ALD
REVOLUTIONIZES ANALOG DESIGN WITH ZERO THRESHOLD MOSFETS
Breakthrough
in design supports ultra-low voltage operation and enables new level
of precision in circuit design
SUNNYVALE,
Calif. June 13, 2005 - Advanced Linear Devices Inc (ALD), a design innovation
leader in analog semiconductors, today announces an industry breakthrough
zero threshold MOSFET device introducing a new level of precision in
analog design that makes 0.1-Volt circuits possible for the first time.
The Quad/Dual
N-Channel Matched Pair Zero Threshold MOSFETs are matched at the factory
using ALD's exclusive EPADŽ CMOS technology to achieve the industry's
lowest threshold voltage of 0.0V with an exceptional range of variation
from 0.01V to -0.01V and an offset voltage of just 2 mV. These MOSFETS
advance the state-of-the-art in small signal transistors with a level
of precision that opens the door to micropower technology never before
achievable. Basic amplifier applications, for example, operating at
supply voltages of only 0.20V and power dissipation of less than 1 microwatt
are where zero threshold MOSFETs will revolutionize current day analog
circuit design.
With this
new analog component, the shackle of "threshold turn-on voltage" placed
on the circuit design engineer has just been broken. The operating voltage
of a circuit will no -more- longer be limited by the gate threshold
voltage or the bipolar turn-on voltage. Now a simple circuit using this
new device can be constructed to operate on as little as a 20 mV supply.
On more complicated circuits, consisting of many stages stacked on top
of each other, a system operating voltage of just 0.2V to 0.45V becomes
a reality.
Providing
zero threshold MOSFETs for the first time will support the design of
analog circuits that operate on less than one microwatt, giving designers
the flexibility to extend the maximum signal range of low voltage systems.
Such versatility supports the operation of countless applications from
ultra-sensitive, remote sensor arrays to implantable medical devices.
This new device can be classified as both an enhancement mode device
when operated above the threshold voltage and a depletion mode MOSFET
device when operated at or below threshold voltage.
Ultra-Low
Power Zero Threshold MOSFETS with EPAD technology, also serve as an
excellent replacement for normally closed relay applications since they
are always in the "on" state without power. For amplifier and sensor
circuits, they enable long-term power conservation. This offers the
industry the ability to design circuits with operating power up to 100
times lower than competitive MOSFETs. In terms of matched threshold
voltages, ALD EPAD MOSFETs are vastly more accurate than currently available
devices. In addition, a zero threshold MOSFET greatly expands useful
operating signal range, enabling rail-to-rail circuit operation for
very low voltage analog circuits.
"In designing
the Zero Threshold MOSFET, ALD wanted to eliminate some of the design
limitations that analog circuit designers deal with every day," said
Robert Chao, President and CEO of ALD. "ALD is now offering that possibility
with Zero Threshold EPAD MOSFETs devices which enable the operation
of delicate sensors from extremely remote locations for sensitive and
critical security applications. Even implantable medical devices that
must perform in-situ for many years can now be developed to promote
longer operational life to avoid invasive surgery for the replacement
of these devices. The world is demanding lower voltage operation from
a variety of electronic devices and these highly -more- precise MOSFET
devices will close the gap towards achieving this goal."
Analog
circuit engineers who design with standard and small signal discrete
analog components will find these EPAD MOSFETs useful when developing
circuits for a wide range of applications, from computers and peripherals
to industrial controls, handheld instrumentation, security and alarm
systems and sensor and detection systems. EPAD zero threshold MOSFETs
will be useful in the design of specific analog circuits such as current
mirrors, discrete differential amplifiers, discrete analog multiplexers,
buffers, level translators and fail safe circuits, among many others.
Technical
Specifications
The New
Device is titled "Quad/Dual N-Channel Zero Threshold EPAD Matched Pair
MOSFET ARRAY" and the designated part numbers are ALD110800/ALD110900.
They are available as quad and dual devices in PDIP and SOIC packages
in four different models and they feature, as the most salient specification,
Gate Threshold Voltage of 0.0 V +/- 0.01V @ 1 uA. Pricing starts at
$0.91 in quantities of 1000 pieces.
About
EPAD Technology
The EPAD
Ultra-Low Power and Zero Threshold MOSFET devices were developed using
ALD's patented EPAD CMOS technology. EPAD is an acronym for Electrically
Programmable Analog Device - a patented and trademarked technology developed
by ALD to precisely trim a variety of CMOS analog integrated circuit
elements at the die or packaged level. EPAD is a proven design and manufacturing
technology, conceived by ALD and steadily improved upon with proven
results. Once trimmed, the device voltage and current characteristics
are stored indefinitely in the chip even when the power to the chip
is removed. Programming or trimming is achieved through a series of
software controlled voltage bursts to a floating gate structure.
About
Advanced Linear Devices Inc. Advanced Linear Devices, Inc. (ALD) is
a design innovation leader in analog -more- semiconductors specializing
in the development and manufacture of precision CMOS linear integrated
circuits, including analog switches, A/D converters and chipsets, voltage
comparators, operational amplifiers, analog timers, and conventional
and EPAD MOSFET transistors. Most standard functions are also available
as ASIC cells for the development of customized integrated circuits.
ALD was founded in 1985 with a commitment to bridge technology gaps
by providing analog semiconductor solutions to the challenges facing
OEM design engineers in the industrial controls, military, automotive,
security, and medical instrumentation markets. ALD is headquartered
in Sunnyvale, Calif., with distributors throughout the U.S. and Europe.
Company
Contact John P. Skurla, Director of Marketing & Sales, Advanced Linear
Devices, Inc., 415 Tasman Drive, Sunnyvale, CA 94089 USA. Telephone:
408-747-1155; Fax: 408-747-1286; E-mail: jpskurla@aldinc.com
Media
Contact: Tom
Murphy, E&E Public Relations, 831-459-9431, tomm@e-epr.com
Download Data Sheet ALD110800
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Copyright Advanced Linear Devices, Inc. All Rights Reserved.
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