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MPX7100GVS Datasheet(PDF) 1 Page - Motorola, Inc |
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MPX7100GVS Datasheet(HTML) 1 Page - Motorola, Inc |
1 / 10 page 1 Motorola Sensor Device Data 100 kPa High Zin, On-Chip Temperature Compensated & Calibrated Silicon Pressure Sensors The new MPX7100 series pressure sensor incorporates all the innovative features of Motorola’s MPX2000 series family including the patented, single piezoresistive strain gauge (X–ducer) and on–chip temperature compensation and calibration. In addition, the MPX7100 series has a high input impedance of typically 10 k Ω for those portable, low power and battery–operated applications. This device is suitable for those systems in which users must have a dependable, accurate pressure sensor that will not consume significant power. The MPX7100 series device is a logical and economical choice for applications such as portable medical instrumentation, remote sensing systems with 4 – 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. Figure 1. Temperature Compensated Pressure Sensor Schematic VS 3 HIGH Zin X–ducer SENSING ELEMENT THIN FILM TEMPERATURE COMPENSATION AND CALIBRATION CIRCUITRY 2 4 Vout+ Vout– 1 GND VOLTAGE OUTPUT versus APPLIED DIFFERENTIAL PRESSURE The differential voltage output of the X–ducer is directly proportional to the differential pressure applied. The absolute sensor has a built–in reference vacuum. The output voltage will decrease as vacuum, relative to ambient, is drawn on the pressure (P1) side. The output voltage of the differential or gauge sensor increases with increasing pressure applied to the pressure (P1) side relative to the vacuum (P2) side. Similarly, output voltage increases as increasing vacuum is applied to the vacuum (P2) side relative to the pressure (P1) side. Preferred devices are Motorola recommended choices for future use and best overall value. Senseon and X–ducer are trademarks of Motorola, Inc. Order this document by MPX7100/D MOTOROLA SEMICONDUCTOR TECHNICAL DATA © Motorola, Inc. 1997 BASIC CHIP CARRIER ELEMENT CASE 344–15, STYLE 1 DIFFERENTIAL PORT OPTION CASE 344C–01, STYLE 1 MPX7100 SERIES 0 to 100 kPa (0 to 14.5 psi) 40 mV FULL SCALE SPAN (TYPICAL) NOTE: Pin 1 is the notched pin. PIN NUMBER 1 2 Gnd +Vout 3 4 VS –Vout Motorola Preferred Device REV 3 |
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