Overview
The XTR106PA, manufactured by Texas Instruments, is a low-cost, monolithic 4-20mA two-wire current transmitter specifically designed for bridge sensors. It integrates complete bridge excitation, an instrumentation amplifier, sensor linearization, and current output circuitry. This component is ideal for applications requiring precise and stable current transmission in industrial and process control environments.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Output Current Range | 4 | - | 20 | mA |
| Over-Scale Limit | 24 | 28 | 30 | mA |
| Under-Scale Limit | 1 | 1.6 | 2.2 | mA |
| Supply Voltage Range | 7.5 | - | 36 | V |
| Bridge Excitation Voltage | 2.5 | - | 5 | V |
| Regulator Output Voltage | 5.1 | - | - | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Types | 14-pin DIP, SO-14 | - | - | - |
Key Features
- Complete bridge excitation (2.5V or 5V reference)
- Instrumentation amplifier with wide gain range
- Sensor linearization with second-order correction
- Low total unadjusted error and low drift
- High power supply rejection ratio (PSR) and common-mode rejection ratio (CMR)
- Wide supply voltage range (7.5V to 36V)
- Regulator output voltage of 5.1V
- Low span and offset drift
Applications
- Pressure bridge transmitters
- Strain gage transmitters
- Temperature bridge transmitters
- Industrial process control
- SCADA remote data acquisition
- Remote transducers
- Weighing systems
- Accelerometers
Q & A
- What is the primary function of the XTR106PA?
The XTR106PA is a 4-20mA two-wire current transmitter designed for bridge sensors, providing bridge excitation, instrumentation amplification, and sensor linearization. - What are the available bridge excitation voltages for the XTR106PA?
The XTR106PA offers bridge excitation voltages of 2.5V or 5V. - What is the operating temperature range of the XTR106PA?
The operating temperature range is from -40°C to +85°C. - What are the package types available for the XTR106PA?
The XTR106PA is available in 14-pin DIP and SO-14 surface-mount packages. - What is the supply voltage range for the XTR106PA?
The supply voltage range is from 7.5V to 36V. - What is the regulator output voltage of the XTR106PA?
The regulator output voltage is 5.1V. - What are some common applications of the XTR106PA?
Common applications include pressure bridge transmitters, strain gage transmitters, temperature bridge transmitters, industrial process control, SCADA remote data acquisition, remote transducers, weighing systems, and accelerometers. - How does the XTR106PA handle sensor nonlinearity?
The XTR106PA includes linearization circuitry that provides second-order correction to the transfer function, improving nonlinearity by up to 20:1. - What are the key specifications for output current?
The output current range is 4-20mA, with an over-scale limit of 24-30mA and an under-scale limit of 1-2.2mA. - What is the significance of the high PSR and CMR in the XTR106PA?
The high power supply rejection ratio (PSR) and common-mode rejection ratio (CMR) ensure that the device is highly immune to noise and common-mode voltages, providing stable and accurate output.
