Exhibit 99.5
Header of all slides
[Logo] Microsemi
more than solutions - enabling possibilities
Analyst Day 11/7/2001
http://www.microsemi.com
Slide 1
Managing Sound
Mike Tanaka, Product Marketing - Audio Products
Slide 2
Disclaimer
. Some of the information in this presentation may contain projections or
other forward-looking statements regarding future events or the future
financial performance of Microsemi Corporation.
. We wish to caution you that these statements are only predictions and that
actual events or results may differ materially. We refer you to the
documents the company files from time to time with the Securities and
Exchange Commission, specifically, the Company's most recent Form 8-K, 10-K
and Form 10-Q.
. These documents contain and identify important factors that could cause the
actual results to differ materially from those contained in our projections
or forward -looking statements.
. Amounts shown are estimates of projected revenue growth from new products.
These estimates represent the average of the range of company estimates
developed from external market research data, as well as internal company
market and product forecasts. Amounts could change due to changes in market
conditions, customer acceptance and other factors, whether known or unknown
to the company at this time. Please refer to Microsemi Safe Harbor
Statement.
Slide 3
Agenda
. Audio Terms
. Amplifier Classes
. Linear vs. Class-D
- Efficiency, Power Consumption, Distortion
. Market Size
. Applications
. Class-D Amplifier Competition
. Products
. Roadmap
. Market Update
. Summary - Microsemi is the Class D Leader
Slide 4
Audio Term -Frequency Spectrum
. The frequency of an AC wave is the number of times per second that the wave
makes a complete cycle from zero, through to its maximum positive value,
through its maximum negative value, and back to zero.
. Expressed in cycles per second (Hz)
. 10,000 cycles per second = 10kHz
. Frequency range of the human ear is 20Hz to 20kHz.
. The complex sound wave is made up of many simple sinusoidal audio waves.
Audio (20-20kHz) Microwaves
<-------------> <-------------->
VHF (30M-300MHz)
<--->
UHF (300M-3000MHz)
<------->
To Heat Waves,
-----> Light Waves,
X-Rays
<------------------------------------------------------------------------------>
10 100 1k 10k 100k 1M 10M 100M 1,000M 10,000M 100,000M (Hz)
Slide 5
Audio Term - Distortion
. The type of change the signal undergoes from input to output.
. THD + N = Total Harmonic Distortion (plus noise)
. The sum total of all undesired harmonic energy present in an output signal
(expressed as a % of the total
output signal).
- pure sine wave input, measure output
. Hum, buzzing, interference, other harmonics
. Three types of distortion
- amplitude: input signal amplitude changes do not produce proportionate
output changes
- frequency: some frequency components are amplified more than others
- phase : various frequency components are shifted in phase by different
amounts
[three graphs of audio input and output]
Slide 6
Amplifier Classes
. Output voltage swing/Input voltage swing relationship
. Output stage design
. Based on the amount of time the output devices operate
Amplifier Amplifier Output Transistors Advantages Disadvantages Comments
Classes Type
- -------- ------------------- ------------------------------- --------------------- --------------------- ---------------------
Class A Linear Always conducting for Sound the best, most Waste power, most Only 10% of
entire cycle: bias current > linear, lowest inefficient (~20% the "high end"
max output current. distortion. efficiency), large/ market
heavy, run hot.
Class B Linear Opposite operation of Better efficiency Poor linearity around Not used in
Class A. Both devices than Class A. crossover region, audio. Two
are never "on" at same audible crossover way radio.
time. Zero idle bias distortion with
current. Each output small signals
device is "on" for one
half cycle.
Class C Linear Output device is "on" Class B efficiency. Distortion. Not used in
for less than one half cycle Capable of large audio. Broadcast
(pulsed-on). output power. industry for
RF transmission.
Class AB Linear Combines Class Class A sound Power dissipation Most popular
A & B. Mid- quality with good as heat. 50% audio amp
conduction, constant efficiency. efficiency. design.
bias current Dominate the
(barely on). Market.
Class D Switching Switch is fully Best efficiency Old design were Use pulse
"on" or "off", 80% to 90%. limited to less than modulation.
P = I x V = 0. 10kHz. Not as good THD.
Slide 7
Class D vs Linear - Efficiency
. Efficiency (1kHz tone):
- Linear amp = 55%
- AudioMAX/TM/ = 85%
. Efficiency comparison using "real music":
- Linear amp = 14%
- AudioMAX/TM/ = 60%
. AudioMAX/TM/ is 4x more efficient than a linear amplifier in actual
application
Efficiency Comparison of the Class-D Amplifier
-----------------------------------------------------------------------
100 | - Average Power Out for 20sec. Approx. 512mW
| - Across 8.6 Ohm Load
| [Microsemi Logo]
80 |
| /\ / / \/ \ /\/ /\ /\
| /\ / \ / / /\/ \\ \/ //\//\ ///\ \ / \\ /\ \/ /\ /\/ / /
| /\ / \ / / /\ / \ \ \/\ // \/ / \ ./\ /\ // \ \/ // / //
60 | / \ \ / // \ \ / \///\\/\ // /\ // \ .\\\ /// / | \ \/ \ //\/
| /\ / \ // | /\\/// \\/\/\/\\ \/ \ / \/ \///
40 | / \ \ / \/ / \\//\ \/\/ \/ \/ \/\
| / \/ \/ \/\
| /
20 | / pp p p p p p p p p p p
| / p p p p p p p pp p p p p p
| / p p p p
0 -----------------------------------------------------------------------
0 5 10 15 20
Seconds
Audio sample from "Hold On Tight"
By Electric Light Orchestra
/ = Microsemi Class-D Amplifier
p - Highly Integrated Linear Amplifier
Slide 8
Current Consumption
. Supply current vs. output power (listening level of 1W RMS per channel) :
- Linear amp = 550mA
- AudioMAX(TM) = 100mA
. AudioMAX(TM) uses 5x less current than a linear amplifier in actual
application
Total Supply Current (A) 1.4
1.2 o
Vcc = 14.5V o
1.0 Rl = 4ohm o
o
0.8 o
o
0.6
o
x
0.4
x
o x
0.2 o x
x
x
0 x
----------------------------------------
0 1 2 3 4 5 6
Output Power / Channel (W)
x = Microsemi [Logo] Class-D Amplifier
o = Typical Linear Amplifier (TPA 1517
specification shown here)
Slide 9
Power Loss Comparison
. Power dissipation (2W RMS continuous output per channel):
- Linear amp = 6.5W
- AudioMAX(TM) = 400mW
. AudioMAX(TM) uses 6W RMS less power than a linear amplifier in actual
application
Total Power 7 o
Dissipation (W) o o
6 o
o
o
5 o
Vcc = 14.5V
4 o Rl = 4ohm
3 o
o
2
o
1
x
x
x
x
x
--------------------------------------------------
0 1 2 3 4 5 6
Output Power / Channel (W)
x = Microsemi [Logo] Class-D Amplifier
o = Typical Linear Amplifier (TPA 1517
specification shown here)
Slide 10
Linear vs. Class-D Amplifiers
Linear AudioMAX(TM)
Class-A, B, C Class-D
--------------- --------------
Efficiency (1kHz) 50%-60% 80%-90%
Heatsink Required Optional
Approximate # of components 10-15 35-45
for mono application
IC average selling price $0.30 - $0.80 $1.50 - $2.00
Miscellaneous issues Needs larger power supply EMI radiation due to switching
Slide 11
Audio Market Potential
. TAM for Audio Amplifiers at least 2.5 billion units
. SAM (for Class D solutions) 100 million pcs/year
- Battery powered (PDA/Laptop), Size (DVD), Heat (Auto)
. Applications using or planning on using Class D
- CY02 - 6-10% estimate
- CY03 - 15-20% estimate
- CY04 - 25-35% estimate
. Microsemi Market Share Goal for Class D Audio:
----
- Low Power (in development, goal is 2%)
-- TI , NSC, MXIM own this space
- Medium Power (~30%)
-- Tripath (switching freq problems), Zetex (mono only, more
circuitry)
- High Power (~15%)
-- Tripath, Cirrus (relationship IRF helps)
. Note: Analysis does not cover Hearing Aid market
Slide 12
Applications: Efficiency is key
Applications Need for Existing or Potential Customers
Class D
- ------------------------------ -------- --------------------------------------------------------------
Multimedia, Powered PC Speakers, Altec Lansing, Boston Acoustics,
Surround Sound Game Systems, High Creative, Cambridge Soundworks,
Sound Cards Labtec, Weltronics
Combo DVD, 5.1 Systems, Home High Japan, China, Bose, Harman, Sony
Theatre
Automotive (head unit, amp, Medium Alpine, Blaupunkt, Zandiant, Delco, Jensen,
subwoofer) Panasonic, Rosen, Visteon, Zapco
Portable Speaker, Wireless Speakers Ideal Advent, Harman (JBL), Recoton, Aqua
Sound, Terion
Niche Audio Systems Ideal Clarity Visual (large screen), M&S Systems
(home music communication system),XL Synergy
(Bose kiosk)
Amp, Guitar, Keyboards Low Peavey, Fender
TV Low/Medium Sony, Zenith, MOT set-top
Portable Audio (PDA, MP3) Low/Medium Palm, Intel, HP, Compaq
Notebook, Desktop Computer Medium Various
[picture of stereo receiver]
[picture of audio equipment]
[picture of game machine]
Slide 13
Class D Competition
Digital Input Analog Input(low power) Analog Input (mid power)
-------------------- --------------------------- --------------------------
Apogee, Cirrus Logic Maxim, National, Microsemi, Tripath,
(Crystal), TI (Toccata) STMicro, TI Zetex
Output Power
Various Levels, Some 1W / 10W 25W / 50W+
Limited
Cost $6/channel $1.50/channel $1.50/channel
Circuit Complex, DSP based Simple, Integrated FET Simple
Fidelity (THD) 0.08% (Mixed Reviews) 0.1% - 0.5% 0.04% - 0.1%
Digital Input: Higher cost, more complex design, questionable fidelity
Analog Input (low power): Integrated, but limited output power
Slide 14
Medium Power - Competition
Microsemi Tripath Zetex Competition
----------------- ---------------- ----------- ---------------
Max Vdd 25V 13.5V 18V Limited Output Power
Frequency 250kHz - 500kHz 1MHz 150kHz-250kHz AM band, EMI, reduced
Programmable efficiency
Efficiency 80%-85% Rated at 88% 80%-85% 70% from Lab evaluation of
Tested to be 70% TA2020
-need heatsink
FETs/Components External Integrated External plus No cost benefit with
additional circuitry integrated FETs
Channels Mono/Stereo Stereo Mono Need more IC's for
multi-channel
Slide 15
Patented Class-D Controllers
LX1710 / 1711 LX1721 / 1722
---------------- -------------
Channels mono stereo
Package 28-SSOP 44-QSOP
Operating V 7-15 / 7-25 7-15 / 7-25
Audio Input differential differential
Improvements ramp, references output drive
[schematic of controllers] Channel 1, IN+, IN-, LX1722 Stereo, Channel 2, IN+,
IN-, Clock, LX1711 Mono, channel 3, IN+, IN-, FETs,
Left, FETs, Right, 2ohm, 4ohm, 8ohm, FETs, Subwoofer
Slide 16
Ease of using MSCC Audio
Evaluation Boards
[picture of LXE1710]
[picture of LXE1711]
[picture of LXE1711-100 Buffer]
[picture of LXE1721]
[picture of LXE1721-HV Driver]
[picture of LXE1722]
Slide 17
Medium/High Power Solutions
IC Evaluation Boards Typical Output Power Typical Output Power
(4ohm, less than 1% THD+N) (2ohm, less than 1% THD+N)
- ------- ------------------- -------------------------- --------------------------
LX1710 LXE1710 25W ~40W
LX1711 LXE1711 50W ~50W
LX1711-100 Buffer 60W 120W
LX1721 LXE1721 25W x 2 ~40W x 2
LX1721-HV Driver 50W x 2, 250W x 1 400W
LX1722 LXE1722 60W x 2 120W x 2
Typical Output Power, less than 1% THD+N
[picture of Altec Lansing Speakers]
[picture of IBM FlatPanel Speakers]
Slide 18
Audio Roadmap
. Low Power Solutions
- 5 new products in development
. Medium Power Solutions
- 2 new products in development
. High Power Solutions
- 1 new product in development
. Roadmap established for all digital solutions
Slide 19
Market Update
. The Market is ready and designing in Class-D Amplifiers
. North America
- Manufacturers rapidly adopting Class D as preferred solutions
- Over 5 Design wins in last 30 days
. Asia
- China
-- All Manufacturers are designing surround sound "amplified"
DVD/VCD/CD players that require a high efficiency amplifier
-- Car audio will utilize class-d for specialized applications now
and will consider class-d for higher power head units
-- All digital for the future but cannot differentiate or justify now
- Japan
-- Sony's all digital input has forced the all digital solution
- Estimate 3 new customers pending
Slide 20
Audio Summary
. Microsemi was first to market (2 years ahead of competition)
- Case of waiting for market to catch up
. Ideal for efficiency critical applications
. AudioMAX power levels support major markets (10W to **50W)
. Simple approach offers the best performance/cost available
. Optimum cost solution for higher power requirements (power supply,
heatsink)
. Microsemi's "work with customer" approach and support
. Roadmap for *1W portable, higher power, and all digital