TLE4990

Programmable Linear Hall Sensor

Signal Processing

Data Sheet

17

V 2.4, 2005-11

6.4

Clamping

Note: The Clamping function is not enabled in the -E6782 version

The clamping function is useful to split the output voltage range into operating range and

error ranges.

If the magnetic field is outside the selected measurement range, the output voltage

is limited to the clamping values.

Therefore an output voltage in the error range indicates a wire breakage (see Open

Circuit (OBD parameters), Table 12) or a short circuit.

The clamping function is enabled, when the clamp bit is set.

The following figure shows how the magnetic field range between

mapped to voltages between 0.5 V and 4.5 V.

If it is not necessary to signal errors, the clamping should be disabled. In this case the

maximum output voltage range between 0.3 V and 4.7 V can be used.

Figure 5

Clamping

Table 11

Clamping Ranges

Parameter

Symbol Limit Values

Unit

Notes

min.

max.

Clamping voltage low

12

%

of

Clamping voltage high

92

%

of

1)

0

1

B

min

B

B

max

V

5

2

4

3

Error range

Error range

Operating range

V

CLL

V

CLH