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Temperature-to-voltage converter measures remote diodes with 1 °C accuracy
July 12, 2011 // Paul Buckley
Linear Technology Corporation has introduced a high accuracy temperature-to-voltage converter with built-in series resistance cancellation for 2.5 V to 5.5 V systems. Many low voltage systems today rely on temperature to assess overall system health and reliability. Traditional implementations require a series of filters, a precise reference and a current source, resulting in a complex conversion scheme prone to inaccuracies if not carefully designed. The LTC2997 is a simple temperature monitoring solution that measures a remote diode's temperature with ±1°C accuracy or local temperature with ±1.5°C accuracy, and outputs a voltage proportional to absolute temperature. The LTC2997 provides a precise, space-saving, micropower temperature monitoring solution.
The LTC2997's simplicity, accuracy and micropower consumption caters to a wide variety of applications, including system thermal control, energy harvesting, desktop and notebook computers, network servers and environmental monitoring. Two current sense inputs can be configured to measure either local or remote temperature. A built-in algorithm cancels the errors due to sensor series resistance when measuring a diode or transistor voltages. A 1.8 V voltage reference output is also available to share with an external ADC or for generating temperature threshold voltages to compare against the V PTAT output.
The LTC2997 is offered in commercial, industrial and automotive versions, supporting operating temperature ranges from 0 to 70 °C, -40 to 85 °C and -40 to 125 °C, respectively. The LTC2997 is available today in a small RoHS compliant, 6-pin, 2 mm x 3 mm DFN package. Pricing starts at $1.45 each in 1,000 piece quantities.
More information about the LTC2997 temperature-to-voltage converter at
www.linear.com/product/LTC2997.
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Technology News
Automotive MCU benchmark takes energy efficiency into account
May 21, 2013
Today, cars are crammed with microprocessors, and many of them are not completely switched off when the driver parks and ...
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Business News
EnSilica partners Cross Border Technologies to boost sales growth in key European markets
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Technology News
Industry's first ultra-wideband Doherty amplifiers support broadband operation
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Technology News
Graphics chip recognizes nearby pedestrians and bicycles
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Market News
EMS boom for medical industry says analyst
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Business News
Gemalto teams with Encore Networks for mission critical M2M communications as US shifts to wireless
May 21, 2013
European smartcard specialist Gemalto has teamed up with US machine-to-machine (M2M) router supplier Encore Networks to provide ...
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Market News
Solar industry capital spending hits seven-year low in 2013 but upturn is on the cards
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Market News
Apple's overseas tax evasion stirs debate over US tax code
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Market News
Could Intel enable USD200 Ultrabook?
Technical papers
Filter Wizard
Check out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
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The development platform for i.MX 6Quad from element14 (built to the Freescale SABRE Lite design) is an evaluation platform featuring the powerful i.MX 6Q, a multimedia application processor with Quad ARM Cortex-A9 cores at 1.2 GHz from Freescale Semiconductor.
This month, Freescale and element14 are giving away five such platforms, worth £128.06 each, for EETimes Europe's readers to win. The platform helps evaluate the rich set of peripherals and includes a 10/100/Gb Ethernet port, SATA-II, HDMI v1.4, LVDS, parallel RGB interface, touch screen interface, analog headphone/microphone, micro TF and SD card interface, USB, serial port, JTAG, camera interface, and input keys for Android.
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In our previous reader offer, Pico Technology was giving away one of its recently launched PicoScope 3207B, a 2-channel USB 3.0 oscilloscope worth 1451 Euros. Lucky winner Mr L. Sanchez-Gonzalez from Spain should be receiving his PicoScope 3207B soon. Let's wish them some interesting findings with his projects.
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Automotive
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.
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