HAC830CV-M-A-2-A-2 Datasheet, PDF (11/49 Pages) Micronas – Robust Multi-Purpose Programmable Linear Hall-Effect Sensor with Integrated Capacitors

DATA SHEET
HAC 830
3.2. Digital Signal Processing and EEPROM
The DSP performs signal conditioning and allows adaption of the sensor to the cus-
tomer application. The parameters for the DSP are stored in the EEPROM registers.
The details are shown in Fig. 3–3.
Terminology:
SENSITIVITY:name of the register or register value
Sensitivity: name of the parameter
The EEPROM registers consist of four groups:
Group 1 contains the registers for the adaptation of the sensor to the magnetic system:
MODE for selecting the magnetic field range and filter frequency, TC, TCSQ and TC-
Range for the temperature characteristics of the magnetic sensitivity.
Group 2 contains the registers for defining the output characteristics: SENSITIVITY,
VOQ, CLAMP-LOW (MIN-OUT), CLAMP-HIGH (MAX-OUT) and OUTPUT MODE. The
output characteristic of the sensor is defined by these parameters.
– The parameter V_OQ (Output Quiescent Voltage) corresponds to the output signal at B
= 0 mT.
– The parameter Sensitivity defines the magnetic sensitivity:
Sensitivity
=
_-----V_{---O----U---T-}
B
– The output voltage can be calculated as:
V_OUT  Sensitivity  B + V_OQ
The output voltage range can be clamped by setting the registers CLAMP-LOW and
CLAMP-HIGH in order to enable failure detection (such as short-circuits to VSUP or
GND and open connections).
Micronas
Feb. 24, 2016; DSH000178_001EN
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