XTR106 4-20mA Current Transmitter with Bridge Excitation And Linearization | TI.com

XTR106
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
4-20mA Current Transmitter with Bridge Excitation And Linearization

 

Recommended alternative parts

  • XTR117  -  Does not include the 2.5V and 5V voltage references. 5V regulator instead of 5.1V.
  • XTR115  -  Does not include the 5V voltage reference. 5V regulator instead of 5.1V.
  • XTR116  -  4.096V voltage reference instead of 5V reference. Does not include 2.5V reference. 5V regulator instead of 5.1V.
  • XTR108  -  More programmable. Does not include voltage references. 2 matched 500uA current sources. 5V regulator instead of 5.1V.

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.

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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Parametrics

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Part number Order Vs (Min) (V) Vs (Max) (V) Offset voltage drift (+/-) (Max) (uV/degrees celsius) Offset voltage (+/-) (Max) (uV) Package Group Package size: mm2:W x L (PKG)
XTR106 Order now 7.5     36     1.5     25     PDIP | 14
SOIC | 14    
14PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 14)
14SOIC: 52 mm2: 6 x 8.65 (SOIC | 14)