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Temperature sensors up reliability of DD3 modules

Posted: 28 Jan 2010 ?? ?Print Version ?Bookmark and Share

Keywords:temperature sensor? DDR3? memory module?

Integrated Device Technology Inc. (IDT) rolls precision temperature sensors targeted at DDR2 and DDR3 memory modules, solid-state drives (SSDs) and computing motherboards. These devices allow enterprise, mobile and embedded computing systems to run at peak efficiency, saving overall power and enhancing reliability and performance by monitoring the temperature of the various subsystems.

The new IDT temperature sensors measure the local temperature of a computing subsystem and, if the temperature rises above pre-determined levels, enable system controllers to respond by throttling system bandwidth, adjusting memory refresh rates or varying fan speeds. In addition, the temperature sensors can trigger shutdown of a subsystem if the temperature reaches a critical point, enhancing reliability. The IDT offering includes a stand-alone temperature sensor (TS3000B3), as well as one with an integrated 256byte EEPROM array (TSE2002B3) on a single, monolithic die for non-volatile storage of user information, such as system configuration in a Serial Presence Detect for memory modules.

The new IDT temperature sensor family is the first to exceed the requirements set forth by JEDEC's JC42.4 specification for Grade B temperature sensors, providing 1C temperature sensing accuracy over the entire temperature range of -20C to +125C, providing greater system accuracy. The devices also incorporate an innovative ADC that delivers programmable resolution up to 12bits (0.0625C) with industry-leading conversion time, dramatically improving the overall precision of thermal control loops across temperature.

"IDT is well known for working with our customers to integrate embedded temperature sensors in our advanced memory buffers and PCIe switches. This allows us to provide customers with unparalleled power savings and adheres to our PowerSmart initiative," said Mario Montana, VP and general manager of the enterprise computing division at IDT. "These new devices further leverage that expertise culminating in stand-alone temperature sensors with precision that exceeds industry standards."

Also, the SMBus and I?C programming interfaces are fully supported, including SMBus timeout and I?C fast mode, input glitch filtering and power-up voltage hysteresis, all designed to enhance fault tolerance. This combination of performance and features makes the IDT devices suitable for robust computing systems with improved performance per watt.

The IDT temperature sensor devices are currently sampling to qualified customers. They are available in 8-pin DFN and TDFN packages that are RoHS-compliant. The TSE2002B3 is priced at $0.85 for 10,000-unit quantities and the TS3000B3 is priced at $0.75 for 10,000-unit quantities.

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