MLX90320LFRLFR MELEXIS [Melexis Microelectronic Systems], MLX90320LFRLFR Datasheet - Page 16

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

The FLT pin voltage is compared with the DA-converted value of CLAMPLOW
pin voltage is greater than the DA-converted value of CLAMPHIGH
output stage. If the FLT pin voltage is smaller than the DA-converted value of CLAMPLOW
voltage is used as input of the output stage. The transition from in range mode to clamping mode and vice versa
takes place without overshoot.
The output pin low clamping level can be calculated by the formula :
Equation 6
Explanation of parameters used in equation 6:
The output pin high clamp level can be calculated by the formula:
Equation 7
Explanation of parameters used in equation 7:
6.4.4 The Faults detection
by using parity check to detect data corruption and majority voting when accessing the data. Thanks to the setting
of output clamping levels, the MLX90320 output voltage goes to the fault bands to point out that a fault occurred
and that the output signal is unreliable. The MLX90320 contains circuitry which detects and diagnoses the
following faults with the loads as described and specified in and under the conditions of paragraph 5:
Internal faults
Fault detection of INP and INM have the levels at 1.5 and 3.5 Volt (with 5 Volt supply).
3901090320
Rev 004
Vout
Vout
INP and/or INM open
Sensing element supply open
Short-circuit of INP and/or INM with VDD
Short-circuit of INP and/or INM with GND
Short-circuit of FLT with VDD or GND
lowclamp
highclamp
As mentioned before, a reliable memory is obtained by storing each bit three times in the EEPROM and
Vout
Low
Clamplow
address 19.
Vout
High
sample.
Clamphigh
address 19 and 23.
clamp
lowclamp
highclamp
clamp
Low
High
is the lowest clamp level and has a typical value of 4% +/-1% variation from sample to sample.
is the highest clamp level and has a typical value of 96% +/-1% variation from sample to
clamp
dig
dig
clamp
is the output pin low clamping voltage.
is the output pin high clamping voltage.
is the decimal value (range of 0 to 7) of the low clamp level stored in EEPROM at the
is the decimal value (range of 0 to 7) of the high clamp level stored in EEPROM at the
Clamplow
Clamphigh
dig
dig
. 0
013
7
Page 16 of 32
. 0
V
013
DD
V
DD
Automotive small sensor interface
dig
, then this last voltage is used as input of the
dig
and CLAMPHIGH
MLX90320
dig
, then this last
Data Sheet
Mar/05
dig
. If the FLT