PGA309EVM-USB Datasheet, PDF (47/54 Pages) Texas Instruments – This user’s guide describes the characteristics, operation, and use of the PGA309EVM-USB evaluation module (EVM).

www.ti.com
PGA309EVM-USB Software Overview
4.14 Create Sensor Emulator File: Detailed Discussion
The Create Sensor File utility enables users to create a sensor data file for the sensor emulator tool in
order to generate signals that emulate the behavior of a real-world sensor. This utility requires a multi-step
process to create a sensor emulator file. Figure 36 shows the first three steps in the process.
Figure 36. PGA309EVM-USB Software: Create Sensor Emulator File
Step 1. Select the way that data are entered for the model.
The most common way is to enter raw data. Raw data can either be measured sensor data or values
input from a product data sheet. Raw data are given as sensor outputs at specific temperatures. A
second way to enter the sensor data is to select the Enter Bridge Characteristics option. When using
this option, you must also enter the drift and offset numbers in ppm/°C directly from the data sheet.
Step 2. Specify the type of temperature sensor used (diode, RT, or raw).
Note that you cannot use the emulator for the internal temperature sensor mode of operation. For both
the diode and Rt methods, the emulator generates an input signal that matches the real-world
equivalent. The raw data option for the temperature sensor allows you to enter any arbitrary voltage vs
temperature data. This option could be used for unique temperature sensor signals (for example, not
the diode or Rt methods).
Step 3. Enter the temperature range for the sensor emulator function to operate in.
After the temperature range is entered, additional tabs appear that must be completed; these tabs are
noted in Figure 37.
SBOU084A – February 2010 – Revised February 2011
Submit Documentation Feedback
© 2010–2011, Texas Instruments Incorporated
PGA309EVM-USB
47