TLE4997 Datasheet, PDF (25/36 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor for Industrial Use

TLE4997I
Error Detection
7
Error Detection
Different error cases can be detected by the On-Board-Diagnostics (OBD) and reported
to the microcontroller. The OBD is useful only when the clamping function is enabled. It
is important to set the clamping threshold values inside the error voltage values shown
in Table 13 and Table 14 to ensure that it is possible to distinguish between correct
output voltages and error signals.
7.1
Voltages Outside the Operating Range
The output signals error conditions, if V_DD lies
• inside the ratings specified in Table 2 "Absolute Maximum Ratings" on Page 12
• outside the range specified in Table 3 "Operating Range" on Page 13.
Table 13 Undervoltage and Overvoltage
(R_LOAD ≥ 10k pull down or 50k pull up)
Parameter
Symbol Limit Values
Unit Notes
min.
max.
Undervoltage threshold V_DDuv
Overvoltage threshold V_DDov
Output voltage
@ overvoltage
V_OUTov
Supply current ¹⁾
I_DDuv
3
4
7
8.3
0.96 x V_DD -
-
10
V
V
V
V_DDov < V_DD ≤ 16 V
mA @ undervoltage
1) _{For overvoltage and reverse voltage, see Table 2 "Absolute Maximum Ratings" on Page 12.}
7.2
Open Circuit of Supply Lines
In the case of interrupted supply lines, the data acquisition device can alert the user.
Table 14 Open Circuit (OBD Parameters) ¹⁾
Parameter
Symbol Limit Values
min.
max.
Output voltage
V_OUT 0
0.2
@ open V_DD line
Output voltage
V_OUT 4.8
5
@ open V_SS line
1) _{With VDD = 5 V and RL ≥ 10 kΩ pull-down or RL ≥ 50 kΩ pull-up.}
Unit
V
V
Notes
Data Sheet
25
V 1.0, 2007-06