HAC830CV-M-A-2-A-2 Datasheet, PDF(20/49 Page) Micronas – Robust Multi-Purpose Programmable Linear Hall-Effect Sensor with Integrated Capacitors

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

HAC830CV-M-A-2-A-2 Datasheet, PDF (20/49 Pages) Micronas – Robust Multi-Purpose Programmable Linear Hall-Effect Sensor with Integrated Capacitors

◁

DATA SHEET

HAC 830

Step 4: Calculation of VOQ and Sensitivity

Set the system to calibration point 1 and read the register D/A-READOUT. The result is

the value D/A-READOUT1.

Now, set the system to calibration point 2, read the register D/A-READOUT again, and

get the value D/A-READOUT2.

With these values and the target values VOUT1 and VOUT2, for the calibration points 1

and 2, respectively, the values for Sensitivity and VOQ are calculated as:

Sensitivity = SensINITIAL ï´

--------------------ï¨---V----o---u---t--2-----â----V----o----u---t--1----ï©-------------------

ï¨D/A-Readout2 â D/A-Readout1ï©

ï´

1----6---3---8---4-

VOQ

--1--- ï´

V-----o---u---t--2-----ï´-----1---6---3---8---4-

ï¨ D/A-Readout2

8192ï©

ï´

Sensitivity

ï´

----------------1----------------

SensINITIAL

ï´ -----5------

1024

This calculation has to be done individually for each sensor.

Next, write the calculated values for Sensitivity and VOQ into the IC for adjusting the

sensor. At that time it is also possible to store the application specific values for Clamp-

Low and Clamp-High into the sensorâs EEPROM.The sensor is now calibrated for the

customer application. However, the programming can be changed again and again if

necessary.

Note

For a recalibration, the calibration procedure has to be started at the begin-

ning (step 1). A new initialization is necessary, as the initial values from

step 1 are overwritten in step 4.

Micronas

Feb. 24, 2016; DSH000178_001EN

▷