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MPXV2202DP 数据表(PDF) 503 Page - Motorola, Inc |
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MPXV2202DP 数据表(HTML) 503 Page - Motorola, Inc |
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503 / 670 page  AN1571 3–357 Motorola Sensor Device Data www.motorola.com/semiconductors The oscillation signal varies from person to person. In general, it varies from less than 1 mmHg to 3 mmHg. From the transfer function of MPXV5050GP, this will translate to a voltage output of 12 mV to 36 mV signal. Since the filter gives an attenuation of 10 dB to the 1 Hz signal, the oscillation signal becomes 3.8 mV to 11.4 mV respectively. Experiments indicate that, the amplification factor of the amplifier is chosen to be 150 so that the amplified oscillation signal is within the output limit of the amplifier (5 mV to 3.5 V). Figure 3(a) shows the output from the pressure sensor and Figure 3(b) shows the extracted oscillation signal at the output of the amplifier. Figure 3. CP signal at the output of the pressure sensor Oscillation signal is extracted here 3 2.5 2 1.5 1 0.5 0 0 5 10 15 20 25 30 35 40 Time (seconds) 3 2.5 2 1.5 1 0.5 0 10 15 20 25 30 35 Time (seconds) MAP DBP SBP 3.5 Figure 3b. Extracted oscillation signal at the output of amplifier Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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