|
|
PDF MLX90809 Data sheet ( Hoja de datos )
| Número de pieza | MLX90809 | |
| Descripción | Relative Pressure Sensor | |
| Fabricantes | Melexis | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MLX90809 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
MLX90809
Relative Pressure Sensor
Features and Benefits
High accuracy relative pressure sensor (+/-
1.5%FSO)
Ratiometric Analog Output or digital SENT
output
Fully integrated IC: MEMS, analog front end
circuitry, 16 bit microcontroller, analog back
end circuitry, voltage regulators
Large automotive temperature range (-40°C to
150°C)
Automotive qualified and automotive
diagnostic features (clamping levels, broken
track diagnostics, multiple internal fault
diagnostics)
Factory calibrated and/or fully programmable
through the connector for customized
calibration curves
Back side exposed relative pressure sensor
for higher resistance to common automotive
media
Assembled in a robust easy to seal package
Application Examples
Automotive applications
Vacuum measurement
Clogged filter detection
Seat lumbar cushion sensor
Industrial applications
Vacuum sensor
Process monitoring
Fluid pressure (low pressure/high
accuracy)
Consumer/Home appliance applications
Filter monitoring
Dispensing/metering systems
White goods
Ordering Information
Part No.
MLX90809
MLX90809
MLX90809
Temperature Code
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
Package Code
XG
XG
XG
Option Code
EAD-000
EAD-003
EAD-100
Packing Form Code
RE
RE
RE
Option code legend:
EAD-000 = 0.05 to -1.05 bar relative pressure / 0.5 to 4.5 V analog output
EAD-003 = 0 to 1 bar relative pressure / 0.5 to 4.5 V analog output
EAD-100 = 0.05 to -1.2 bar relative pressure / 193 to 3896 LSB SENT output
Rev 002
390109080901
Page 1 of 11
Data Sheet
Oct/14
1 page  
MLX90809
Relative Pressure Sensor
7 Detailed General Description
The pressure sensing element consists of a square diaphragm realized in the silicon chip by backside
etching. The diaphragm reacts to a pressure difference between the top and bottom side of the diaphragm.
The internal strain increases, in particular at the border of the diaphragm. Here, the piezo-resistive elements
have been implanted into the silicon diaphragm, which act as a transducer.
The electronics front end amplifies the signal from the bridge, performs a coarse offset compensation and an
ADC conversion. The DSP performs the compensations over temperature. Furthermore, the digital circuit
provides some filtering, the possibility to linearize the pressure signal and also implements the clamping
function. The analog back end consists of a 12 bit DAC and an output driver. This chip delivers an analog
output proportional to the pressure or a SENT output compliant with SAE J2716 spec dated January 2010.
A broken wire detection block allows actively driving the output to one of the rails in case of a broken supply
or ground connection. Extensive protection of the supply lines allows the MLX90809 to handle extreme
overvoltage conditions and is immune to severe external disturbances. Several diagnostic functions (over-
voltage, under-voltage, overpressure, under pressure detections) have been implemented on the 90809 and
can be enabled by programming EEPROM settings. Figure 2 describes MLX90809 block diagram.
Piezoresistive
sensing element
Temperature
sensor
Gain & Offset
compensation
OPA
Diagnostic signals
Broken wire
Test detection
DSP
Micro controller
Gain & Offset temperature
M ADC
U 16 bits
compensation
Pressure Linearization
X Programmable filter
Diagnostics Logic
Rom
FW
EE
PROM
Ram
Figure 2: MLX90809 block diagram
Overvoltage &
reverse voltage
protection
Vext
Analog & Digital
Regulator and
POR
DAC
12 bits
Analog driver
Analog
Gain
Output
Slew
rate
control
SENT driver
SENT
Output
Ground
Rev 002
390109080901
Page 5 of 11
Data Sheet
Oct/14
5 Page 
MLX90809
Relative Pressure Sensor
13 Disclaimer
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its
Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the
information set forth herein or regarding the freedom of the described devices from patent infringement.
Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior
to designing this product into a system, it is necessary to check with Melexis for current information. This
product is intended for use in normal commercial applications. Applications requiring extended temperature
range, unusual environmental requirements, or high reliability applications, such as military, medical life-
support or life-sustaining equipment are specifically not recommended without additional processing by
Melexis for each application.
The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be
liable to recipient or any third party for any damages, including but not limited to personal injury, property
damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential
damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical
data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering
of technical or other services.
© 2014 Melexis NV. All rights reserved.
For the latest version of this document, go to our website at
www.melexis.com
Europe, Africa, Asia:
Phone: +32 1367 0495
E-mail: [email protected]
America:
Phone: +1 248 306 5400
E-mail: [email protected]
ISO/TS 16949 and ISO14001 Certified
Rev 002
390109080901
Page 11 of 11
Data Sheet
Oct/14
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MLX90809.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MLX90804 | Speed regulator | Melexis |
| MLX90805 | Intelligent Triac Controller | Melexis |
| MLX90807 | Integrated Relative and Absolute Pressure Sensors | Melexis |
| MLX90808 | Integrated Relative and Absolute Pressure Sensors | Melexis |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |