Overview
The XTR110KP, produced by Texas Instruments, is a precision voltage-to-current converter designed for analog signal transmission. It is particularly useful in applications requiring high accuracy and noise immunity in current-mode signal transmission. The device accepts input voltages of 0 to 5V or 0 to 10V and can be configured for various output current ranges, including 4mA to 20mA, 0mA to 20mA, and 5mA to 25mA. It features a precision on-chip metal film resistor network for input scaling and current offsetting, along with an internal 10V voltage reference that can drive external circuitry.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Input Voltage Range (VIN1, VIN2) | 0 | - | 10 (VIN1), 5 (VIN2) | V |
| Output Current Range | 4 | - | 20 | mA |
| Nonlinearity (16mA/20mA Span) | 0.01 | 0.025 | 0.005 | % of Span |
| Offset Current (IOS) at IO = 4mA | 0.2 | 0.4 | 0.1 | % of Span |
| Power Supply Voltage (VCC) | 13.5 | - | 40 | V |
| Quiescent Current (excluding IO) | 3 | - | 4.5 | mA |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Selectable input/output ranges: 0V to +5V, 0V to +10V inputs; 4mA to 20mA, 0mA to 20mA, 5mA to 25mA outputs.
- Precision on-chip metal film resistor network for input scaling and current offsetting.
- Internal 10V voltage reference with a current drive capability of 10mA.
- Single-supply operation with a wide supply range of 13.5V to 40V.
- Low nonlinearity of 0.005% max.
- Adjustable offset and span using external potentiometers.
- Available in 16-pin plastic DIP, ceramic DIP, and SOL-16 surface-mount packages.
Applications
- Industrial process control.
- Pressure/temperature transmitters.
- Current-mode bridge excitation.
- Grounded transducer circuits.
- Current source reference for data acquisition.
- Programmable current source for test equipment.
- Power plant/energy system monitoring.
Q & A
- What are the input voltage ranges for the XTR110KP? The XTR110KP accepts input voltages of 0 to 5V or 0 to 10V.
- What are the typical output current ranges for the XTR110KP? The device can be configured for output current ranges such as 4mA to 20mA, 0mA to 20mA, and 5mA to 25mA.
- What is the nonlinearity of the XTR110KP? The nonlinearity is 0.005% max for the 16mA/20mA span.
- How is the offset current adjusted in the XTR110KP? The offset current can be adjusted using a potentiometer, typically R1, by setting the input voltage to zero and adjusting R1 to give the desired output current.
- What is the purpose of the internal 10V voltage reference in the XTR110KP? The internal 10V voltage reference can be used to drive external circuitry and is accurately regulated at pin 12 (VREF SENSE).
- What are the typical applications of the XTR110KP? The device is used in industrial process control, pressure/temperature transmitters, current-mode bridge excitation, grounded transducer circuits, and more.
- What is the operating temperature range of the XTR110KP? The operating temperature range is -40°C to +85°C.
- How is the span adjusted in the XTR110KP? The span is adjusted at the full-scale output current using a potentiometer, typically R2, by setting the input voltage to the full-scale value and adjusting R2 to give the desired full-scale output current.
- Can the XTR110KP be used in high-temperature environments? Yes, the device can operate in a wide temperature range, but for low temperature coefficient operation, specific resistors may need to be substituted.
- What are the package options for the XTR110KP? The device is available in 16-pin plastic DIP, ceramic DIP, and SOL-16 surface-mount packages.
