TM

Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

Freescale Pressure Sensors

Pressure Sensors Blood Pressure

Freescale Pressure Sensors

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

Blood Pressure Barometer/Altimeter Engine Control HVAC Applications Respiratory Applications Drug Delivery for Inhalers Consumer Appliance Industrial Equipment

What are Sensors?

A sensor is a device that detects either a real world condition, or a change in a physical quantity, and converts that change into a useful input signal for a decision making center.

Some examples of physical quantities that our sensors measure include temperature, pressure, flow rate, acceleration, vibration, tilt, and touch.

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

Data Processing, Control, and ConnectivitySensor Input

Actuatoror

Output

Diaphragm

Ion-implanted Strain

Signal Conditioning

Circuit

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

StrainGauge

Single Chip Integrated Silicon Pressure Sensor

Pressure Sensor Cross Section

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

DifferentialP1

P2

Gauge

P1

Types of Measurements

The bottom (P2) side is exposed to the atmosphere and P1 is where

The difference in pressure between two points is measured where pressure is applied to both sides of sensor.

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

Gauge

Absolute VacuumP1

P2 = ATM

the atmosphere and P1 is where pressure is applied.

Constraint Wafer

Pressure is applied to the top of the die while the bottom of the die is a vacuum sealed reference.

Barometer

Altimeter

Internal Tire Pressure

MAP/BAP

Each needs a pressure measurement that is compared to a fixed reference pressure (vacuum).

Sensor is in an enclosed environment with pressure medium

Each needs a measurement that compares the barometric pressure in its surroundings to the

measurement pressure.

Blood Pressure Monitor

Water Level

Exhaust Gas Recirculation

ABSOLU

TEG

AGE

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

measurement pressure.

In general, anything below 10 psi (70 kPa).Exhaust Gas Recirculation

Air Mattress

Each requires a comparison of the pressure between two ports

of the sensor.

Flow measurement

HVAC Applications

Air Flow

Filter Pressure

Pressure Drop

GAG

ED

IFFEREN

TIAL

VFS O

Span

S e n s it iv it y

Y = mX + B

Vout

Output Voltage

Understand our Data Sheet

Offset Sensor output at zero pressure

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

Full Scale Pressure

Vo f f

S e n s it iv it y

Zero Pressure

Pressure

Span Sensor output at full scale pressure minus the offset

Sensitivity - Slope of the line (m), mV/kPa

Temperaturecompensation

Amplification

Amplification

MCU

MCU

Output

OutputMPX10DP

UN-COMPENSATED

Pressure Sensor Levels of IntegrationPressure Sensor Levels of IntegrationPRODUCT OFFERINGS

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

MPXV5004GINTEGRATED PRESSURE SENSOR (IPS)

MPXM2010GSCOMPENSATED MCU Output

Level of Integration

Temperaturecompensation

Amplification

Amplification

MCU

MCU

Output

OutputMPX10DP

UN-COMPENSATED

Pressure Sensor Levels of IntegrationPressure Sensor Levels of Integration

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

MPXV5004GINTEGRATED PRESSURE SENSOR (IPS)

MPXM2010GSCOMPENSATED MCU Output

Uncompensated:

Temperature Compensated& Calibrated:

Design Advantages Design Considerations

High sensitivity Lowest cost Provides positive and negative

pressure measurement

Device to device variation Temp-compensation circuitry required Amplification circuitry required

Minimal device to devicevariations (interchangeability)

Temperature compensationincluded on chip.

Lowest sensitivity than due tocompensation features

Priced higher than uncomp

PRODUCT OFFERINGS

AUTO ZERO +

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

Integrated:

included on chip. Provides positive and negative

pressure measurement

PLUG N PLAY Connect directly to MCU Amplified, calibrated for

span & offset. (Interchangeability) Temperature compensation

included on-chip

Priced higher than uncomp Amplification circuitry required

Priced higher than uncomp & compdevices.

Lower piece part count

AUTO ZERO +

AUTO ZERO +

MPAK

MPAK Axial Port

SuperSmall

OutlinePackage(SSOP) Case

423A

Package Options

Case1317

Tire Pressure Monitor

Axial Port

MedicalChip Pak

Unibody

BASIC ELEMENT

GAUGE PORT

DualPort

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.

Case482

Vacuum Port

SmallOutline

Package(SOP) Side

PortDualPort

ThroughHole

Axial PortThrough

Hole 482BAxial Port

ThroughHole

Axial Port

ThroughHole

Axial Port

Freescale Pressure sensor

MAP/BAP (Manifold/Barometric Absolute Pressure)

Placement in end product: engines, 2-stroke scooters.

Modules produced by Customer

TMFreescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2006.