Nationl Semiconductor Lm3911n / Lm3911 Semiconductor Temperature Controller

US $11.50

Tacoma, Washington, United States
Jan 29th

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These are new and still in the bulk pack from the factory. The number you wish to buy will be taken out of that pack and re-packaged for shipping. Thanks for looking. I have 150 available. The LM3911 is a highly accurate temperature measurement and/or control system for use over a 25C to 85C temperature range. Fabricated on a single monolithic chip, it includes a temperature sensor, a stable voltage reference and an operational amplifier. The output voltage of the LM3911 is directly proportional to temperature in degrees Kelvin at 10 mV/§K. Using the internal op amp with external resistors any temperature scale factor is easily obtained. By connecting the op amp as a comparator, the output will switch as the temperature transverses the set-point making the device useful as an on-off temperature controller. An active shunt regulator is connected across the power leads of the LM3911 to provide a stable 6.8V voltage reference for the sensing system. This allows the use of any power supply voltage with suitable external resistors. The input bias current is low and relatively constant with temperature, ensuring high accuracy when high source impedance is used. Further, the output collector can be returned to a voltage higher than 6.8V allowing the LM3911 to drive lamps and relays up to a 35V supply. The LM3911 uses the difference in emitter-base voltage of transistors operating at different current densities as the basic temperature sensitive element. Since this output depends only on transistor matching the same reliability and stability as present op amps can be expected. The LM3911 is available in two package styles, a metal can TO-46 and an 8-lead epoxy mini-DIP. In the epoxy package all electrical connections are made on one side of the device allowing the other 4 leads to be used for attaching the LM3911 to the temperature souce. The LM3911 is rated for operation over a 25C to 85C temperature range.

Condition:	New other (see details): A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with defects. See the seller’s listing for full details and description of any imperfections. ...	Brand	National SemiConductor
MPN	LM3911
Model	LM3911