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Melexis MLX91802 Absolute Pressure Sensor
Oct.2016

melexis_mlx91802_pressure_module_system_plus_consulting
2 990 €

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Description

Melexis MLX91802 Pressure flyer

An absolute pressure sensor used in car and truck tire pressure monitoring systems for harsh environments

The Melexis MLX91802 is an absolute pressure sensor used in industrial and automotive applications for harsh environments (-40°C to 150°C), particularly in tire pressure monitoring systems (TPMS) for cars and trucks, with a pressure range of up to 1,400 KPa. The Melexis ASIC die integrates an LF transmitter at 125 KHz to facilitate the integration of the MLX91802 in a TPMS.

It is easy to use with either the factory calibration, Melexis’ firmware, or custom firmware, and is compatible with other integrated functions like the temperature sensor and battery monitoring.

Melexis MLX91802 Pressure Module Sensor System Plus Consulting

This Melexis-designed MEMS pressure sensor is based on very reliable technology, with a thick membrane and a sealed cavity. Melexis’ smart packaging approach makes it easy to integrate into a system, and it is inexpensive. The absolute pressure measurement uses a soft coating rather than complex packaging with manifolds.

This report presents a detailed analysis of sensor structure and cost, as well as a characteristics comparison between Infineon’s SP37, Freescale’s FXTH87, and Melexis’ MLX91802, highlighting the different technical choices made by each company.

 

  Melexis MLX91802 Pressure Module System Plus Consulting 2

 

 

 

 

 

 

 

  

Table of contents

Overview / Introduction


 

Company profile & Supply Chain


> Melexis
> X-Fab
> MLX91802 Characteristics

 

 

Physical Analysis


> Physical Analysis Methodology

> Package
- Package views, dimensions, and pin out
- Package opening & wire bonding process
- Package cross-section
> ASIC
- View, dimensions & marking
- Delayering
- Main blocks’ identification
- Process identification
- Cross-section
- Process characteristics
> MEMS Pressure Sensor
- View, dimensions, and marking
- Sensing area details
- Cross-section
- Piezoresistors
- Process characteristics

 

 

Comparison with Infineon’s SP37 and Freescale’s FXTH87Analysis


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manufacturing Process Flow


> Global Overview
> ASIC Front-end Process
> ASIC Wafer Fabrication Unit
> MEMS Pressure Sensor Process Flow
> MEMS Wafer Fabrication Unit
> Packaging Process Flow & Assembly Unit

 

 

Cost Analysis


> Synthesis of the Cost Analysis
> Main Steps of the Economic Analysis
> Yields Explanation & Hypotheses
> ASIC Die
- ASIC front-end cost
- ASIC probe test & dicing cost
- ASIC wafer & die cost
> MEMS Pressure Sensor Die
- MEMS pressure sensor front-end cost
- MEMS pressure sensor cost per process steps
- MEMS pressure sensor probe test & dicing cost
- MEMS pressure sensor wafer & die cost
> Back-end: Final Test & Calibration Cost
> MLX91802 Component Cost

               

                              

Estimated Sales Prices


 

 


About the authors



ABOUT SYSTEM PLUS CONSULTING

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.

More info at www.systemplus.fr 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REVERSE COSTING WITH

  • Detailed photos

  • Precise measurements

  • Material analysis

  • Manufacturing process flow

  • Supply chain evaluation

  • Manufacturing cost analysis

  • Estimated sales price

  • Comparison with Infineon’s SP37 and Freescale’s FXTH87