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* IOD-enabled ICs can significantly extend battery life of power-hungry
portable devices such as laptops, smartphones, PDAs, digital cameras and MP3

* Adiabatic Logic's patented technique reduces power consumption of digital
computer chips by recycling energy during inter chip communication; save a
watt, save a dollar

* IOD uses the speed of submicron CMOS to actively mimic the voltage-current
drive characteristics of a classic output driver with a source terminator

* IOD also reduces component count and bill of material (BOM) cost and can
improve performance of sub systems

CAMBRIDGE, England, May 12, 2003 - Adiabatic Logic Limited, a
Cambridge-based company focused on creating and licensing intellectual
property (IP) in the low power technology arena, has developed an
Intelligent Output Driver (IOD), which it claims can deliver up to 75% power
savings in chip I/O for portable devices such as laptops, smartphones,
handheld computers, digital cameras and MP3 players.

The patented technology, a complex piece of intellectual property (IP),
focuses on recycling the power used during on-board communication between
digital computer chips or integrated circuits (ICs). Results from SPICE
(simulation programme with IC emphasis) and a discrete circuit demonstrator
confirm typical power saving of between 50 to 75% compared to the fCV² power
usage of a conventional output driver.

"Whilst shrinking transistor sizes have made the silicon core of today's
digital chips vastly more energy efficient, the same cannot be said of the
I/O pin drivers which are burning progressively more energy," said Geoff
Harvey, Adiabatic Logic's chief technology officer. "Our solution addresses
this imbalance head-on by making the complete I/O cycle a nearly loss-less
or adiabatic process."

The Intelligent Output Driver (IOD) uses the speed of submicron CMOS
(complementary metal oxide semiconductor) to actively mimic the
voltage-current drive characteristics of a classic driver with a source (or
series) terminator resistor. It does this in such a way that the bulk of the
current is delivered to the load capacitance non-resistively from a
reservoir capacitance maintained at a mid rail voltage, assisted by the
inherent inductance of the load. The on-chip reservoir capacitance delivers
charge on rising edges and recovers charge on falling edges thereby
recycling energy, which is conventionally wasted.

"We believe that this is a significant breakthrough that will be a major
benefit to chip and system developers focused on reducing power consumption
because if you are saving watts then you are also saving dollars," added
Geoff Harvey. "Our technology is backward compatible with existing IC
designs and foundries and therefore can be incorporated relatively quickly
into new products - and it will continue to provide added value as the
industry moves towards system-on-chip (SoC) solutions."

Adiabatic Logic's IOD solution offers a multitude of other benefits to IC
and system developers. It reduces the overall component count and bill of
material (BOM) cost by minimising battery size, cutting DC-DC
converter/thermal management costs and eliminating the requirement for
terminating resistors. Sub system performance is also significantly
improved, while lower MOSFET 'hot electron' stress and EMC emissions are

"We expect smartphone and handheld device developers, OEMs and ODMs to be
particularly interested in the benefits of our technology as consumers want
more multimedia features, such as colour screens, digital cameras and MMS,
as well as longer battery life," said Simon Payne, Adiabatic Logic's chief
executive officer.

"It is our belief that IOD-enabled devices represent the future and anyone
who wants to ensure they remain at the cutting-edge of technology will need
to enhance their products by integrating the significant improvements that
IOD provides. Devices not employing the benefits of IOD will become
redundant, as faster, more power efficient IOD-enabled devices take their

Adiabatic Logic's licensable IP is available from the second quarter of 2003.

Commenting on Adiabatic Logic's IP, Professor Steve Furber FRS, FREng.,
co-inventor of the ARM processor and now head of computer science at
Manchester University, England, said: "IOD is the most elegant solution for
significantly reducing the power cost of I/O drivers that I have seen. It
has the potential to reduce the power budget of digital ICs dramatically,
enabling high-end processors and memories to deliver higher performance
without exceeding power limits as well as enhancing the battery life of
multi-chip mobile systems. In my view there is almost no digital IC that
would not benefit from using this technology."

About Adiabatic Logic Limited (

Founded in 2002, Adiabatic Logic Limited, a wholly owned subsidiary of
OptionExist (, was set up to exploit a portfolio of
secured patents in the low power technology arena. Adiabatic Logic has a
patented technique with the potential to significantly reduce the power
consumption of digital computer chips, such as those found in today's laptop
computers, personal digital assistants (PDAs) and mobile phones.

The design team's focus is on creating and applying intellectual property
(IP) to exploit the concept of 'loss-less' processes. An adiabatic process
is one in which no heat is gained or lost. It is a concept normally
associated with the behaviour of gases but can be applied in other physical
domains, such as electronics. The company is based at Dry Drayton, on the
outskirts of Cambridge, England.

Media contacts (to arrange interviews or for additional material, white
paper and photography):

Martin Brooke
Martin Brooke Associates
Tel: +44 (0) 1223 264050

Simon Payne
OptionExist / Adiabatic Logic
The Irwin Centre
Scotland Road, Dry Drayton
Cambridge CB3 8AR
Tel: +44 (0) 1954 211244

This press release was distributed by ResponseSource Press Release Wire on behalf of Martin Brooke Associates in the following categories: Consumer Technology, Personal Finance, Business & Finance, Computing & Telecoms, for more information visit