MLX75605 How it works presentation old 629 DownloadLink 5404

Piet De Pauw
Chairman Melexis Opto Division
MOST All Members Meeting
Frankfurt
11 March 2008
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
Why Melexis in 150 Mbps MOST?
MLX75605 Fiber Optic Transceiver
Receiver
Transmitter
Package
Availability and Conclusions
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
Why Melexis in 150 Mbps MOST?
MLX75605 Fiber Optic Transceiver
Receiver
Transmitter
Package
Availability and Conclusions
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Automotive market is around 70% of
Melexis sales.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Fully ISO/TS 16949 Qualified
Melexis Automotive Network Transceivers
LIN
LIN transceivers
•
Single and multi channel
LIN System Basis Chips (SBC)
Transceiver + Voltage Regulator + …
Configurable LIN slaves
•
•
Switch modules and contact monitoring
Express down window lift, rear wiper control,
small pumps, …
ROM programmable LIN slaves
•
ASICs
Flash LIN slaves
•
•
•
•
•
•
Headlamp swiveling, HVAC flaps
Anti pinch window lift
Complete door modules
Electric parking brake
Seat positioning, seat heat/vent.
Seat belt retractor, …
LIN products developed in close collaboration with Vehicule
Manufacturers in Europe, US and Asia.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
•
Melexis Automotive Network Transceivers
GM LAN transceiver: TH8056
80% market share
Shipping 3Mio parts per month
Result from a long term relationship with GM
(*) GM LAN: GM specific Single Wire CAN standard
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Only device approved for GM LAN gen 2.x
next to Freescale
Optoelectronics
Optoelectronics sales
sales is
is around
around 30
30 Million
Million
EUR/year.
EUR/year.
Key-less Entry
Headlight Control
Optical Switch
MLX75303
Light-to-Frequency Converter
MLX75304
Anti-Glare Mirror
Light-to-Frequency Converter
MLX75304
Rain Sensor
ASIC
Linear Array
MLX90255
APPLICATION FUSION
Exterior view:
Night Vision
Adaptive Cruise Control
Lane Departure Warning
Traffic Sign Recognition
Interior view:
Driver Drowsiness
Smart Airbag Deployment
Sunload Sensor
ASIC
Camera MLX75307
Console Light Control
Display Brightness Control
Light-to-Voltage/Frequency Converter
MLX75304/305
Switch & Rotary Buttons
Steering Controls
Optical Switch
MLX75303
Steering Wheel Angle Sensing
Steering Wheel Torque Sensing
Linear Array MLX90255, ASIC
Optical Switch MLX75303
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Fuel
Composition
Analysis
Melexis Linear Array
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis
Melexis Automotive
Automotive Optoelectronic
Optoelectronic Products
Products Compatible
Compatible to
to SMD
SMD
solder
solder processes
processes and
and ambient
ambient temperatures
temperatures -40C
-40C to
to +125C
+125C
Melexis
Melexis Optoelectronic
Optoelectronic components
components for
for Steering
Steering Angle
Angle and
and Torque
Torque
Sensing
Sensing
Melexis LED Driver
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis Automotive LED Drivers
Why Melexis in 150 Mbps MOST?
MLX75605 Fiber Optic Transceiver
Receiver
Transmitter
Package
Availability and Conclusions
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
650 nm wavelength
150 Mbps speed
Compatible to 1 mm PMMA POF
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
150 Mbps Fiber Optic Transceiver
Connection to Pigtail
Pigtail connecting FOT and MOST connector
Fiber Optic Transceiver (FOT)
In 24 pin SOIC
Withstands leadfree SMD
solder processes
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
MOST 2+x (x= 0, 12, 20,…)
connector
Integrated ferrule clamp
to 1 mm PMMA POF
Features
3.3 V power supply
• LVDS inputs for transmitter
• LVDS output for receiver
Fully optical tested
Operating temperature range -40C to 95C
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Low EMI electrical connections:
Transmitter maximum Power: -1.5 dBm
Transmitter Minimum Power: - 6.5 dBm
Maximum Pigtail loss 1.5 dB: - 8 dBm
(SP2)
Budget for Link loss: 14 dB
(2x2.5 dB connector losses + 2x2 dB in line
connectors + 4.5 dB POF losses > 15m):
- 22 dBm (SP3)
Maximum Pigtail loss 1.5 dB: - 23.5 dBm
Minimal Receiver Sensitivity: - 23.5 dBm
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Optical Budget
over Full Temperature Range -40C to +95C
Why Melexis in 150 Mbps MOST?
MLX75605 Fiber Optic Transceiver
Receiver
Transmitter
Package
Availability and Conclusions
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mb/s Fiber Optic Receiver
MLX75603
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
150 Mbps Receiver MLX75603AA
Block Diagram
Integration of PD results in:
• High immunity to EMI
• Lower assembly costs
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Integrated PIN Photo Diode
Receiver IC Bandwidth
over supply voltage range
Minimum -3 dB
bandwidth needed for
application
MLX75603AA Analog path bandwidth at 95degC over supply range
-1.0 1
10
100
1000
Attenuation (dB)
-3.0
-5.0
3,0V
-7.0
3,3V
-9.0
3,6V
-11.0
-13.0
-15.0
-17.0
Frequency (kHz)
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
1.0
Receiver eye diagram performed
at -26dBm light power
Vdd=3.3V
-40 degC
with speed enhancement block
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
150 Mbps Receiver MLX75603AA
SP4 Eye Mask
Why Melexis in 150 Mbps MOST?
MLX75605 Fiber Optic Transceiver
Receiver
Transmitter
Package
Availability and Conculsions
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mb/s Fiber Optic Transmitter
Transmitter during Power ON
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mb/s Fiber Optic Transmitter
Light source Requirements
1. (RC)LED should be able to
couple at least 0.5mW in 1mm
PMMA POF.
2. Temperature dependence of
light emitted power
Lower than |-0.9| %/K
2
3. Fall/rise time should be as low
as possible but it is sufficient to
be close to spec requirements
i.e. tr and tf <4ns.
Using pre-emphasis the (RC)LED rise
and fall times can be reduced within
spec.
Popt, dBm
0
-2
-4
-6
-8
-10
-50
0
50
Temperature, °C
7.8mA
Conclusion: Only a small number
of (RC)LED types available on
the market today are useful.
100
16mA
25.7mA
150
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
4
(RC)LED Bandwidth Enhancement
• Rise time is determined by the
time needed to build-up a
minority carrier concentration
within the RCLED, corresponding
to the light level selected.
• Fall time is determined by the
minority carrier concentration
and the minority carrier lifetime
within the RCLED.
(RC)LED bandwidth is
boosted using pre-emphasis.
i.e. a current peak during
rising and falling edge.
(RC)LED drive current is
obtained by summing two
currents: a Modulation
current and a Pre-emphasis
current.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
(RC)LED characteristics:
150 Mbps Transmitter IC MLX75604AA
Block Diagram
min3dB
CONTROL
LVDS receiver
Buffer
INPUT+
Swing control
led driver
with swing
control and
common-mode
feedback
Vcm
Ibias
Imod
Commun.
circuit
Modulation current
generator
Peaking
circuit
Bias
current
generators
VCC
GND
Zapping
circuit
Settings
Bandgap current
generator
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
INPUT-
Optical Power over Temperature
MLX75605AA Optical power over temperature into 1mm PMMA SI POF
0
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
-1
-3
-4
-5
-6
-7
Trimmed optical power
Untrimmed optical power
-8
Temperature (degC)
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Optical power (dB)
-2
MLX75604 (RC)LED Driver Die Concept
Extended test modes
e.g. allowing direct
access to RCLED
terminals.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
On chip trimming
structures
Rise time: min 1.012ns
max: 1.369ns
MOST specification: 0.5UI=3.391ns/2=1.6955ns
in the worst case (48kHz frame speed)
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
MLX75604AA Transmitter IC
SP2 Overshoot Mask 150 Mbps MOST V0.9
Fall time: min 1.207ns
max: 1.635ns
MOST specification: 0.5UI=3.391ns/2=1.6955ns
in the worst case (48kHz frame speed)
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
MLX75604AA Transmitter IC
SP2 Undershoot Mask 150 Mbps MOST V0.9
Time base: 424ps/div
Transmitter eye diagram performed
At Vdd=3.3V
with MOST worst case pattern
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
MLX75604AA Transmitter IC
SP2 Eye Mask 150 Mbps MOST V0.9
Why Melexis in 150 Mbps MOST?
MLX75605 Fiber Optic Transceiver
Receiver
Transmitter
Package
Conculsion
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mb/s Fiber Optic Transceivers
Anchoring of Clamp
Lid
“Anchors” at SOIC bottom.
Clamp is anchored at SOIC
bottom for more
robustness when force is
applied on the fiber.
24 pin SOIC
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
“Mushrooms” on lid.
Clamp is anchored to lid.
Pick and Place
This allows the device to
be handled by the
vacuum pick-up head
of a standard pick &
place SMD machine.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Flat surface area on top
has a length larger
than 6 mm.
SMD Soldering Process
MLX75605 withstands lead free
SMD assembly processes
according IPC/JEDEC J-STD020
i.e. withstands 245 oC +0 oC/-5 oC
during at least 30 sec
In order to protect device during
soldering process, devices are
delivered with a kapton tape
on the top.
Kapton tape can be easily
removed before ferrule
insertion.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
MLX75605 withstands Moisture
Sensitivity Level #3.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Ferrule insertion into the FOT
Mistake-Proofing (Poka-Yoke)
Ferrule insertion into the FOT
Mistake-Proofing (Poka-Yoke)
Rx
Ferrule
Tx
Ferrule
Tx
Ferrule
Rx
Ferrule
Not
OK
OK
Rx
Tx
Rx
Tx
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Receiver and transmitter ferrules have two times a
different diameter so that the receiver ferrule cannot be
inserted in the Transmitter coupling hole, and the
transmitter ferrule cannot be inserted into the Receiver
coupling hole of the Fiber Optic Transceiver Package.
Why Melexis in 150 Mbps MOST?
MLX75605 Fiber Optic Transceiver
Receiver
Transmitter
Package
Availability and Conclusions
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Melexis 150 Mbps Fiber Optic
Transceivers for MOST
Availability (plan)
Prototypes compliant to 150 Mbps MOST Std rev 0.9: Mid 2008
Qualified product: end of 2008
PPAP: December 2009
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Production Samples: July 2009
Conclusions
150 Mbps MOST FOT is marketed as component
MLX75605
Samples compliant with 150 Mbps MOST V0.9
expected around mid 2008.
Receiver die (MLX75603) and Light Source Driver
die (MLX75604) are available separately.
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Development of Melexis 150 Mbps MOST Fiber
Optic Transceivers proceeds in line with the 150
Mbps MOST standard development.
Piet De Pauw, Chairman Opto Division,
[email protected]
Tel +32 57 226147, gsm +32 485 556208
Melexis Contact persons for support in
Japan:
David Poole, E-mail: [email protected],
+81 90 4226 9543
Yuji Ohkawa: E-mail: [email protected],
+81 90 1761 0501
© Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved
Thank You