MLX90314 Datasheet, PDF (1/26 Pages) List of Unclassifed Manufacturers – Programmable Sensor Interface

MLX90314AB
Programmable Sensor Interface
Features and Benefits
Microprocessor-controlled signal conditioning for bridge-type sensors
Suited for low-cost sensors: reduction of non-linearity by programmable coefficients
External or internal temperature sensor for compensating temperature errors
Versatile output signal ranges: 4, 5, 10, or 11V_DC; 4 to 20 mA loop
Mass calibration easy with 2400 or 9600 baud UART
Power supply from 6 to 35V_DC
Applications
Pressure transducers
Accelerometers
Temperature sensor assemblies
Linear position sensors
Ordering Information
art No.
MLX90314AB
MLX90314AB
Temperature Suffix
L
L
*UD denotes unpackaged die
Package
LW
UD*
Option
Temperature Range
-40C to 140C
-40C to 140C
Description
The MLX90314AB is a dedicated microcontroller which performs signal conditioning for sensors wired in
bridge or differential configurations. Sensors that can be used include thermistors, strain gauges, load cells,
pressure sensors, accelerometers, etc. The signal conditioning includes gain adjustment, offset control, high
order temperature and linearity compensation. Compensation values are stored in EEPROM and are re-
programmable. Programming is accomplished by using a PC, with an interface circuit (level shifting and glue
logic), and provided software.
The application circuits can provide an
output of an absolute voltage, relative
voltage, or current. The output can be
range limited with defined outputs when
the signal is beyond the programmed
limits. Other features include alarm
outputs and level steering. The robust
electrical design allows the MLX90314AB
to be used where most signal conditioning
and sensor interface circuits cannot be
used. Voltage regulation control is
provided for absolute voltage and current
modes (external FET required).
The standard package is a plastic
SO16W. The device is static-sensitive and
requires ESD precautions.
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