Product Summary

The XTR108EA is a smart, programmable, 4-20mA, twowire 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. Current sources, steered through the multiplexer, can be used to directly excite RTD temperature sensors, pressure bridges, or other transducers. An uncommitted op amp can be used to convert current into a voltage. The XTR108EA is specified for –40℃ to +85℃.

Parametrics

XTR108EA absolute maximum ratings: (1)Loop Supply Voltage, VPS: Dependent on External FET; (2)XTR Supply Voltage, External VS (Referenced to IRET Pin): +5.5V; (3)Input Voltage to Multiplexer (Referenced to IRET Pin): 0V to VS; (4)Output Current Limit: Continuous; (5)Storage Temperature Range: –55℃ to +125℃; (6)Junction Temperature: +165℃; (7)Lead Temperature (soldering, 10s): +300℃.

Features

XTR108EA features: (1)Complete transmitter + RTD linearization; (2)Two-wire, 4-20mA output; (3)Voltage output (0.5V to 4.5V); (4)Eliminates potentiometers and trimming; (5)Digitally calibrated; (6)5V sub-regulator output; (7)Serial spi bus interface; (8)SSOP-24 package.

Diagrams

XTR108EA block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
XTR108EA
XTR108EA

Texas Instruments

Special Purpose Amplifiers 4-20mA 2Wire Trsmtr 'Smart' Prog

Data Sheet

0-1: $5.47
1-10: $4.91
10-25: $4.37
25-50: $4.12
XTR108EA/2K5
XTR108EA/2K5

Texas Instruments

Special Purpose Amplifiers 4-20mA 2Wire Trsmtr 'Smart' Prog

Data Sheet

0-2005: $2.26
2005-2500: $2.26
XTR108EAG4
XTR108EAG4

Texas Instruments

Special Purpose Amplifiers 4-20mA 2Wire Trsmtr 'Smart' Prog

Data Sheet

0-1: $5.47
1-10: $4.91
10-25: $4.37
25-50: $4.12
XTR108EA/2K5G4
XTR108EA/2K5G4

Texas Instruments

Special Purpose Amplifiers 4-20mA 2Wire Trsmtr 'Smart' Prog

Data Sheet

0-2005: $2.26
2005-2500: $2.26