MLX90257
Relative Integrated Pressure Sensor
Features and Benefits
Relative Integrated Pressure sensor
Less than
±1%
error range overall
Programmable through the connector (3 pins)
Trimmable offset and sensitivity
On-Chip Signal Conditioning
Output proportional to the applied pressure
Ratiometric output
Rail-to-rail output
Diagnostics of broken supply wires and broken sensor
Output protected against short-circuits at both battery terminals
Different pressure ranges available
Application Examples
Medical diagnostics
Pumps
Industrial applications
Robotics
Ordering Information
Part No.
MLX90257
MLX90257
Temperature Suffix
L (-40°C to 150°C)
L (-40°C to 150°C)
Package Code
UF (die on foil)
UF (die on foil)
Option
-2
-4
Description
3 to 7 Bar Full Scale
15 to 30 Bar Full Scale
1. Functional Diagram
2. Description
The MLX90257 is an integrated
relative pressure sensor (2
pressure ports) realized in
CMOS technology with
micromachining options. It
consists of an analog signal
chain that interacts with the
digital core and on-chip
temperature sensor in order to
provide uniform overall sensing
characteristics after calibration
and to cancel the temperature
related parameter drifts.
VDD
Chopper
demodulator
Gain
calibration
OUT
Temperature
sensor
ADC
DAC
DIGITAL CORE
Diagnostics
The output is proportional to the applied pressure with an adjustable slope and offset. It is ratiometric and
goes rail-to-rail with a 3mA source and sink capability. Different pressure ranges are available (from 1.2 to
10 Bar full scale ranges, see above ordering information).
3901090257
Rev. 006
Page 1 of 9
Data Sheet
Mar/08
MELEXIS [ Melexis Microelectronic Systems ]
