HAC830CV-M-A-2-A-2 Datasheet, PDF (15/49 Pages) Micronas – Robust Multi-Purpose Programmable Linear Hall-Effect Sensor with Integrated Capacitors

DATA SHEET
HAC 830
TC Register
The temperature dependence of the magnetic sensitivity can be adapted to different
magnetic materials in order to compensate for the change of the magnetic strength with
temperature. The adaptation is done by programming the TC (Temperature Coefficient)
and the TCSQ registers (Quadratic Temperature Coefficient). Thereby, the slope and
the curvature of the temperature dependence of the magnetic sensitivity can be
matched to the magnet and the sensor assembly. As a result, the output voltage char-
acteristic can be constant over the full temperature range. The sensor can compensate
for linear temperature coefficients ranging from about 3100 ppm/K up to 1000 ppm/K
and quadratic coefficients from about -7 ppm/K² to 2 ppm/K².
The full TC range is separated in the following four TC range groups (see Table 3–5
below and Table 5–1 on page 36).
Table 3–5: TC-Range Groups
TC-Range [ppm/k]
3100 to 1800
1750 to 550
500 to +450 (default value)
+450 to +1000
TC-Range Group
(see also Table 6–1 on page 40)
0
2
1
3
TC (5 bit) and TCSQ (3 bit) have to be selected individually within each of the four
ranges. For example 0 ppm/k requires TC-Range = 1, TC = 15 and TCSQ = 1. Please
refer to Section 5.3. for more details.
Micronas
Feb. 24, 2016; DSH000178_001EN
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