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Melexis Time of Flight Imager for Automotive Applications

3 490 €

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Yole Melexis MLX75023 Automotive 3D ToF Imager System Plus Consulting cover flyer

A cutting-edge ToF imager technology from Sony/Softkinetic, adapted by Melexis for automotive in-cabin applications

Today, Time-of-Flight (ToF) systems are among the most innovative technologies offering imaging companies an opportunity to lead the market.

Every major player wants to integrate these devices to provide functions such as 3D imaging, proximity sensing, ambient light sensing and gesture recognition.

Sony/Softkinetic has been investigating this technology deeply, providing a unique pixel technology to several image sensor manufacturers in three application areas: consumer, automotive and industrial.

For automotive applications, Sony/Softkinetic has licensed its technology to Melexis, which has worked on the pixel design to provide a ToF imager for gesture recognition.

 Yole Melexis MLX75023 Automotive 3D ToF Imager System Plus Consulting 2


The MLX75023 is an automotive 3D ToF Imager already integrated into gesture recognition systems from car makers like BMW. The 3D ToF Imager is packaged using Glass Ball Grid Array technology.

The device comprises the die sensor and the glass filter in the same component in thin, 0.7 mm-thick, packaging.

yole Melexis MLX75023 Automotive 3D ToF Imager cover System Plus Consulting


This report analyzes the complete component, from the glass near-infrared band pass filter to the collector, based on the ToF pixel technology licenses developed by Softkinetic and improved by Melexis.

The report includes a complete cost analysis and price estimation of the device based on a detailed description of the package, and the ToF imager.

It also features a complete ToF pixel technology comparison with Infineon, STMicroelectronics and Texas Instrument ToF imagers, which are also based on Sony/Softkinetic technology, with details on the companies’ choices.

Yole Melexis MLX75023 Automotive 3D ToF Imager System Plus Consulting

Table of contents

Overview / Introduction


Melexis Company Profile and Time of Flight Technology


Physical Analysis

> Physical Analysis Methodology
> Package
- View and dimensions
- Package opening 
- Package cross-section: optical filter, RDL, bumps

> Image Sensor Die 
- View, dimensions and marking
- Die overview: active area, CPAD technology
- Die delayering, main block ID and process
- Cross-section: metal layers, pixel
- Process characteristics



Physical Comparison with Infineon’s ToF Image Sensor, STMicroelectronics’ SPAD technology and Texas Instruments’ Industrial ToF Image Sensor

> Package, Pixels, Filters













































Manufacturing Process Flow 

> Overview
> CIS Front-End Process
> CIS Wafer Fabrication Unit
> Packaging Process Flow
> Final Assembly Unit


Cost Analysis

> Cost Analysis Overview
> The Main Steps Used in the Economic Analysis
> Yield Hypotheses
> CIS Die Cost
- Front-end cost
- Back-end: tests and dicing
- Wafer and die cost

> Component
- Packaging cost
- Packaging cost by process step
- Component cost



Estimated Price Analysis

About the authors


System Plus Consulting specializes in the cost analysis of electronics, from semiconductor devices to electronic systems.

Created more than 20 years ago, System Plus Consulting has developed a complete range of services, costing tools and reports to deliver in-depth production cost studies and estimate the objective selling price of a product.

System Plus Consulting engineers are experts in:

  • Integrated Circuits 
  • Power Devices & Modules 
  • MEMS & Sensors
  • Photonics 
  • LED 
  • Imaging 
  • Display 
  • Packaging 
  • Electronic Boards & Systems.

Through hundreds of analyses performed each year, System Plus Consulting offers deep added-value reports to help its customers understand their production processes and determine production costs. Based on System Plus Consulting’s results, manufacturers are able to compare their production costs to those of competitors.

System Plus Consulting is a sister company of Yole Développement.

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  • Detailed photos and cross-sections

  • Precise measurements

  • Material analysis
  • Manufacturing process flow

  • Supply chain evaluation

  • Manufacturing cost analysis

  • Estimated sales price

  • Comparison with AT&S Embedded Component Technology (ECP)