Overview
The XTR106UA is a monolithic 4mA to 20mA, two-wire current transmitter designed by Texas Instruments for cost-optimized bridge sensor applications. This device integrates complete bridge excitation (2.5V or 5V reference), an instrumentation amplifier, sensor linearization, and current output circuitry. It is particularly suited for field transmitter and sensor applications, offering high accuracy and stability over a wide range of operating conditions.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package | SOIC (D), 14 pins | |
| Operating Temperature Range | -40°C to 85°C | °C |
| Output Current Range | 4mA to 20mA | mA |
| Supply Voltage Range | 7.5V to 36V | V |
| Bridge Excitation References | 2.5V, 5V | V |
| Regulator Output | 5.1V | V |
| Span Drift | ±25ppm/°C maximum | ppm/°C |
| Offset Drift | 0.25µV/°C | µV/°C |
| Power Supply Rejection Ratio (PSR) | 110dB minimum | dB |
| Common Mode Rejection Ratio (CMR) | 86dB minimum | dB |
Key Features
- Low total unadjusted error
- 2.5V and 5V bridge excitation references
- 5.1V regulator output
- Low span drift: ±25ppm/°C maximum
- Low offset drift: 0.25µV/°C
- High PSR: 110dB minimum and high CMR: 86dB minimum
- Wide supply range: 7.5V to 36V
- 14-pin DIP and SOIC package options
- Linearization circuitry providing up to a 20:1 improvement in nonlinearity
Applications
- Field transmitter and sensor applications
- Factory automation
- Compatible with HART modem
- Pressure and temperature bridge transmitters
- Industrial process control
- SCADA remote data acquisition
- Weighing systems
- Strain gauge transmitters
- Accelerometers
Q & A
- What is the XTR106UA used for? The XTR106UA is used as a 4mA to 20mA current transmitter for bridge sensor applications.
- What are the available package options for the XTR106UA? The XTR106UA is available in 14-pin SOIC and 14-pin DIP packages.
- What is the operating temperature range of the XTR106UA? The operating temperature range is -40°C to 85°C.
- What are the bridge excitation references provided by the XTR106UA? The device provides 2.5V and 5V bridge excitation references.
- What is the regulator output voltage of the XTR106UA? The regulator output voltage is 5.1V.
- How does the linearization circuitry improve the performance of the XTR106UA? The linearization circuitry provides up to a 20:1 improvement in nonlinearity, even with cost-optimized transducers.
- What is the typical application of the XTR106UA in industrial settings? It is commonly used in field transmitter and sensor applications, industrial process control, and SCADA remote data acquisition.
- What are the key features that contribute to the accuracy of the XTR106UA? Key features include low total unadjusted error, low span and offset drift, and high PSR and CMR.
- How does the XTR106UA handle radio frequency interference? The device is susceptible to RF interference, which can be mitigated by proper wiring and shielding.
- What is the supply voltage range for the XTR106UA? The supply voltage range is from 7.5V to 36V.
