Texas Instruments REF Series Current & Power Monitors & Regulators are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for . The REF combines three circuit building-blocks on a single monolithic chip— two µA current sources and a current mirror. The sections are dielectrically. REF FEATURES. q COMPLETELY FLOATING: No Power Supply or Ground Connections q HIGH ACCURACY: ±% q LOW TEMPERATURE.
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REF200: One REF200 device to power up two resistive sensors with 100uA
Roll your own should be cheaper than TI and as good or better, but more work. The subset of useful knowledge that is desired seems “a bit of a shame”. Do you have another question? This is to read an RTD so the current must be low to prevent self-heating but accurate enough to calculate 0.
Go to Support forums. Menu Search through millions of questions and answers User. Temperature change of 1K is about 0.
Alternative to REF Current Source – Electrical Engineering Stack Exchange
An OPA dual op amp along with a REF current source, makes an excellent bridge measurement system which features low power single-supply 5V operation a Doc. Mentions Tags Eef200 Cancel. TI is a global semiconductor design and manufacturing company. I learned a lot from the short time spent looking at that requirement. Hi Nurseda Baskent, I see no issue with this application.
Details, datasheet, quote on part number: To make a temperature measurement system with a Doc. All content and materials on this site are provided “as is”. They are ideally optimized for personal computer and CRT power supplies although they can be used in any number of off-line applications where energy efficiency is critical. We are glad that we were able to resolve this ref2200, and will now proceed to close this thread. We have no details for what variation from spec are acceptable, we could write a new question for every single part in existence and write another set for every single situation rer200 layouts, and then we could ask again in 6 months when prices change.
An internal high-side driver.
No license, either express or implied, by estoppel or otherwise, is granted by TI. This is similar to the Datasheet section 8. For help making this question more broadly applicable, visit the help center. The performance of each section is individually measured and laser-trimmed to achieve high accuracy at low cost.
REF datasheet I tried searching Digikey for “current source” and ordering results by price. These and many other circuit techniques are shown in the Applications section of this Data Sheet. Many thanks in advance!
REF datasheet –
The PSIxxx has a far worse temperature spec 0. Coupled with the fact. I’m using this in conjunction with an INA Inst. External circuitry can be used to obtain virtually any current. ESD damage can range from subtle performance degradation to complete device failure.
An overcurrent circuit breaker senses the voltage across the drain and source terminals of an external N-channel Reef200 with no need for a sense resistor. Love this forum and hope Re2f00 can contribute my own 2 cents. Quite what the problem is in ‘cluttering up the site’ with specialistish answers if they are well tagged and indexed I know not, but it’s increasingly obvious that I march to the beat of a different drum than is largely heard here: Jul 13, 3: Unlike typical boost circuits, the MAX output is completely disconnected from the input in shutdown.
Dramatic performance improvements can be achieved by operating the input amp Doc. Independent 5V and 3. Use of the information on this site may require a license from a third party, or a license from TI.
Ask a related question What is a related question? Current sourcesCurrent sinksFloating current sourcesVoltage-to-current converters transconductance amplifiers Current-to-current converters current mirrors Current-to-v Doc. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. If this question can be reworded to fit the rules in the help centerplease edit the question. I’m sorry my question did not fit the forum’s rules. Russell McMahon k 9 Computers Printers Communication systems and cellular phones Video equipment This device is particularly adpated to the protection of symmetrical signals.
A link to a data sheet and some idea of your key target parameters is always useful when asking questions such as this. The newly created question will be automatically linked to this question.