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HV110-SM02-R Datasheet(PDF) 6 Page - Superior Sensors Technology. |
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HV110-SM02-R Datasheet(HTML) 6 Page - Superior Sensors Technology. |
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6 / 17 page ![]() HV Series Differential Low Pressure Sensors www.SuperiorSensors.com 6 DS‐0001G.DOCX 8.2 Material Compliance Parameter Sym HV110 / HV120 /HV160/ HV210 Units Notes RoHS REGRoHS RoHS Compliant REACH REGREAC REACH Compliant 9 System Overview The HV Series pressure sensor is a fully integrated pressure acquisition system in a sensor module. The acquisition system includes anti‐alias filters, data acquisition, 50/60Hz notch filter, sensor compensation, bandwidth limiting and I/O functions. Refer to the figure below for the HV Series block diagram. Pressure Sensor Δ‐Sigma Modulator Δ‐Sigma Modulator SAR ADC SAR ADC Decimation 4 50/60Hz Notch (Sinc 2) 4 26 Term Compensation Coefficients 4 SPI/I 2C Interface Va T o Vs MCU DAV nRST Rate Control User Control Registers Mode Control 1b Enable 3b BW Control 3b Range Control BW Limit IIR (2 nd Order) Compensation FPU with Linearization Anti‐Alias Filter Rate Controller HW Interface Anti‐Alias Filter MISO/SDA MOSI/SCL SCK nSS There are also two user controlled registers that tune the sensor to the specific user requirements. The first register is the Mode Control register that determines the output pressure range, the corner frequency of the bandwidth limiting filter and enables or disables the 50/60Hz notch filter. The second register is the Rate Control register which controls the rate at which the Data Available (DAV) pin is asserted. The internal sensor data update rate is 111 Hz. This is generally much faster than the requirements of an HVAC transmitter so the Rate Control register will throttle down the rate at which the Data Available pin (DAV) is asserted. The DAV is reset upon each read of the pressure sensor. An internal model of the Rate Controller is illustrated in the figure to the right. Rate Counter Rate Control Register S R Q Overflow Reload Value Internal Update (111Hz Rate) Data Read DAV |
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