The new MPX7100 series pressure sensor incorporates all the innovative features ofMotorola’s MPX2000 series family including the patented, single piezoresistive straingauge (X–ducer) and on–chip temperature compensation and calibration. In addition, theMPX7100 series has a high input impedance of typically 10 kW for those portable, lowpower and battery–operated applications. This device is suitable for those systems inwhich users must have a dependable, accurate pressure sensor that will not consumesignificant power. The MPX7100 series device is a logical and economical choice forapplications such as portable medical instrumentation, remote sensing systems with4–20 mAmp transmission and field barometers/altimeters.Features• Temperature Compensated Over 0°C to +85°C• Unique Silicon Shear Stress Strain Gauge• Easy to Use Chip Carrier Package Options• Available in Differential and Gauge Configurations• Ratiometric to Supply Voltage• ±0.25% Linearity (MPX7100D)Application Examples• Portable Medical Instrumentation• Field Altimeters• Field Barometers Figure 1 illustrates a schematic of the internal circuitry on the stand–alone pressure sensor chip.
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