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Motorola Sensor Device Data

100 kPa

On-Chip Temperature

Compensated & Calibrated

Silicon Pressure Sensors

The MPX2100 series device is a silicon piezoresistive pressure sensor providing a

highly accurate and linear voltage output — directly proportional to the applied pressure.

The sensor is a single, monolithic silicon diaphragm with the strain gauge and a thin–film

resistor network integrated on–chip. The chip is laser trimmed for precise span and offset

calibration and temperature compensation.

Features

• Temperature Compensated Over 0°C to +85°C

• Easy–to–Use Chip Carrier Package Options

• Available in Absolute, Differential and Gauge Configurations

• Ratiometric to Supply Voltage

•±0.25% Linearity (MPX2100D)

Application Examples

• Pump/Motor Controllers

• Robotics

• Level Indicators

• Medical Diagnostics

• Pressure Switching

• Barometers

• Altimeters

Figure 1 illustrates a block diagram of the internal circuitry on the stand–alone

pressure sensor chip.

Figure 1. Temperature Compensated Pressure Sensor Schematic

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SENSING

ELEMENT

THIN FILM

TEMPERATURE

COMPENSATION

AND

CALIBRATION

CIRCUITRY

2

4

1

GND

VOLTAGE OUTPUT versus APPLIED DIFFERENTIAL PRESSURE

The differential voltage output of the sensor 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.

Order this document

by MPX2100/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MPX2100

SERIES

0 to 100 kPa (0 to 14.5 psi)

40 mV FULL SCALE SPAN

(TYPICAL)

UNIBODY PACKAGE

MPX2100AP/GP

CASE 344B

MPX2100ASX/GSX

CASE 344F

MPX2100A/D

CASE 344

MPX2100DP

CASE 344C

PIN NUMBER

1

2

Gnd

3

4

NOTE: Pin 1 is noted by the notch in

the lead.

REV 9

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005