4-20mA Current Transmitter with Bridge Excitation (2.5-V or 5-V reference) And Linearization
Product details
Parameters
Package | Pins | Size
Features
- LOW TOTAL UNADJUSTED ERROR
- 2.5V, 5V BRIDGE EXCITATION REFERENCE
- 5.1V REGULATOR OUTPUT
- LOW SPAN DRIFT: ±25ppm/°C max
- LOW OFFSET DRIFT: 0.25µV/°C
- HIGH PSR: 110dB min
- HIGH CMR: 86dB min
- WIDE SUPPLY RANGE: 7.5V to 36V
- 14-PIN DIP AND SO-14 SURFACE-MOUNT
- APPLICATIONS
- PRESSURE BRIDGE TRANSMITTERS
- STRAIN GAGE TRANSMITTERS
- TEMPERATURE BRIDGE TRANSMITTERS
- INDUSTRIAL PROCESS CONTROL
- SCADA REMOTE DATA ACQUISITION
- REMOTE TRANSDUCERS
- WEIGHING SYSTEMS
- ACCELEROMETERS
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Description
The XTR106 is a low cost, monolithic 4-20mA, two-wire current transmitter designed for bridge sensors. It provides complete bridge excitation (2.5V or 5V reference), instrumentation amplifier, sensor linearization, and current output circuitry. Current for powering additional external input circuitry is available from the VREG pin.
The instrumentation amplifier can be used over a wide range of gain, accommodating a variety of input signal types and sensors. Total unadjusted error of the complete current transmitter, including the linearized bridge, is low enough to permit use without adjustment in many applications. The XTR106 operates on loop power supply voltages down to 7.5V.
Linearization circuitry provides second-order correction to the transfer function by controlling bridge excitation voltage. It provides up to a 20:1 improvement in nonlinearity, even with low cost transducers.
&The XTR106 is available in 14-pin plastic DIP and SO-14 surface-mount packages and is specified for the –40°C to +85°C temperature range. Operation is from –55°C to +125°C.
Similar but not functionally equivalent to the compared device:
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | XTR106: 4-20mA Current Transmitter with Bridge Excitation And Linearization datasheet (Rev. A) | Jul. 21, 2003 |
| Application note | 4Q 2011 Issue Analog Applications Journal | Nov. 09, 2011 | |
| Application note | Analog linearization of resistance temperature detectors | Nov. 09, 2011 | |
| Application note | 20mA to 0-20mA Converter & Current Summing Current-to-Current Converters | Oct. 02, 2000 |
Design & development
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Features
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Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
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CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| PDIP (N) | 14 | View options |
| SOIC (D) | 14 | View options |
Ordering & quality
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