TLE4997 Datasheet, PDF (23/36 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor for Industrial Use

TLE4997I
Signal Processing
6.6
Clamping
The clamping function is useful for splitting the output voltage into the operating range
and error ranges. If the magnetic field is outside the selected measurement range, the
output voltage V_out is limited to the clamping values.
Table 12 Clamping
Parameter
Symbol Limit Values Unit Notes
min. max.
Register size
Clamping voltage low
Clamping voltage high
Clamping quantization
steps
Clamping voltage drift
CL,CH
V_CLL
V_CLH
∆V_CLQ
∆V_CL
2 x 12
0
100
0
100
1.22
-0.5 0.5
-0.5 0.5
bit
% V_DD
% V_DD
mV
1)
1)
@ V_DD = 5 V
% V_DD In lifetime²⁾
Over temperature²⁾
1) _{If clamping is set, it must be within the allowed output voltage range to be effective.}
2) _{Valid in the range (5% of VDD) < VOUT < (95% of VDD)}
The clamping values are calculated by:
Clamping low voltage:
Clamping high voltage:
V_CLL
=
--C-----L----
4096
×
V_D
D
V_CLH
=
--C----H-----
4096
×
V_D
D
Note: For an exact setup, the register value may be re-adjusted due to the actual output
voltage in the clamping condition. The output voltage range itself has electrical
limits. See the Electrical Characteristics of V_out.
Data Sheet
23
V 1.0, 2007-06