MPXM2102AS datasheet(592/670 Pages) MOTOROLA

592 / 670 page

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Motorola Sensor Device Data

www.motorola.com/semiconductors

Symbols, Terms and Definitions

The following are the most commonly used letter symbols, terms and definitions associated with solid state silicon pressure

sensors.

Pburst

Burst Pressure

Themaximum pressure that can be applied to a transducer without rupture of either the sensing

element or transducer case.

supply current

The current drawn by the sensor from the voltage source.

Io+

output source current

The current sourcing capability of the pressure sensor.

kPa

kilopascals

Unit of pressure. 1 kPa = 0.145038 PSI.

—

Linearity

The maximum deviation of the output from a straight line relationship with pressure over the

operating pressure range, the type of straight line relationship (end point, least square

approximation, etc.) should be specified.

mm Hg

millimeters of mercury

Unit of pressure. 1 mmHg = 0.0193368 PSI.

Pmax

overpressure

The maximum specified pressure which may be applied to the sensing element without

causing a permanent change in the output characteristics.

POP

operating pressure range

The range of pressures between minimum and maximum temperature at which the output

will meet the specified operating characteristics.

—

Pressure Hysteresis

The difference in the output at any given pressure in the operating pressure range when

this pressure is approached from the minimum operating pressure and when approached

from the maximum operating pressure at room temperature.

PSI

pounds per square inch

Unit of pressure. 1 PSI = 6.89473 kPa.

—

Repeatability

The maximum change in output under fixed operating conditions over a specified period of

time.

input resistance

The resistance measured between the positive and negative input terminals at a specified

frequency with the output terminals open.

operating temperature

The temperature range over which the device may safely operate.

TCR

temperature coefficient

of resistance

The percent change in the DC input impedance per unit change in temperature relative to the

DC input impedance at a specified temperature (typically +25

°C).

TCVFSS

temperature coefficient

of full scale span

The percent change in full scale span per unit change in temperature relative to the full scale

span at a specified temperature (typically +25

°C).

TCVoff

temperature coefficient

of offset

The percent change in offset per unit change in temperature relative to the offset at a speci-

fied temperature (typically +25

°C).

Tstg

storage temperature

The temperature range at which the device, without any power applied, may be stored.

response time

The time required for the incremental change in the output to go from 10% to 90% of its

final value when subjected to a specified step change in pressure.

—

Temperature Hysteresis

The difference in output at any temperature in the operating temperature range when the

temperature is approached from the minimum operating temperature and when approached

from the maximum operating temperature with zero pressure applied.

VFSS

full scale span voltage

The change in output over the operating pressure range at a specified supply voltage.

Voff

offset voltage

The output with zero differential pressure applied for a specified supply voltage or current.

supply voltage dc

The dc excitation voltage applied to the sensor. For precise circuit operation, a regulated

supply should be used.

VS max

maximum supply voltage

The maximum supply voltage that may be applied to a circuit or connected to the sensor.

Zin

input impedance

The resistance measured between the positive and negative input terminals at a specified

frequency with the output terminals open. For Motorola X-ducer, this is a resistance measure-

ment only.

Zout

output impedance

The resistance measured between the positive and negative output terminals at a speci-

fied frequency with the input terminals open.

∆V/∆P

sensitivity

The change in output per unit change in pressure for a specified supply voltage.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

MPXM2102AS Datasheet(PDF) 592 Page - Motorola, Inc

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