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Limiter offers customers a monolithic, all-in-one solution for high reliability
applications
 Rancho Cordova, CA - December 5, 2019 –
Teledyne e2v HiRel today announced the
availability of a new RF power limiter, the 2.5 GHz, 100 W
TDLM025100. The limiter is a monolithic
integrated circuit based on a Silicon-on-Insulator (SOI) technology that is ideal
for use in high reliability aerospace and defense applications.
Features
- Monolithic drop-in solution with no external bias components
- Adjustable low power limiting threshold from+7 dBm to +13 dBm
- High maximum power handling of 50 dBm,100 W pulsed
- Positive threshold control from +0 V to +0.3 V
- Fast response time of less than 1 ns
- Packaging – 24-pad 4 × 4 × 0.85v mm CLGA
- Qualified for use in harsh environments
Applications
- Satellite transceivers and antennas
- Sensitive orbital T/R Modules
This new integrated device provides customers with a more reliable and robust
power protection solution compared to the traditional industry alternative, discrete
GaAs PIN diode circuits with multiple external components. The power limiter delivers
low insertion loss and high linearity under non-limiting power levels and extremely
fast response time in a limiting event, ensuring protection of sensitive circuitry.
 Manufactured on the UltraCMOS® process, an advanced form of SOI technology, the
TDLM025100 is available in a leadless, ultra-small 4x4 mm hermetic QFN package.
Fully screened for space applications, it provides reliable protection for sensitive
transceivers, with a response time of <1 ns. Evaluation kits, EM units, and flight
units are in stock and available for customers.
“This new product further builds on our strong heritage developing many types
of semiconductors qualified to meet a wide range of ruggedized environmental requirements,”
said Mont Taylor, VP Business Development at Teledyne e2v HiRel. “We're now pleased
to be incorporating SOI technology into our product offerings while continually
growing our portfolio of standard RF building blocks such as amplifiers, LNAs, PAs,
DVGAs, DSAs, Limiters, Mixers, Prescalers, PLLs, Switches, and more. We continue
to be committed to customers designing RF signal chains that meet the high-reliability
challenges of defense and space applications.”
Traditionally, with a PIN diode, the input signal is shunted to ground. PIN diodes
are known for their high maximum power handling and low insertion loss. However,
they also feature slow response and recovery time, poor linearity, low ESD ratings,
and require dc blocking capacitors. Additionally, PIN diodes take a significant
amount of time to design and validate and cannot be easily integrated into a system.
In contrast to PIN diodes, the TDLM025100 power limiter provides a 10–100x improvement
in response and recovery time, delivers a greater than 10–30 dB linearity (IIP3)
improvement and offers a 20x improvement in ESD protection. Finally, the limiting
threshold can be adjusted through a high impedance voltage control pin (VCTRL),
eliminating the need for external components such as dc blocking capacitors, RF
choke inductors and bias resistors.
About Teledyne Defense Electronics
Serving Defense, Space and Commercial sectors worldwide, Teledyne Defense Electronics
offers a comprehensive portfolio of highly engineered solutions that meet your most
demanding requirements in the harshest environments. Manufacturing both custom and
off-the-shelf product offerings, our diverse product lines meet emerging needs for
key applications for avionics, energetics, electronic warfare, missiles, radar,
satcom, space, and test and measurement. TDE is a business unit of Teledyne Technologies,
Inc., a leading provider of sophisticated instrumentation, digital imaging products
and software, aerospace and defense electronics, and engineered systems.
Contact Info:
Darrek Porter Director of Marketing Teledyne Microwave Solutions Office:
(404)-368-9714 Mobile: (404)-394-1347 Web:
www.teledyne.com
E-mail:
darrek.porter@teledyne.com
Posted December 9, 2019
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