XTR108EA-2K5 BURR-BROWN [Burr-Brown Corporation], XTR108EA-2K5 Datasheet

XTR108EA-2K5

Manufacturer Part Number

XTR108EA-2K5

Description

Manufacturer

BURR-BROWN [Burr-Brown Corporation]

Datasheet

1.XTR108EA-2K5.pdf (32 pages)

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FEATURES

APPLICATIONS

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

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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

REMOTE RTD TRANSMITTERS

PRESSURE BRIDGE TRANSMITTERS

STRAIN GAGE TRANSMITTERS

SCADA REMOTE DATA ACQUISITION

WEIGHING SYSTEMS

INDUSTRIAL PROCESS CONTROL

“Smart” Programmable with Signal Conditioning

RTD

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

4-20mA, TWO-WIRE TRANSMITTER

V/I-0

V/I-1

V/I-2

V/I-3

V/I-4

V/I-5

Linearization

Excitation

www.ti.com

XTR108

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 external 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.

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 XTR108 is

specified for –40 C to +85 C.

PGA

EEPROM

Control Circuits

SPI and

Ret

V/I

SBOS187C – OCTOBER 2001 – REVISED JULY 2005

4-20mA

XTR108

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