MLX90320LFRLFR MELEXIS [Melexis Microelectronic Systems], MLX90320LFRLFR Datasheet - Page 26

• Manufacturer Part Number: MLX90320LFRLFR
• Description: Automotive small sensor interface
• Manufacturer: MELEXIS [Melexis Microelectronic Systems]

8 to 10
11
15
12 to 14
15
16 to 18
19
23
20 to 22
23
27
23
24 to 26
28 to 30
31
31
3901090320
Rev 004
0 to 3
0 to 3
1 to 3
0 to 3
0
0 to 3
0 to 3
2 and 3
0 to 3
0
0 to 3
1
0 to 3
0 to 3
0
1 to 3
G1 for Gain DAC
CSOF[6..0]
G0 for Gain DAC
ClampSet
T1 for Offset DAC
CLAMP[5..0]
O2 for Offset DAC
TMP_OFFSET[4:0]
TMP_SELECT
O1 for Offset DAC
O0 for Offset DAC
NOT USED
TMP_GAIN[2:0]
Page 26 of 32
CG[2:0] = 111 means maximum gain (13*5*1.9375) and
CG[2:0] = 000 means minimum gain (3.25*2*1.24).
Contains the first order fine gain coefficient used to
compensate the sensor sensitivity drift with temperature.
The MSB is the sign bit (two’s complement): If G1[11] =
1 then G1 is negative, if G1[11] = 0 then G1 is positive.
7 bits used to operate the coarse offset calibration.
Contains the zero order fine gain coefficient
(independent from the temperature) used to adjust
accurately the output span at room temperature. 12 bits
are stored but only the 10 first are used. The two MSB
must be 0.
Bit used to enable(when ClampSet =1) or disable(when
Clampset=0) the clamping
Contains the value of T1 used to calculate the fine offset
in order to operate the second order compensation of
the offset drift with temperature.
6 bits used for calibrating the clamping levels.
CLAMP[2:0] are used for the low clamp levels (000
gives 4% at output and 111 gives 14% at output) and
CLAMP[5:3] are used for the high clamp levels (000
gives 86% at output and 111 gives 96% at output).
Contains the second order fine offset coefficient used to
compensate the offset drift with temperature.
The MSB is the sign bit (two’s complement): If O2[11] =
1 then O2 is negative, if O2[11] = 0 then O2 is positive.
These 5 bits are used to calibrate the offset of the
external temperature sensor. If TMP_OFFSET[4:0] =
11111 then the TMP pin has the lowest voltage. If
TMP_OFFSET[4:0] = 00000 then the TMP pin has the
highest
neighbourhood of 2.5V. The internal temperature sensor
offset calibration is only factory set.
Bit used to choose between an internal or an external
temperature sensor. If TMP_SELECT=1 then the
internal temperature sensor is chosen else an external
temperature sensor is needed.
Contains the first order fine offset coefficient used to
compensate the offset drift with temperature.
The MSB is the sign bit (two’s complement): If O1[11] =
1 then O1 is negative, if O1[11] = 0 then O1 is positive.
Contains the zero order fine offset coefficient
(independent from the temperature) used to
compensate accurately the sensor offset at room
temperature. 12 bits are stored but only the 10 first are
used. The two MSB must be 0.
These 3 bits are used to calibrate the gain of the
Automotive small sensor interface
voltage.
Goal
MLX90320
is
to
Data Sheet
Mar/05
calibrate
in
the