The XTR106 is a monolithic 4mA to
20mA, two-wire current transmitter designed for cost-optimized bridge sensor
applications. This device provides complete bridge excitation (2.5V or 5V
reference), instrumentation amplifier, sensor linearization, and current output
circuitry. Current for powering additional external input circuitry is available
from the VREG pin.
The instrumentation amplifier can be
used over a wide range of gain, accommodating a variety of input signal types and
sensors. Total unadjusted error of the complete current transmitter, including the
linearized bridge, is low enough to permit use without adjustment in many
applications. The XTR106 operates on loop power supply voltages down to 7.5V.
Linearization circuitry provides
second-order correction to the transfer function by controlling bridge excitation
voltage. The device provides up to a 20:1 improvement in nonlinearity, even with
cost-optimized transducers.
The XTR106 is available in 14-pin
plastic DIP and 14-pin SOIC surface-mount packages, and is specified for the –40°C
to +85°C temperature range. The device operates from –40°C to +125°C.
The XTR106 is a monolithic 4mA to
20mA, two-wire current transmitter designed for cost-optimized bridge sensor
applications. This device provides complete bridge excitation (2.5V or 5V
reference), instrumentation amplifier, sensor linearization, and current output
circuitry. Current for powering additional external input circuitry is available
from the VREG pin.
The instrumentation amplifier can be
used over a wide range of gain, accommodating a variety of input signal types and
sensors. Total unadjusted error of the complete current transmitter, including the
linearized bridge, is low enough to permit use without adjustment in many
applications. The XTR106 operates on loop power supply voltages down to 7.5V.
Linearization circuitry provides
second-order correction to the transfer function by controlling bridge excitation
voltage. The device provides up to a 20:1 improvement in nonlinearity, even with
cost-optimized transducers.
The XTR106 is available in 14-pin
plastic DIP and 14-pin SOIC surface-mount packages, and is specified for the –40°C
to +85°C temperature range. The device operates from –40°C to +125°C.