Overview
The XTR115U/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 XTR115U/2K5 is optimized for accurate current scaling and output current limit functions, making it a fundamental building block for smart sensors and various industrial applications. It operates over an extended industrial temperature range of –40°C to +85°C and features a low quiescent current, a 5-V regulator for external circuits, and a precision on-chip voltage reference (VREF) of 2.5 V for sensor excitation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage | 7.5 to 36 | V |
| Operating Temperature | –40 to +85 | °C |
| Storage Temperature | –55 to +125 | °C |
| Quiescent Current | 200 | µA |
| VREF for Sensor Excitation | 2.5 | V |
| Output Current Range | 4 to 20 | mA |
| Span Error | ±0.05% | |
| Nonlinearity Error | ±0.003% | |
| Package Type | SO-8 (SOIC) |
Key Features
- Low quiescent current: 200 µA
- 5-V regulator for external circuits
- Precision on-chip VREF (2.5 V for XTR115 and 4.096 V for XTR116) for sensor excitation
- 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 amplifier
- Voltage-to-current amplifier
Q & A
- What is the primary function of the XTR115U/2K5? The primary function is to transmit analog 4-mA-to-20-mA signals over an industry standard current loop.
- What is the operating temperature range of the XTR115U/2K5? The operating temperature range is –40°C to +85°C.
- What is the quiescent current of the XTR115U/2K5? The quiescent current is 200 µA.
- What is the VREF value for the XTR115U/2K5? The VREF value is 2.5 V.
- What are the key error specifications of the XTR115U/2K5? The span error is ±0.05% and the nonlinearity error is ±0.003%.
- What package type is the XTR115U/2K5 available in? The XTR115U/2K5 is available in an SO-8 (SOIC) package.
- What are some common applications of the XTR115U/2K5? Common applications include 2-wire current loop transmitters, smart transmitters, industrial process control, test systems, and voltage-to-current amplifiers.
- Is the XTR115U/2K5 compatible with HART modems? Yes, it is compatible with HART modems.
- What is the power supply voltage range for the XTR115U/2K5? The power supply voltage range is 7.5 V to 36 V.
- Can the XTR115U/2K5 be used to power external circuitry? Yes, it has a 5-V regulator that can be used to power external circuitry.
