Universal Sensors and Transducers Interface
Universal Sensors and Transducers Interface
USTI
FEATURES
www.DataSheet4U.net 29 measuring
FUNCTIONAL BLOCK DIAGRAM
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Description
Universal Sensors and Transducers Interface
USTI
FEATURES
www.DataSheet4U.net 29 measuring
FUNCTIONAL BLOCK DIAGRAM
modes and one generator mode 2 identical channels Provides frequency (time)-to-digital conversion for many types of sensors and transducers Provides interfacing for resistive (including platinum (Pt), cuprum (Cu) resistors and thermistors (Ni)), capacitive sensing elements and resistive bridges Frequency range from 0.05 Hz up to 9 MHz without prescaling and 144 MHz with prescaling; Programmable accuracy (relative error) for frequency (period) conversion from 1 % to 0.0005% Relative quantization error is constant in all specified frequency range Non-redundant conversion time Scalable resolution Internal reference clock 625 kHz, 20 MHz @ 20 MHz quartz oscillator Quartz-accurate automated calibration 3-wire serial interface (SPI compatible) 2-wire interface (I2C compatible) RS-232/485 serial interface Master and slave communication modes Frequency generator mode 10 MHz with quartz crystal stability
resolution and programmable accuracy during the nonredundant conversion time. The USTI covers a wide range of frequencies and accuracies for modern frequency-time domain sensors. In addition, the USTI provides interfacing for resistive (including platinum, cuprum resistors and thermistors), capacitive sensing elements and resistive bridges. By using this IC it is possible to build a wide variety of digital, smart sensors and intelligen...
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