april 26, 2017 fd-soi & finfet and gate or
TRANSCRIPT
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FD-SOI & finFET: And gate? Or gate?How decision maker and influencer views changed since 2016
g dan hutcheson
This report has been reproduced for the 2018 SOI Silicon Valley Symposium
It is approved for public release with attribution to VLSIresearch.
April 26, 2017
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Goal: get a balanced view from the industry
• So I talked to a wide
range:
– finFET bigots
– SOI bigots
– And multiple shades in-
between
• There were far fewer
bigots
– The industry is less
divided
– It’s no longer an OR?
• It’s an AND?
April 2018
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Who I talked to:
• 24 people interviewed, representing
– 51% of IC Market
– 59% of IP Market
• Almost half were interviewed in 2016
• The majority were decision makers
– The rest had either strong internal or
industry-wide influence
• All were well versed in SOI and its
various flavors
• Across a wide swath of product
categories
April 2018
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A lot has changed since 2016
• The industry has torn down
the barriers to FD-SOI seen
in 2016
– “Situation has changed a lot.
The questions of roadmap
and adoption have gone.”
– “There is enough IP to
satisfy application needs“
• The or-gate question is gone
• The market now sees FD &
fins as complementary
technologies
April 2018
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The finFET 14nm branch point is gone
• Fins are no longer seen as
expensive
– Wafer costs have come way
down as capital depreciated
• A few say, “It’s over, Fins won”
– Most see fins and FD as
complementary technologies
• It’s no longer a question of one
OR the other
• It’s a question of one AND the
other
– What’s for dinner tonight?
• French or Italian
April 2018
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Fins & FD are complementary…Choice is not a scale issue
April 2018
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Choosing between FD & fins is …
• Like choosing what’s for
dinner tonight:
– French or Italian?
• Everybody likes Italian
• French is for special
occasions
• Fins are used in the
highest volumes
– For Performance,
Integration, & Density
• FD is better for complex
high-mix SoCs
April 2018
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If FD is “the French Technology”Then think of fins as Italian … i.e. more ubiquitous
• Customer views have
matured
– They see both as useful
depending on the application
• Fins for high perf, density, &
volume
• FD for high-mix SoC
– Analog + Digital + RF
• RF is the new mixed signal
• FD is seen as uniquely
positioned for 5G/mm wave
– Fin parasitics are the
decisive factor
April 2018
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FD-SOI’s advantages
• FD-SOI’s advantages in
RF has tipped the scales
in its favor
– Especially for mm wave
• With 5G seen as the
target
• Power is the other
advantage
– But be wary of
overselling Body Biasing
• The negative perception
history of complexity
April 2018
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Transistor Reasons to Design with FD-SOI
• They clearly see the
differentiable advantages
of the FD-SOI transistor
versus the FinFET
April 2018
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Business Reasons to Design with FD-SOI
• They also see significant
business model
advantages in FD-SOI
• Lower design cost
– Faster time-to-market
• Lower manufacturing
cost has become
important
– Indicating a lowering of
the negative risk wall-of-
worry
April 2018
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finFET’s advantages
• High-Integration
• High-Performance
• High-Density
• Can get cost and feature
advantages from Nodal
scaling
• Ecosystem has no peers
April 2018
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Target Markets for FD-SOI
April 2018
• FD is seen by many as the
“IoT Technology”
– It has clear advantages for
many other markets
– But…
• IoT lacks market definition
• IoT’s more of an app spec
– High-Mix: A/D/RF SOC
– Low power
– High Thermal Range
– Thermally sensitive apps
• Image Sensor Processors
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Target Markets for FD-SOI:
Comments that color their views
April 2018
• FD has a huge advantage for IoT
• FD for markets that benefit from clever power with
on/off mission profiles
• For hi-mix analog/digital chips
– There is enough IP to satisfy application needs
• Markets where product life is short
• Better for customers with low budgets
• You can’t do on-chip 5G with finFETs
– The parasitics are too high
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Expected Volume Ramp Timing
• FD-SOI equivalent nodes
run ~2 years behind
finFET
• Lesson Learned:
– FD levers fin learning to
achieve lower cost,
faster time-to-market
– FD only has to learn
what’shievable with fins
– C
2016 2017 2018 2019 2020 2021 2022
FinFET22/16 to
1410 7 5
FD-SOI 28 22* 12 7
April 2018
what’s relevant for it to get advantages unachievable with fins
Choice is highly dependent on how a product’s lineage overlays onto the node
lineage, cost, and feature offerings available from both FinFET and FD-SOI
— Resulting in a highly fragmented market with a complex decision matrix
for product design teams
*an 18 is also expected to be available a later date
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Top reasons to run down a FD-SOI roadmap
• They see GF’s roadmap
as bringing the benefits
of nodal scaling
– Certainty of future
• The comment:
“It’s the same as all FD-
SOI, but better”
… Was paraphrased
by many
April 2018
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Where do we go from here?
• Continue building the ecosystem
• More independent IP
• Full flow design tools, etc.
• Easy for the average designer
• Drive the volume
• Broaden the audience
• Expose the complementarity
• Disclose more success stories
April 2018
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Questions?
... and backup slides
April 2018
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