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PDF USTI Data sheet ( Hoja de datos )
| Número de pieza | USTI | |
| Descripción | Universal Sensors and Transducers Interface | |
| Fabricantes | TECHNOLOGY ASSISTANCE | |
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Universal Sensors and Transducers
Interface
USTI
FEATURES
www.Dat2a9Shemet4eUa.nseut ring 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
APPLICATIONS
Physical and Chemical Sensor Systems
Digital Sensors, SoC, SiP, BioMEMS, Lab-on-Chip
Smart and Intelligent Sensors and Systems
Industrial and Process Control
Data Acquisition Systems
Instrumentations
Customer Electronics
Automotive
GENERAL DESCRIPTION
The Universal Sensors and Transducers Interface
(USTI) is a fully digital CMOS integrated circuit of
universal, 2-channel, high precision, multifunctional
converter based on novel, advanced methods for
frequency, period, its ratio, duty-cycle and phase-shift
measurements. It is perfectly suited to any applications
where frequency-time parameters but also sensors
output signal, have to be measured with highest
FUNCTIONAL BLOCK DIAGRAM
resolution and programmable accuracy during the non-
redundant 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 intelligent sensor systems.
The device represents a high-resolution conversion
and designed to support all range of frequency-time
domain and digital sensor applications. It offers high
performances with flexibility and requires minimum
possible number of external components.
The USTI can be easy included into digital
environment, controlled by an external microcontroller
(slave mode) or work independently as a separate
measuring unit without an external control (master
mode). The function selection can be configured in
both software and hardware.
The IC converts frequency-time domain signals,
resistance and capacitance of sensing elements and
resistance of sensor bridges into digital and provides
digital, bus interface to microcontroller, DAQ or sensor
system to read these digital results. Sensing elements
can be directly connected to the USTI without the need
for extra electronics. Only a single reference element,
of the same kind as the sensor, is required.
The USTI has 29 measuring and one generating
modes. The measuring mode can be hardware-
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet USTI.PDF ] | |
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