Excelera manufactures plug-and-play frequency and analog (capacitive / resistive) to digital signal converters (UFDC, UFDC16, USTI and USTI-EXT).
MMS Electronics Ltd, its UK distributor, presents a new low power product, the USTI-MOB. The Universal Sensors and Transducers Interface (USTI-MOB) is an integrated circuit with reduced power consumption, starting at 15 µA on active mode. This low consumption makes it very useful for always-on and battery powered applications. The new IC has the same functionalities and metrological performances (for frequency and period measurement) as the USTI IC.
The IC is available in four packages: 32-lead, 7×7 mm, Thin Profile Plastic Quad Flat Package (TQFP) and 32-pad, 5 x 5 mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) and a small 4 x 4 mm, QFN/MLF.
A Tool-box for Frequency and Time signals measurement
Measuring frequency, duty-cycle or PWM signals with a micro-controller has always been a challenging and time consuming task. In most cases it is very difficult to achieve a signal measurement as accurate as specified in the sensor specification; often reducing the quality of the sensor reading.
Excelera makes high-resolution conversion available to any sensor systems designer reducing time-to-market and development costs dramatically.
Based on novel patented methods Excelera products can measure frequency, period, pulse count, rpm rotation speed, frequency ratio, duty-cycle, frequency difference and phase-shift with a programmable accuracy of 1 to 0.0005%. The USTI can work in 29 measuring and one generating modes (UFDC in 16 measuring modes)
The error is constant across the whole input frequency from 0.05 Hz to 9 MHz or 144 MHz by using pre-scaling (7.5Mhz and 120MHz for UFDC-1).
The transducers have a serial, SPI and I²C interface and can be used in slave or master mode. In addition to measuring quasi-digital sensors the USTI can interface to resistive, including platinum (Pt), cuprum (Cu) resistors, thermistors (Ni), resistive bridges and capacitive sensing elements.
An extended temperature version USTI-EXT (-55 °C to + 150 °C) can be used directly in or near gearboxes, transfer cases, engines, turbochargers and exhaust systems.
Evaluation boards turned low-cost DAQ systems
The Evaluation Boards UFDC-1 and UFDC-1M-16 are available for 2 channel accurate frequency, rpm and other time-domain measurements. With this low cost evaluation boards it is possible to make high accuracy measurements equal to expensive bench top frequency meters. These boards have an RS-232 serial port for control of the UFDC. Simple commands are used to set resolution, conversion speed, modes and start/stop the measurement.
Applications
Temperature sensors, optical light to frequency sensors, quartz pressure transducers, Surface Acoustic Wave (SAW) sensors, strain-gauge to frequency converters, accelerometers, ABS brake systems, wheel speed sensor, turbine speed sensors, pressure sensors, fuel level sensors, mass air flow sensor, torque sensor, chemical, gas and biosensors
Please contact Excelera or MMS Electronics Ltd with your enquiries.
Excelera MMS Electronics Ltd
Tel +34.934137941 Tel: +44 (0)1943 877668
