Overview
The XTR117AIDGKRG4, 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 a fundamental building block of smart sensors and is specified for operation over the extended industrial temperature range of –40°C to +125°C. It features an on-chip 5-V voltage regulator that can power external circuitry and includes a current return pin (IRET) to ensure accurate control of the output current. The XTR117 is widely used in applications requiring precise current scaling and output current limit functions.
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% | |
| Package Types | VSON-8, VSSOP-8 | |
| Output Current Limit | Continuous | |
| Junction Temperature | 165 | °C |
Key Features
- Low quiescent current: 130 µA
- 5-V regulator for external circuits
- Low span error: 0.05%
- Low nonlinearity error: 0.003%
- Wide-loop supply range: 7.5 V to 36 V
- Temperature range: –40°C to +125°C
- Packages: VSON-8 and VSSOP-8
- Current return pin (IRET) for accurate control of output current
- Reverse-voltage protection capabilities
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 XTR117?
The XTR117 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 XTR117?
The operating temperature range is –40°C to +125°C.
- What is the quiescent current of the XTR117?
The quiescent current is 130 µA.
- Does the XTR117 have an on-chip voltage regulator?
Yes, it has a 5-V regulator for external circuits.
- What are the typical applications of the XTR117?
Typical applications include two-wire current-loop transmitters, smart transmitters, industrial process control, test systems, current amplifiers, and voltage-to-current amplifiers.
- What are the package types available for the XTR117?
The XTR117 is available in VSON-8 and VSSOP-8 packages.
- How does the XTR117 handle reverse-voltage protection?
The XTR117 can be protected against reverse voltage using a diode bridge circuit or by inserting a diode in series with the loop supply voltage.
- What is the span error of the XTR117?
The span error is 0.05%.
- What is the nonlinearity error of the XTR117?
The nonlinearity error is 0.003%.
- What is the junction temperature limit of the XTR117?
The junction temperature limit is 165°C.
