MPXM2102AS datasheet(270/670 Pages) MOTOROLA

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MPX5700 SERIES

3–124

Motorola Sensor Device Data

www.motorola.com/semiconductors

ON–CHIP TEMPERATURE COMPENSATION, CALIBRATION AND SIGNAL CONDITIONING

Figure 3 illustrates the Differential/Gauge basic chip car-

rier (Case 867). A fluorosilicone gel isolates the die surface

and wire bonds from the environment, while allowing the

pressure signal to be transmitted to the sensor diaphragm.

(For use of the MPX5700D in a high pressure, cyclic ap-

plication, consult the factory.)

The MPX5700 series pressure sensor operating character-

istics, and internal reliability and qualification tests are based

on use of dry air as the pressure media. Media, other than dry

air, may have adverse effects on sensor performance and

long–term reliability.

Contact the factory for information

regarding media compatibility in your application.

Figure 2 shows the sensor output signal relative to pres-

sure input. Typical, minimum, and maximum output curves

are shown for operation over a temperature range of 0

° to

°C using the decoupling circuit shown in Figure 4. The

output will saturate outside of the specified pressure range.

Figure 4 shows the recommended decoupling circuit for

interfacing the output of the integrated sensor to the A/D in-

put of a microprocessor or microcontroller. Proper decoup-

ling of the power supply is recommended.

DIFFERENTIAL PRESSURE (kPa)

Figure 2. Output versus Pressure Differential

5.0

4.0

3.0

2.0

700

300

500

4.5

3.5

2.5

1.5

100

1.0

0.5

600

200

800

400

TYPICAL

TRANSFER FUNCTION:

Vout = VS*(0.0012858*P+0.04) ± ERROR

VS = 5.0 Vdc

TEMP = 0 to 85

°C

MAX

MIN

FLUORO SILICONE

DIE COAT

LEAD

FRAME

STAINLESS STEEL

METAL COVER

RTV DIE

BOND

DIE

EPOXY CASE

WIRE BOND

Figure 3. Cross–Sectional Diagram

(Not to Scale)

Figure 4. Recommended power supply decoupling

and output filtering.

For additional output filtering, please refer to

Application Note AN1646.

1.0

IPS

470 pF

OUTPUT

+5 V

0.01

GND

Vout

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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