Contact Person: Alan Lang
SNS409 is a single chip solution for automotive ultrasonic sensor module application with a very small package. Based on TOF measurement it can provide the obstacle distance. Per excellent low noise performance and stable high range gain adjustable featur
Product Details
SNS409 is a single chip solution for automotive ultrasonic sensor module application with a very small package. Based on TOF measurement it can provide the obstacle distance. Per excellent low noise performance and stable high range gain adjustable features, it could support short distance to 15cm and long distance to 5m with perfect matching circuit with the specific transducer for the high performance required system like APA and PAS. It has auto gain and auto threshold functions which could support customers a short time to market module. These functions could save a lot of calibration effort.
Key Features
Broad Measurement Range: Supports distance detection from 0.15m to 5m when paired with a matching transducer, covering both short-range and long-range sensing needs .
High Integration & Compact Design: All-in-one solution integrating temperature sensor, EEPROM for long-life cycle operation, and JTAG test mode support, housed in a tiny QFN 20 package (4x4mm) .
Flexible Programmability:
Transducer frequency: 30kHz to 83kHz
Driver current: 168mA to 354mA (programmable)
Driver pulse count: 4 to 32 pulses (adjustable)
Receiver analog gain: 39.2dB to 56dB
Receiver digital gain: 0dB to 47.89dB
Automated Calibration: Built-in Auto Gain Control (AGC) and Auto Threshold functions eliminate complex manual calibration, reducing development effort.
Comprehensive Diagnostics: Features noise detection, over-voltage/under-voltage protection, resonance frequency out-of-range detection, and first echo height monitoring for enhanced system reliability.
Robust Performance:
Wide operating voltage: 6V to 18V (max 40V surge tolerance)
Extended temperature range: -40°C to 105°C
AEC-Q100 qualified, ensuring automotive-grade durability .
Simplified Communication: Single-wire communication interface enables easy integration with host systems.
| Operation voltage | 6V~18V (max: 40V) |
| Measure distance | 0.15~5m (with perfect matching circuit) |
| Transducer frequency | 30k~83kHz |
| Programmable driver current | 168~354mA |
| Programmable driver pulse number | 4~32pulse |
| Programmable receiver analog gain | 41.6~58.4dB |
| ADC | 14bit |
| Programmable receiver digital gain | 0~47.89dB |
Why Choose SNP409?
Automotive-Grade Reliability: AEC-Q100 qualification ensures stable performance in harsh automotive environments.
Cost-Effective Integration: High integration reduces BOM complexity and overall system cost.
Rapid Development: Automated calibration and simplified interface cut down module development time.
Versatile Compatibility: Supports a wide range of transducers and operating conditions, adapting to diverse application needs.
Proven Performance: Trusted by leading manufacturers for critical safety and sensing systems.
