Overview
The XTR117AIDRBR is a precision current output converter designed by Texas Instruments to transmit analog 4-mA-to-20-mA signals over an industry-standard current loop. This device is a fundamental building block of smart sensors and is particularly useful in applications requiring accurate current scaling and output current limit functions. The XTR117 operates over an extended industrial temperature range of –40°C to +125°C, making it suitable for a wide range of industrial and process control environments. It features an on-chip 5-V voltage regulator that can power external circuitry, and a current return pin (IRET) to ensure accurate control of the output current.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | –40 to 125 | °C |
| Loop Supply Range | 7.5 to 36 | V |
| Quiescent Current | 130 | µA |
| Span Error | 0.05% | |
| Nonlinearity Error | 0.003% | |
| Current Gain | 100 | |
| Output Current Range | 4 mA to 20 mA | |
| Package Types | VSON-8, VSSOP-8 | |
| Package Size (VSON) | 3 mm × 3 mm | |
| Package Size (VSSOP) | 3 mm × 4.9 mm |
Key Features
- Low quiescent current: 130 µA
- On-chip 5-V regulator for powering external circuits
- Low span error: 0.05% and low nonlinearity error: 0.003%
- Wide-loop supply range: 7.5 V to 36 V
- Temperature range: –40°C to +125°C
- Current return pin (IRET) for accurate control of output current
- Available in VSON-8 and VSSOP-8 packages
Applications
- Two-wire, 4-20mA current-loop transmitter
- Smart transmitter
- Industrial process control
- Test systems
- Current amplifier
- Voltage-to-current amplifier
Q & A
- What is the primary function of the XTR117AIDRBR?
The XTR117AIDRBR is designed to transmit analog 4-mA-to-20-mA signals over an industry-standard current loop.
- What is the operating temperature range of the XTR117AIDRBR?
The device operates over a temperature range of –40°C to +125°C.
- What types of packages are available for the XTR117AIDRBR?
The device is available in VSON-8 and VSSOP-8 packages.
- What is the quiescent current of the XTR117AIDRBR?
The quiescent current is typically 130 µA.
- What is the purpose of the on-chip 5-V regulator?
The on-chip 5-V regulator can be used to power external circuitry.
- What is the span error and nonlinearity error of the XTR117AIDRBR?
The span error is 0.05%, and the nonlinearity error is 0.003%.
- What is the loop supply range for the XTR117AIDRBR?
The loop supply range is from 7.5 V to 36 V.
- How does the current return pin (IRET) function?
The IRET pin senses any current used in external circuitry to provide accurate control of the output current.
- What are some common applications of the XTR117AIDRBR?
Common applications include two-wire current-loop transmitters, smart transmitters, industrial process control, test systems, current amplifiers, and voltage-to-current amplifiers.
- How does the XTR117AIDRBR protect against overvoltage surges?
The device can be protected using Zener diodes or surge clamping diodes to limit the maximum surge voltage applied to the XTR117.
