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AAC Acoustics MEMS microphone Reverse Costing Analysis

Abstract

Physical Analysis of the Device Step by Step Reconstruction of the Process Flow Cost of Manufacturing and Estimation of Selling Price

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System Plus Consulting is publishing a reverse costing report on the microphone from AAC Acoustics available in the Apple Iphone4 smartphone.

This device is an analog MEMS Microphone using a free-floating diaphragm, and a capacitive sensing.

It offers a full integration of a MEMS microphone and an amplification ASIC, both provided by Infineon, in a 3-pin LGA package.

This microphone is for consumer applications: smartphones, cellphones.

The report provides complete teardown of the microphone MEMS with:

  • Detailed photos
  • Material analysis
  • Schematic assembly description
  • Manufacturing Process Flow
  • In-depth economical analysis
  • Manufacturing cost breakdown
  • Selling price estimation

Table of Contents

1. Overview / Introduction

  • Executive Summary
  • Reverse Costing Methodology

2. Company Profile

  • AAC Acoustics

3. Physical Analysis

  • Package Characteristics & Markings
  • iPhone - Microphone MEMS
  • Package X-Ray
  • Package Composition
  • Package Opening & Bonding Number
  • Package Cross-Section
  • ASIC Markings and Dimensions
  • ASIC Minimal Dimension and Metal Layers
  • ASIC Process Characteristics
  • Microphone Markings & Dimensions
  • Microphone Details
  • Microphone Structure
  • Microphone Cross-Section
  • Microphone process characteristics

4. Manufacturing Process Flow

  • ASIC Process Flow
  • Microphone Process Flow
  • Package Process Flow
  • Wafer Fabrication Units

5. Cost Analysis

  • Supply Chain Analysis
  • ASIC Wafer Cost
  • ASIC Die Cost
  • Microphone Wafer Cost Hypothesis
  • Microphone Wafer Cost
  • Microphone Die cost
  • SM0401 Packaging Process Flow
  • SM0401 Packaging Cost Details
  • SM0401 Final Test Cost
  • SM0401 Component Manufacturing Cost
  • Yield Synthesis

6. Estimated Manufacturer Price Analysis

  • Manufacturers ratios
  • Estimated manufacturer Price
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