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Voltage monitor offers versatility, precision

Posted: 25 Jul 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Linear? LTC2914? voltage monitor?

Linear Technology Corp. has introduced the LTC2914, a precision quad input voltage monitor with four separate undervoltage (UV) and overvoltage (OV) inputs, designed for systems with multiple supplies.

The IC promises a versatile and precise solution for voltage monitoring by giving the user the flexibility to configure specific UV and OV trip thresholds, while also guaranteeing 1.5 percent threshold accuracy of the monitored voltages over temperature. A buffered reference output and a three-state input polarity-select pin allow for monitoring of up to two separate negative voltages without the need of any external components, Linear said, greatly simplifying both design and layout. All monitors share common UV and OV open-drain outputs that can be wired-OR'd together to indicate a single fault. The LTC2914-1 has latching capabilities for the overvoltage output, and the LTC2914-2 has an output disable feature to facilitate margining.

The LTC2914 features input glitch filters that promise to eliminate the noise on the monitored voltages and ensures reliable operation without false triggering. With an unlimited choice of threshold selection, simple configuration and low quiescent current of 70A, the company said the new device is suitable for systems such as telecom/network equipment, storage servers, desktop and notebook computers that have various voltage levels and require reliable and accurate voltage monitoring.

The LTC2914 is offered in 16-pin SSOP and 16-pin 5-by-3mm DFN packages and is specified over the commercial and industrial temperature ranges. The LTC2913 is offered in 10-pin MSOP and 3-by-3mm 10-pin DFN packages. Pricing for the LTC2914 is $3.75 each and for the LTC2913 begins at $2.30 each in 1,000-piece quantities.

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Related Datasheets
Part Number Description Category
? LTC2914 Quad UV/OV Positive/Negative Voltage Monitor ICs, Interface



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