2009年12月16日星期三

xmedia - 400kHz Rise Time Accelerator Improves Heavily Loaded I2C/SMBus System Reliability

Rise Time Accelerator for I2C/SMBus SystemsStore this angel in big sizeMILPITAS, CA – January 31, 2008 – Linear Technology introduces the LTC4311 Rise Time Accelerator for heavily loaded I2C/SMBus systems operating at bus speeds of up to 400kHz. The LTC4311 offers improvements over absolute accelerator articles with its advanced accumulation voltage range, low ability abeyance mode, able pull-up current, bound bus hold-off threshold, voltage bigger ESD ruggedness and bargain amalgamation size. Systems area assorted accessories are affiliated to the aforementioned bus can display top bus capacitance able-bodied above the 400pF I2C specification. The capacitive loading causes apathetic acceleration times that can affect abstracts believability and behest the best applied acceleration of the bus. The LTC4311 alleviates these issues by application a additional pull-up accepted during the ascent bus transitions, while disabling the accepted sources during falling transitions and during argumentation lows and argumentation highs for bigger low accompaniment babble margins. The LTC4311 is ideal for carriageable applications, including cameras, anthology computers and full-featured corpuscle phones. The LTC4311 is able of operating from accumulation voltages as low as 1.6V and as top as 5.5V. It provides an ENABLE pin for a low accepted abeyance of beneath than 5uA, with no bus loading during abeyance or if powered down. The LTC4311 auto-detects the bus abandoned accompaniment and reduces accumulation accepted to alone 26uA in standby mode. For added reliability, the LTC4311 survives ±8kV Human Body Model ESD on its pins. Specified over the bartering and automated temperature ranges, the LTC4311 is offered in tiny 2mm x 2mm 6-pin DFN and SC70 packages.

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Summary of Features: LTC4311

•Improves I2C/SMBus Rise Time Transition
•Ensures Data Integrity with Multiple Devices on the I2C/SMBus
•Low Voltage Operation: 1.6V to 5.5V
•Improves Low State Noise Margin
•Up to 400KHz Operation
•Auto Detect Low Power Standby Mode
•Low (

John Hamburger, Director Marketing Communications
jhamburger@linear.com
Tel: 408-432-1900 ext 2419

Doug Dickinson, Media Relations Manager
ddickinson@linear.com
Tel: 408-432-1900 ext 2233

About Linear Technology
Linear Technology Corporation, a architect of top achievement beeline chip circuits, was founded in 1981, became a accessible aggregation in 1986 and abutting the S&P 500 basis of above accessible companies in 2000. Linear Technology articles cover top achievement amplifiers, comparators, voltage references, caked filters, beeline regulators, DC-DC converters, array chargers, abstracts converters, communications interface circuits, RF arresting conditioning circuits, uModule™ products, and abounding added analog functions. Applications for Linear Technology’s top achievement circuits cover telecommunications, cellular telephones, networking articles such as optical switches, anthology and desktop computers, computer peripherals, video/multimedia, automated instrumentation, aegis ecology devices, high-end chump articles such as agenda cameras and MP3 players, circuitous medical devices, automotive electronics, branch automation, action control, and aggressive and amplitude systems. For added information, appointment www.linear.com.

LT, LTC, LTM and are registered trademarks and uModule is a brand of Linear Technology Corp.

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