The XTR115 and XTR116 (XTR11x) are precision current output converters designed to transmit analog 4-mA-to-20-mA signals over an industry standard current loop. These devices provide accurate current scaling and output current limit functions.
The on-chip voltage regulator (5 V) can be used to power external circuitry. A precision on-chip V REF (2.5 V for the XTR115 and 4.096 V for the XTR116) can be used for offsetting or to excite transducers. A current return pin (I RET) senses any current used in external circuitry to provide an accurate control of the output current.
The XTR11x are a fundamental building block of smart sensors using 4-mA-to-20-mA current transmission.
The XTR11x are specified for operation over the extended industrial temperature range, –40°C to +85°C.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | XTR11x 4-20 mA Current-Loop Transmitters datasheet (Rev. B) | PDF | HTML | 27 Jun 2023 |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 30 Apr 2024 | |
| Application note | High Accuracy Wheatstone Bridge Amplifier Circuit to 4-20-mA Current Loop Transm | PDF | HTML | 28 Sep 2023 | |
| Application brief | How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) | PDF | HTML | 14 Feb 2023 | |
| Analog Design Journal | How to Design an Inexpensive HART Transmitter (Rev. A) | 18 May 2015 | ||
| Analog Design Journal | 4Q 2012 Issue Analog Applications Journal | 25 Sep 2012 | ||
| Application note | Using the XTR115 with the PGA309 to Generate 4mA to 20mA Output (Rev. B) | 20 Apr 2006 |
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