Overview
The XTR116U/2K5, produced by Texas Instruments, is a precision current output converter designed to transmit analog 4-mA to 20-mA signals over an industry standard current loop. This device is part of the XTR11x series, which includes the XTR115 and XTR116 models. The XTR116 is specifically tailored for applications requiring high accuracy and reliability in industrial process control and smart sensor systems. It features an on-chip 5-V regulator for powering external circuitry and a precision voltage reference (VREF) of 4.096 V for sensor excitation or offsetting. The device operates over an extended industrial temperature range of –40°C to +85°C and is packaged in an SO-8 package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | –40 to 85 | °C |
| Power Supply Voltage Range | 7.5 to 36 | V |
| Quiescent Current | 200 µA | - |
| VREF | 4.096 V | - |
| Span Error | 0.05% | - |
| Nonlinearity Error | 0.003% | - |
| Output Current Range | 4 mA to 20 mA | - |
| Short-Circuit Current | 16 mA | - |
| Small Signal Bandwidth | 380 kHz | - |
| Slew Rate | 3.2 mA/µs | - |
Key Features
- Low quiescent current: 200 µA
- 5-V regulator for external circuits
- Precision on-chip VREF of 4.096 V for sensor excitation or offsetting
- Low span error: 0.05%
- Low nonlinearity error: 0.003%
- Wide loop supply range: 7.5 V to 36 V
- SO-8 package
- Current return pin (IRET) for accurate control of output current
Applications
- 2-wire, 4-20 mA current loop transmitters
- Smart transmitters
- Industrial process control
- Test systems
- Compatible with HART modem
- Current amplifiers
- Voltage-to-current amplifiers
Q & A
- What is the primary function of the XTR116U/2K5?
The XTR116U/2K5 is a precision current output converter designed to transmit analog 4-mA to 20-mA signals over an industry standard current loop.
- What is the operating temperature range of the XTR116U/2K5?
The device operates over an extended industrial temperature range of –40°C to +85°C.
- What is the voltage reference (VREF) value for the XTR116U/2K5?
The VREF for the XTR116U/2K5 is 4.096 V.
- What is the quiescent current of the XTR116U/2K5?
The quiescent current is 200 µA.
- What is the power supply voltage range for the XTR116U/2K5?
The power supply voltage range is 7.5 V to 36 V.
- What are the typical applications of the XTR116U/2K5?
Typical applications include 2-wire, 4-20 mA current loop transmitters, smart transmitters, industrial process control, test systems, and voltage-to-current amplifiers.
- What is the package type of the XTR116U/2K5?
The device is packaged in an SO-8 package.
- Does the XTR116U/2K5 have a built-in voltage regulator?
Yes, it has a 5-V regulator for powering external circuitry.
- What is the span error of the XTR116U/2K5?
The span error is 0.05%.
- What is the nonlinearity error of the XTR116U/2K5?
The nonlinearity error is 0.003%.
- Is the XTR116U/2K5 compatible with HART modems?
Yes, it is compatible with HART modems.
