MLX90819 Datasheet, PDF (1/11 Pages) Melexis Microelectronic Systems – Relative Integrated Pressure Sensor Datasheet

MLX90819
Relative Integrated Pressure Sensor Datasheet
1. Features and Benefits
 Fully integrated IC: MEMS, analog front
end, 16 bit microcontroller, analog back
end, voltage regulators, SENT driver
 Ratiometric Analog and SENT outputs
 Automotive temperature (-40°C to 150°C)
 Automotive qualified beyond AECQ100
 Automotive diagnostic features (clamping
levels, broken track diagnostics, multiple
internal fault diagnostics)
 Glass pedestal for easy assembly and for
back side exposed configuration for higher
resistance to common automotive media
 High accuracy and robust EMC
performance
3. Description
The MLX90819 is an integrated relative pressure sensor
delivering a ratiometric analog or digital (using the SENT
protocol) signal.
Use of an optimized architecture and a high density
CMOS technology imparts the MLX90819 with best in
class automotive EMC performance. A DSP based
architecture using a 16bit microcontroller provides
outstanding performance in terms of initial accuracy.
The MLX90819 is mounted on a glass pedestal to ease the
assembly of the die at the customers being the ideal
solution for back side exposed pressure sensor
applications requiring high accuracy, high EMC
robustness, miniaturization and compliance to harsh
automotive environments (See application note 90819
Pressure Sensor Assembly Guidelines).
Piezoresistive
sensing element
Temperature
Sensor
G
Diagnostic
Signals
DSP
Analog/
Digital
Regulator
Rev. Pol.
&
OverVolt.
C
M
U
X
A
D
Gain & Offset
temperature
compensation
Pressure Linearization
Programmable filter
Diagnostics Logic
D
A
Gain
RAM
EEP
ROM
VDD
OUT
TX
(SENT)
GND
Figure 1: Block Diagram
2. Application Examples
 Mid pressure ranges (10..50bar)
 Automotive oil (engine, transmissions)
 Automotive HVAC
 Automotive fuel line
 Industrial applications
REVISION 3 – OCTOBER 20, 2016
3901090819