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Quad 12-Bit/10-Bit/8-Bit Rail-to-Rail I2C DACs with Internal Reference Include Reset to High Impedance Outputs for Power Supply Margining

MILPITAS, CA – December 9, 2009 – Linear Technology Corporation introduces the LTC2635 quad 12-bit, 10-bit and 8-bit rail-to-rail digital-to-analog converters (DACs), which integrate a precision 10ppm/ºC reference in tiny 3mm x 3mm QFN and MSOP packages. Ordering options include 2.5V (LTC2635-L) and 4.096V (LTC2635-H) DAC full-scale outputs. In addition to offering power-on reset to zero and mid-scale options, the LTC2635-L also includes ordering options for high impedance outputs at power-on reset and during shutdown. This allows the DAC to be used in applications such as power supply margining where the DAC outputs must be electrically isolated from the power supply at power-on, before being called to action to adjust supply voltages up and down.

The LTC2635’s small size and internal reference are important for a variety of industrial, automotive and ATE applications. The LTC2635 offers 12-bit performance of ±2.5LSB (max) INL error and 3nV•s crosstalk, ensuring that a voltage change on one DAC has minimal effect on the other DACs. Operating from a single 2.7V to 5.5V supply, supply current is a low 125µA per DAC.

In addition to selecting one of three resolution options, designers can also choose between a 2.5V or 4.096V full-scale range, as well as power-up options for zero-scale, mid-scale or Hi-Z. The 16-pin 3mm x 3mm QFN package includes a hardware load-DAC (LDAC) pin, three address pins for selecting 27 unique I2C addresses, and a REFLO pin. The 10-pin MSOP package has just one address pin for selection of up to 3 unique addresses on the I2C bus. All LTC2635 options are guaranteed over the automotive (-40ºC to +125ºC) and commercial (0ºC to +70ºC) temperature ranges. Pricing begins at $2.03 each in 1,000-piece quantities. For more information, visit www.linear.com.

Summary of Features: LTC2635

  • Integrated Precision Reference:
    • 2.5V Full Scale 10ppm/ºC (LTC2635-L)
    • 4.096V Full Scale 10ppm/ºC (LTC2635-H)
  • Maximum 12-Bit INL Error: ±2.5LSB
  • Pin- & Software-Compatible I2C DACs
  • Guaranteed Monotonic Over -40ºC to +125ºC Temperature Range
  • Ultralow Crosstalk Between DACs (3nV•s)
  • Low Noise (0.75mVP-P, 0.1Hz to 200kHz)
  • Selectable Internal or External Reference
  • 2.7V to 5.5V Supply Range (LTC2635-L)
  • Low Power Operation: 125µA per DAC
  • Power-On Reset to Zero-Scale, Mid-Scale or
  • Hi-Z Options
  • Tiny 3mm x 3mm QFN-16 & MSOP-10 Packages

About Linear Technology

Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, µModule® products, and many other analog functions. Applications for Linear Technology’s high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.

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New I/O Server is the Only Compact, Industrial PC with Truly Integrated I/O for Monitoring and Control

WIXOM, Mich., Dec. 8 /PRNewswire/ — Acromag introduced the I/O Server Industrial PC featuring an internal carrier card to interface a wide selection of related plug-in I/O modules. Designed specifically to work together, this combination of a rugged,fanless box computer and conduction-cooled I/O modules provides a truly integrated system for high-performance measurement and control projects. The first release in the I/O Server line, the Model IOS-7400, is equipped with an Intel® Atom™ CPU and a whole host of interface connections for peripherals and network devices. Users can insert up to four mezzanine IOS modules, in any mix, onto the slide-out carrier card to perform A/D, D/A, discrete monitoring/control, counter/timer, serial communication, and FPGA computing functions. The interface for up to 192 channels of field I/O is handled through four high-density connectors on the front panel for clean, easy cable access. Advanced thermal technology removes heat without open vents or fans for dependable operation from -30 to 75 degrees C. Pricing for the I/O Server PC starts at $2195 while the twenty-plus IOS modules begin at $325 each.

Many industries can benefit from the I/O Server’s tightly integrated approach to embedded computers and I/O signal processing. Manufacturers will find the I/O Server package well-suited to machine control and factory automation applications. Military and homeland security system developers will appreciate the unit’s integrity and high performance. The compact, rugged design will work well as a mobile server and in transportation projects such as rail or trucking. Wide operating temperature capabilities also make the I/O Server a preferred solution for outdoor signage and display systems.  Additionally, the flexible I/O configurations with easily interchangeable I/O modules should appeal to scientists and technicians working on continually evolving research, simulation, data acquisition, and test & measurement projects.

The IOS-7400 PC unit features an embedded 1.6GHz CPU, 1GB DDR2 RAM, and runs on Windows® Embedded Standard or Linux®. Standard interfaces include VGA, Ethernet, serial, USB, CompactFlash®, and audio input/output.

More than 20 IOS modules are available to provide a wide variety of analog, digital, and serial I/O processing capabilities. A re-configurable FPGA module allows users to execute custom logic routines and algorithms on TTL, differential or LVDS I/O signals. Up to four IOS modules can be combined in any mix on the carrier card for flexible, high-density I/O to meet custom requirements.

About Acromag

Acromag has designed and manufactured measurement and control products for more than 50 years. They are an international corporation with a world headquarters near Detroit, Michigan and a global network of sales representatives and distributors. Acromag offers a complete line of embedded I/O products for military, aerospace, manufacturing, transportation, utilities, and scientific research applications. www.acromag.com

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Ubicom Expands Long-Term Relationship With Denali by Adopting Its Predictable Protocol Verification Solution

SUNNYVALE, Calif., Dec. 8 /PRNewswire/ — Denali Software, Inc., a world-leading provider of electronic design automation (EDA) software and intellectual property (IP), today announced that Ubicom, a leading provider of networking and multimedia processor solutions, has extended its relationship with Denali, taking full advantage of its advanced protocol verification technology and services. Ubicom has selected Denali’s MMAV(TM) and PureSpec(TM) verification IP (VIP), which support high-speed communications and peripheral protocols, to aid in the design and verification of their media and network processors. Denali’s MMAV and PureSpec fortifies Ubicom’s designers with a predictable protocol verification IP solution to meet their design requirements and lower integration risk, ensuring interoperability with new products.

“Our hardware and software innovations enable multimedia and networking products that ensure a high-quality user experience and unprecedented ease of use,” states Jon Gibbons, vice president of VLSI Engineering at Ubicom. “Denali has consistently provided robust, high-quality verification IP solutions and reaffirmed their superb industry reputation for protocol expertise. We are confident that their solutions will continue to enable our designers to take advantage of the latest protocol features and quickly create innovative products with less risk and improved time-to market.”

As a leading provider of networking and multimedia processor solutions, Ubicom delivers communications and media processor and software platforms that address the unique demands of real-time interactive applications and multimedia content delivery in the digital home. Ubicom will utilize Denali’s PureSpec and MMAV products in their in their next generation of multimedia and network processors.

“SoC design and verification teams look to Denali to provide the industry’s best-in-class verification solutions to accelerate the pre-silicon design and verification of protocol applications,” states Sanjiv Kumar, director, Verification Products at Denali Software. “We value Ubicom’s trust in Denali and are confident that our predictable protocol verification IP will minimize risks and increase design productivity.”

About Denali’s Verification IP Portfolio

Denali’s best-in-class, standards-based verification IP (VIP) solutions provides more than 500 companies worldwide the latest technology to design and verify complex chip interfaces for communication, consumer, and computing products. Denali’s MMAV and PureSpec products are part of a comprehensive VIP portfolio for predictable compliance of memories and protocol interfaces. Denali’s VIP seamlessly integrates into various testbenches, languages, simulators, and is compliant with popular advanced verification methodologies (e.g., OVM, VMM, eRM, etc.). For more details, visit: www.denali.com/purespec and www.denali.com/mmav.

About Denali Software

Denali Software, Inc. is a world-leading provider of electronic design automation (EDA) software and intellectual property (IP) for system-on-chip (SoC) design and verification. Denali delivers the industry’s most trusted solutions for deploying USB, PCI Express, NAND Flash and DDR DRAM subsystems. Developers use Denali’s EDA, IP and services to reduce risk and speed time-to-market for electronic system and chip design. Denali is headquartered in Sunnyvale, California and has offices around the world to serve the global electronics industry. More information about Denali, its products and services is available at www.denali.com.

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