENT and λ Sensor Functionality: Four channels support SENT and λ sensor functionalities, making it suitable for advanced automotive sensor applications.
- Variable Reluctance Sensor/Hall Sensor Interface: The IC supports variable reluctance sensor and Hall sensor interfaces, adding to its versatility in sensor integration.
- Analog and Digital Outputs: It includes one analog output channel and four digital output channels, facilitating diverse output requirements.
- Overtemperature Protection: The L9966CB-TR features overtemperature protection to ensure reliable operation under various conditions.
- ESD Protection: The IC is designed with ESD protection according to Human Body Model (HBM) and Charged Device Model (CDM) standards, ensuring robustness against electrical surges.
Applications
The L9966CB-TR is primarily targeted for use in automotive systems, particularly in:
- Engine Control Units (ECUs): It is used to interface with various sensors and actuators in engine control systems.
- Body/Chassis Modules: The IC is also suitable for body and chassis control modules, where it can manage multiple sensor inputs and provide precise measurements).
Q & A
- What is the operating voltage range of the L9966CB-TR?
The L9966CB-TR operates within a supply voltage range of 5.5 V to 36 V).
- How many input channels does the L9966CB-TR have?
The L9966CB-TR has up to 15 input channels available for analog sensing, resistance measurement, and digital sensing).
- What types of ADCs are used in the L9966CB-TR?
The IC uses 12-bit ADC for voltage measurements and 15-bit ADC for resistance measurements).
- Does the L9966CB-TR support SENT functionality?
- What is the thermal resistance of the L9966CB-TR?
The junction-to-case thermal resistance of the L9966CB-TR is 3 K/W).
- Is the L9966CB-TR AEC-Q100 qualified?
- What types of sensors can be interfaced with the L9966CB-TR?
The L9966CB-TR can interface with variable reluctance sensors, Hall sensors, and other types of analog and digital sensors).
- Does the L9966CB-TR have overtemperature protection?
- What is the operating temperature range of the L9966CB-TR?
- What communication interface does the L9966CB-TR use?
