Molex2047490013 | Molex External ANC SensorsSpezialsensor

Percept Road Noise Cancelling (RNC) Sensor Assembly

Vehicle sensing solutions from Molex enable automotive OEMs to usher in a new era of safer, more enjoyable driving experiences. Molex has created a family of Noise Canceling Sensors, utilizing A2B, that capture sound waves to reduce road noise commonly masked by a combustion engine.

Road Noise Cancellation Sensors (RNC) reduce noise within the vehicle cabin. The sensors convert vehicle chassis vibration in a signal that generates a cancellation soundwave, increasing comfort and improving the driver/passenger experience, acting like road noise barriers. Both the Interior and External Acoustic Noise Cancellation (ANC) Sensors, which are phantom-powered slave units employing differential pairs, convert airborne noise into digital electrical signals, creating cancellation soundwaves. Molex sensors also deliver reduced wire harness weight by more than 30% compared to other active noise cancellation systems, because the components are daisy-chained by twisted-pair discrete cabling and Mini50 Sealed Connectors.

As a top automotive solutions provider, Molex develops and enables technology that meets ever-changing customer connectivity needs. Arrow delivers Molex products to help engineers develop solutions for the design trends defining the automotive industry, like zonal architecture, miniaturization, and wireless connectivity.

Mates With/Use With

Mini50 Connectors - 0349674001

Features & Benefits

• •  Low system latency
• •  IP6K9K Rating
• •  Daisy-chained sensors
• •  Mates with 1x4 sealed Mini50 Connector

Applications

• •  Medical
• •  In-cabin noise reduction
• •  Autonomous vehicles
• •  Advance driver assistance systems (ADAS)

Specifications

• •  Microphone Technical Specifications
• •  Very low distortion: < 1% Total harmonic distortion + noise @ 1kHz
• •  Acoustic overload point: 133 dB
• •  Sensitivity: -46 +/- 2 dBFS @ 1kHz
• •  Noise floor: 29 dBSPL
• •  High signal-to-noise ratio: 65dB(A)
• •  Bandwidth: 45 Hz to >20kHz
• •  Omnidirectional

• •  Mechanical Technical Specifications
• •  Connector interface drawing:
• •  Molex drawing 349684800
• •  Mini50 Sealed 1x4 – see ordering information
• •  Installation force into vehicle position should not exceed 25N.
• •  Retention force greater than 15N prior to nut and screw fastening
• •  Retained in place by M6 screw and nut
• •  The torque value of screw and nut shall be 10±2Nm

• •  Environmental
• •  Temperature classification: -40° to 85°C
• •  Protection classification: IP6K9K (dust and high-pressure spray) per ISO 20653

• •  Harnessing Expectations
• •  2x jacketed unshielded twisted pairs for
• •  100 Mbps transmission
• •  Twisted pair cable types must comply with
• •  SAE-J3117 standard and the Open Alliance
• •  Specification for Communication
• •  Channel 2.0 = equivalated to 100BaseT1
• •  Digital matched differential impedance –
• •  100 Ohms
• •  Sensor units are daisy-chained together