Contact Person: Alan Lang
SNU501 is a interface chip for temperature and pressure sensor. The product is used for sensor specific correction of differential bridge sensor element signals and has the advantages of high accuracy and fast response speed. It has passed the AEC-Q100 standard certification. t can use in industrial or consumer environments .And also it is optimized for automotive environments by overvoltage and reverse polarity protection circuitry, excellent electromagnetic compatibility, and multiple diagnostic features.
Product Details
Key Features
Power Supply and Protection: The power supply voltage range is 4.5V - 5.5V. It supports over - voltage and reverse - connection protection up to ±20V, with an ESD HBM protection level of ±2000V and a Latch up protection level of ±200mA.
High - Resolution Conversion: It has two built - in high - resolution 24 - bit ADCs, which can accurately convert sensor signals.
Temperature Sensing: It has a built - in temperature sensor and also supports an external temperature sensor, which can perform temperature compensation for pressure measurement to improve measurement accuracy.
Output Interface: It supports multiple output interfaces, including SENT, absolute voltage, and proportional voltage, which can meet the connection needs of different systems.
Calibration and Storage: It has 256Bytes of OTP (One - Time Programmable) memory, which can be used to store calibration coefficients and other data, and supports multi - point calibration at multiple temperature and pressure points.
Wide Operating Temperature Range: It supports a wide operating temperature range of - 40°C - 150°C, which can adapt to various harsh environments.
Diagnostic Function: It supports high - low clamp detection and sensor abnormal diagnosis, and can output analog diagnostic voltage, which is convenient for system maintenance and debugging.
Technical Specifications
| Parameter | Specification |
| Type | Resistive |
| Channel | Single channel |
| Supply voltage | 4.5~5.5V |
| Supply current | 3mA |
| Operating temperature range | -40°C~150°C |
| Memory | 256Bytes (OTP) |
| Temperature sampling rate (Max) | 4.8kHz |
| Pressure sampling rate (Max) | 4.8kHz |
| ADC resolution | 24-bit |
| Analog output resolution (DAC) | 16-bit |
| Interface | SENT/Analog/I2C |
| Over-voltage and reverse polarity protection | ±20V |
| ESD HBM | ±2000V |
| Qualifications | AEC-Q100 Grade 0 |
