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.