XTR108 4-20mA, Two-Wire Transmitter 'Smart' Programmable with Signal Conditioning | TI.com

XTR108 (ACTIVE)

4-20mA, Two-Wire Transmitter 'Smart' Programmable with Signal Conditioning

 

Recommended alternative parts

  • XTR105  -  Non-programmable. Does not include 5V regulator. 2 matched 800uA current sources instead of 500uA sources.
  • XTR112  -  Non-programmable. Does not include 5V regulator. 2 matched 250uA current sources instead of 500uA sources.
  • XTR106  -  Non-programmable. 5.1V regulator instead of 5V. Includes 2.5V and 5V voltage references. Does not include matched current sources.

Description

The XTR108 is a "smart", programmable, 4-20mA, two-wire transmitter designed for temperature and bridge sensors. Zero, span, and linearization errors in the analog signal path can be calibrated via a standard digital serial interface, eliminating manual trimming. Non-volatile ex-ternal EEPROM stores calibration settings.

The all-analog signal path contains an input multiplexer, autozeroed programmable-gain instrumentation amplifier, dual programmable current sources, linearization circuit, voltage reference, sub-regulator, internal oscillator, control logic, and an output current amplifier. Programmable level shifting compensates for sensor DC offsets. Selectable up- and down-scale output indicates out-of-range and burn-out per NAMUR NE43. Automatic reset is initiated when supply is lost.

Features

  • COMPLETE TRANSMITTER +RTD LINEARIZATION
  • TWO-WIRE, 4-20mA OUTPUT
  • VOLTAGE OUTPUT (0.5V to 4.5V)
  • ELIMINATES POTENTIOMETERS AND TRIMMING
  • DIGITALLY CALIBRATED
  • 5V SUB-REGULATOR OUTPUT
  • SERIAL SPI™ BUS INTERFACE
  • SSOP-24 PACKAGE
  • APPLICATIONS
    • REMOTE RTD TRANSMITTERS
    • PRESSURE BRIDGE TRANSMITTERS
    • STRAIN GAGE TRANSMITTERS
    • SCADA REMOTE DATA ACQUISITION
    • WEIGHING SYSTEMS
    • INDUSTRIAL PROCESS CONTROL

SPI is a trademark of Motorola, Inc. All other trademarks are the property of their respective owners.

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Parametrics Compare all products in 4-20mA signal conditioners

 
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)
XTR108
4.5    
5.5    
0.1    
50    
SSOP | 24    
24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24)