MPX100 Просмотр технического описания (PDF) - Motorola => Freescale

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MPX100

100 kPa Uncompensated Silicon Pressure Sensors

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Order this document

by MPX100/D

100 kPa

Uncompensated

Silicon Pressure Sensors

The MPX100 series device is a silicon piezoresistive pressure sensor providing a very

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

standard, low cost, uncompensated sensor permits manufacturers to design and add

their own external temperature compensating and signal conditioning networks.

Compensation techniques are simplified because of the predictability of Motorola’s single

element strain gauge design.

Features

• Low Cost

• Patented, Silicon Shear Stress Strain Gauge Design

• Easy to Use Chip Carrier Package Options

• Ratiometric to Supply Voltage

• 60 mV Span (Typ)

• Absolute, Differential and Gauge Options

• ± 0.25% Linearity (Max)

Application Examples

• Pump/Motor Controllers

• Robotics

• Level Indicators

• Medical Diagnostics

• Pressure Switching

• Barometers

• Altimeters

Figure 1 illustrates a schematic of the internal circuitry on the stand–alone pressure

sensor chip.

PIN 3 + VS

X–ducer

PIN 2

+ Vout

PIN 4

– Vout

PIN 1

Figure 1. Uncompensated Pressure Sensor Schematic

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.

X–ducer is a trademark of Motorola, Inc.

REV 6

© MMotootroolrao, lIanc.S1e9n98sor Device Data

MPX100

SERIES

0 to 100 kPa (0 – 14.5 psi)

60 mV FULL SCALE SPAN

(TYPICAL)

BASIC CHIP

CARRIER ELEMENT

CASE 344–15, STYLE 1

DIFFERENTIAL

PORT OPTION

CASE 344C–01, STYLE 1

NOTE: Pin 1 is the notched pin.

PIN NUMBER

1

Gnd

3

VS

2

+Vout

4 –Vout

1

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