ZSSC3170 Datasheet, PDF (23/27 Pages) List of Unclassifed Manufacturers – Automotive Sensor Signal Conditioner with LIN and PWM Interface

ZSSC3170
Automotive Sensor Signal Conditioner with LIN and PWM Interface
b) Type the desired sensor target corresponding in percent to the VDD supply. It is recommended that
the output targets for the sensor points be in between 10% and 90%.
c) Next start data collection. Normally this would be done with a real sensor attached on a remote
board in a controlled chamber. Instead, this calibration example run uses the SRB as the input as
follows:
 Minimum [10%] Sensor Signal: turn the SRB counter-clockwise (CCW) to the end and press the
B1M button.
 Maximum [90%] Sensor Signal: turn the SRB clockwise (CW) to the end and press the B2M
button.
Acquired data will be displayed in the text boxes next to the buttons.
Note: only active buttons corresponding to the calibration mode are green.
4.4. Calculation of the Coefficients and Limits
a) The calcCoeff button at the right of the “Sensor – Calibration” screen calculates the calibration
coefficients. The result of the calculation (if successful) is displayed on the screen (see Figure 4.4).
The CMC removes the offset and temperature dependency so that the measuring output result is
within the target values (%VDDA or in this case, between 10% and 90%).
Note: The number of calibration points is equal to the number of coefficients to be calculated.
b) The Limits Calc button calculates sensor aging (CMV) and output limits.
c) Click on writeEEP to make these calculations effective and written in the EEPROM. Option: starting
a measuring cycle can be triggered by pressing the cycle button.
Close the calibration window and trigger a measurement in the main window (see Figure 3.1) by clicking on
either the Read or Read Loop button in the “Read Out Data” section. The ZSSC3170 is already running in
Normal Operation Mode (NOM) because the cycle button was pressed in the calibration window.
Measurement results can also be displayed in % by opening the “Tools -> Measure Output” window and
selecting the output format in the checkbox.
Evaluation Kit
November 28, 2012
© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 2.00
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the
prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
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