XTR101

XTR101 SBOS146A − OCTOBER 1986 − REVISED AUGUST 2004 Precision, Low Drift 4-20mA TWO-WIRE TRANSMITTER FEATURES D INSTRUMENTATION AMPLIFIER INPUT: − Low Offset Voltage, 30µV max − Low Voltage Drift, 0.75µV/°C max − Low Nonlinearity, 0.01% max D TRUE TWO-WIRE OPERATION: − Power and Signal on One Wire Pair − Current Mode Signal Transmission − High Noise Immunity D DUAL MATCHED CURRENT SOURCES D WIDE SUPPLY RANGE: 11.6V to 40V D SPECIFICATION RANGE: −40°C to +85°C D SMALL DIP-14 PACKAGE, CERAMIC AND PLASTIC APPLICATIONS D INDUSTRIAL PROCESS CONTROL: − Pressure Transmitters − Temperature Transmitters − Millivolt Transmitters D RESISTANCE BRIDGE INPUTS D THERMOCOUPLE INPUTS D RTD INPUTS D CURRENT SHUNT (mV) INPUTS D PRECISION DUAL CURRENT SOURCES D AUTOMATED MANUFACTURING D POWER/PLANT ENERGY SYSTEM MONITORING DESCRIPTION The XTR101 is a microcircuit, 4-20mA, two-wire transmitter containing a high accuracy instrumentation amplifier (IA), a voltage-controlled output current source, and dual-matched precision current reference. This combination is ideally suited for remote signal conditioning of a wide variety of transducers such as thermocouples, RTDs, thermistors, and strain gauge bridges. State-of-theart design and laser-trimming, wide temperature range operation, and small size make it very suitable for industrial process control applications. In addition, the optional external transistor allows even higher precision. The two-wire transmitter allows signal and power to be supp...