下载
1 XTR300 and XTR300EVM Overview
1.1 XTR300
User's Guide
SBOU034 – February 2006
XTR300EVM User’s Guide
This user’s guide describes the characteristics, operation, and use of the XTR300EVM
evaluation module (EVM). This EVM features the XTR300 and has a flexible
configuration, allowing for evaluation suitable to a variety of applications.
The following related documents are available through the Texas Instruments web site
at www.ti.com .
Table 1. Related Documentation
from Texas Instruments
DOCUMENT LITERATURE NUMBER
XTR300 Product Data Sheet SBOS336
QFN / SON PCB Attachment
SLUA271
Application Note
Quad Flatpack No-Lead Logic
SCBA017
Packages Application Note
The XTR300 is a complete output driver for industrial and process control applications. The XTR300 can
be configured for current ( ± 20mA) or voltage ( ± 10V) output through pins M1 and M2. No external shunt
resistor is required. Only external gain-setting resistors and a loop compensation capacitor are required.
The XTR300 offers separate driver and receiver channels for improved flexibility. The internal
instrumentation amplifier (IA) is normally connected for remote voltage sensing in voltage output mode.
Alternatively, it can be used as a high voltage, high impedance measurement channel. In voltage output
mode, a copy of the output current is provided to allow easy testing of the load condition and eventual
calculation of the load resistance. In current output mode, the voltage can be monitored. Using the monitor
outputs along with the error flags will provide full test capability of the XTR300 in operation.
Error flags (EF) are provided to indicate fault conditions on the output. These flags indicate:
• a thermal overload condition (EF
OT
);
• a violation of the common-mode input range of the instrumentation amplifier (EF
CM
);
• an over-current or short-circuit condition in the load (EF
LD
) in voltage output mode, or open or high load
resistance in current output mode.
Although the XTR300 is not designed with thermal shutdown, an automatic thermal protection function can
be implemented simply by connecting EF
OT
to OD (requires an external pull-up resistor), disabling the
output. This connection is not made internally to allow flexibility in how a system handles an
over-temperature condition.
All trademarks are the property of their respective owners.
SBOU034 – February 2006 XTR300EVM User’s Guide 1
Submit Documentation Feedback
