1 Features

• Easy-to-design input/output ranges: 0mA–20mA,

4mA–20mA, 5mA–25mA or configurable voltage

outputs

• Nonlinearity: 0.002%

• Low offset drift: 1μV/°C

• Accuracy: 0.015%

• Single-supply operation

• Wide supply range: 7V to 44V

• Output error flag (EF)

• Output disable (OD)

• Adjustable voltage regulator: 3V to 15V

• Packages:

– 10-pin HVSSOP

– 10-pin VSON

2 Applications

• HVAC valve and actuator control

• Analog output module

• CPU (PLC controller)

• Flow transmitter

3 Description

The XTR111 is a precision voltage-to-current

converter designed for the standard 0mA to 20mA

or 4mA to 20mA analog signals, and sources up to

32mA. The ratio between input voltage and output

current is set by a single resistor, RSET. The circuit

can also be modified for voltage-output operation.

An external P-MOSFET transistor provides high

output resistance and a broad-compliance voltage

range that extends from 2V less than the supply

voltage, VVSP, to voltages far less than ground.

The adjustable 3V to 15V subregulator output

provides the supply voltage for additional circuitry.

The XTR111 is available in 10-pin HVSSOP and

VSON surface-mount packages.