Date: 12th July 2011
Temperature-to-voltage converter with
built-in series resistance cancellation
Linear Technology Corporation has introduced its latest
LTC2997, a high accuracy temperature-to-voltage converter
with built-in series resistance cancellation for systems.
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 says Linear Technology.
Key features of LTC2997 as per Linear Technology includes:
Converts Remote or Internal Diode Temperature-to-Analog
Voltage
±1°C Remote Temperature Accuracy
±1.5°C Internal Temperature Accuracy
2.5V to 5.5V Supply Voltage
1.8V Reference Voltage Output
3.5ms VPTAT Update Time
4mV/°C Output Gain
170µA Quiescent Current
Operating temperature range: 0°C to 70°C, -40°C
to 85°C and -40°C to 125°C
Linear Technology explains The LTC2997's simplicity, accuracy
and micropower consumption caters to a wide variety of applications,
such as 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.
Availability: Now
Price: $1.45 each for 1K units.
Package: 6-pin, 2mm x 3mm DFN package
For more information visit www.linear.com
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