Texas Instruments PGA302EVM-037, Руководство пользователя

Страница: 34 / 50

Software
www.ti.com
34 SLDU031 – December 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
PGAxxxEVM-037 Pressure Sensor Signal Conditioner Evaluation Module
Table 6. Fault Status Indicators (continued)
Fault Indicator Description
OWI Invalid CMD OWI command field invalid. See device datasheet for available OWI commands
VBRG_OV Bridge Supply OV Flag; Bridge Supply voltage > 1.15 times nominal value
VBRG_UV Bridge Supply UV Flag; Bridge Supply voltage < 0.85 times nominal value
REF_OV Reference OV Flag; Reference voltage > 1.1 times nominal value
REF_UV Reference UV Flag; Reference voltage > 0.9 times nominal value
DVDD_OV DVDD OV Flag; DVDD voltage > 1.15 times nominal value
DVDD_UV DVDD UV Flag; DVDD voltage < 0.9 times nominal value
VINP_OV Overvoltage on VINPP or VINPN pins
VINP_UV Undervoltage on VINPP or VINPN pins
VINT_OV Overvoltage on VINTP or VINTN pins
VINT_UV Undervoltage on VINTP or VINTN pins
PGAIN_OV Overvoltage at PGAIN output
PGAIN_UV Undervoltage at PGAIN output
TGAIN_OV Overvoltage at TGAIN output
TGAIN_UV Undervoltage at TGAIN output
4.15.5 Resistive Bridge Configuration Panel
Figure 26. Resistive Bridge Configuration Panel
The Resistive Bridge Configuration panel allows the user to control the digital potentiometer that makes up
one leg of the resistive bridge emulator on the EVM. This can be used to generate a differential voltage
across the VINTP and VINTN or the VINPP and VINPN pins depending on the jumper configuration. The
drop-down box allows the user to select a resistance in k
Ω ; the resulting change in the Vp voltage as well
as the differential voltage of Vp – Vn are automatically updated in the schematic.