Infineon TLE4997, User Manual

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TLE4997
User’s Manual
Configuration & Calibration Parameters
User’s Manual 23 v01_01, 2019-08
4.6 Clamping - CH, CL
The clamping function is useful for separating the output range into an operating range and error ranges. If the
magnetic field is exceeding the selected measurement range, the output voltage V
OUT
is limited to the clamping
values. Any value in the error range is interpreted as an error by the sensor counterpart.
Figure 4-3 shows an example in which the magnetic field range between B
min
and B
max
is mapped to voltages
between 0.8 V and 4.2 V.
Figure 4-3 Clamping Example
Clamping - TLE4997 :
The clamping values are calculated by:
Clamping low voltage :
(4.3)
Table 4-6 Clamping
Parameter Symbol Values Unit Note / Test Condition
Min. Typ. Max.
Clamping low
1)
1) If clamping is set it must be within the allowed output range.
V
CLL
0 – 99.98 %V
DD
Clamping high
1)
V
CLH
0 – 99.98 %V
DD
Clamping quantization steps ΔV
CLQ
– 1.22 – %mV at V
DD
= 5 V
Clamping voltage drift ΔV
CL
-15 15 mV in lifetime
2)
over temperature
2)
2)
Valid in the range (5% of V
DD
) < V
OUT
<(95% of V
DD
) for T
J
≤
120°C
and (6% of V
DD
) < V
OUT
< ( 94% of V
DD
) for 120°C < T
J
≤
150°C
0
1
B
min
B (mT)
B
max
V
out
(V)
5
2
4
3
Error range
Error range
Operating range
V
CLH
V
CLL
V
CLL
CL
4096
------------ V
DD
×
=