[Excelera, S. L.]

GENERAL DESCRIPTION
The Universal Sensors and Transducers Interface (USTI-EXT) is a fully digital CMOS integrated circuit based on novel patented methods for frequency, period, its ratio, duty-cycle and phase-shift measurements. This IC has similar metrological performance as Excelera’s UFDC-1M-16 and same functionalities as the USTI IC but can work in extended operation temperature range from - 55 ºC to +150 ºC.

FEATURES
 • 29 measuring modes and one generator mode
 • 2 channels for frequency and period measurements
 • Frequency (time)-to-digital conversion for many types of sensors and transducers
 • Interfacing for resistive (including platinum (Pt), cuprum (Cu) resistors and thermistors (Ni)), capacitive sensing elements and resistive bridges
 • Frequency range from 1 Hz up to 7.5 MHz without prescaling and 120 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 16 MHz @ 16 MHz quartz oscillator
 • Quartz-accurate automated calibration
 • 3-wire serial interface (SPI compatible)
 • 2-wire interface (I2C compatible)
 • RS232/485 serial interface
 • Master and slave communication modes
 • Frequency generator mode 8 MHz with quartz crystal stability
 • Operating temperature range -55 ºC to +150 ºC

APPLICATIONS
    Physical and Chemical Sensor Systems
    Digital Sensors, SoC, SiP
    Smart and Intelligent Sensors and Systems
    Industrial and Process Control
    Data Acquisition Systems
    Instrumentations
    Customer Electronics
    Automotive