Datasheet Texas Instruments XTR108EA

XT R XTR108
108 SBOS187C – OCTOBER 2001 – REVISED JULY 2005 4-20mA, TWO-WIRE TRANSMITTER
“Smart” Programmable with Signal Conditioning
FEATURES DESCRIPTION в—Џ COMPLETE TRANSMITTER + RTD
LINEARIZATION
в—Џ TWO-WIRE, 4-20mA OUTPUT
в—Џ VOLTAGE OUTPUT (0.5V to 4.5V)
в—Џ ELIMINATES POTENTIOMETERS AND
TRIMMING
в—Џ DIGITALLY CALIBRATED
в—Џ 5V SUB-REGULATOR OUTPUT
в—Џ SERIAL SPIп›› BUS INTERFACE
● SSOP-24 PACKAGE 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 …