MLX90314_12 Datasheet, PDF (1/28 Pages) Melexis Microelectronic Systems – Programmable Sensor Interface

MLX90314
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 Code
Product Code Temperature Code
Package Code
Option Code
MLX90314
L
MLX90314
L
Legend:
DF
BAA-000
DF
BAA-000
Temperature Code:
Package Code:
Packing Form:
L for Temperature Range -40°C to 150°C
DF for SOIC300Mil
RE for Reel, TU for Tube
Packing Form Code
TU
RE
Ordering example:
MLX90314LDF-BAA-000-TU
Description
The MLX90314 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 MLX90314 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.
3901090314
Rev 008
Page 1
Apr/12