ZHCSH81 December 2017 PGA302
PRODUCTION DATA.
The device includes circuits to monitor bridge connectivity and temperature sensor connectivity fault. Note that temperature sensor connectivity fault is monitored only in 16-pin package option. Specifically, the device monitors the bridge pins for opens (including loss of connection from the sensor), short-to-ground, and short-to-sensor supply.
Fault No. | Fault Mode | Chip Behavior |
---|---|---|
1 | VBRGP Open | VINP_UV and PGAIN_UV flags set |
2 | VBRGN Open | N/A |
3 | VINPP Open | VINP_UV and PGAIN_UV flags set |
4 | VINPN Open | VINP_UV and PGAIN_UV flags set |
5 | VBRGP Shorted to VBRGN | VBRG_UV, VINP_UV and PGAIN_UV flags set |
6 | VBRGP Shorted to VINPP | VINP_OV and PGAIN_OV flags set |
7 | VBRGP Shorted to VINPN | VINP_OV and PGAIN_OV flags set |
8 | VINPP shorted to VINPN | N/A |
9 | VINNPP shorted to VBRGN | VINP_UV and PGAIN_UV flags set |
10 | Temperature path is differential, VINTP Open | TGAIN_UV flag set |
11 | Temperature path is differential, VINTN Open | VINT_OV and TGAIN_OV flags set |
12 | Temperature path is differential, VINTP shorted to VINTN | N/A |
13 | Temperature path is single-ended, VINTP Open | TGAIN_UV flag set |
14 | Temperature path is single-ended, VINTN Shorted to ground | TGAIN_UV flag set |
The thresholds for connectivity fault are derived off of VBRDG voltage.