MPXM2102AS datasheet(232/670 Pages) MOTOROLA

232 / 670 page

MPX4200A SERIES

3–86

Motorola Sensor Device Data

www.motorola.com/semiconductors

Figure 2. Cross–Sectional Diagram

(Not to Scale)

SILICONE

DIE COAT

WIRE BOND

STAINLESS STEEL

METAL COVER

RTV DIE

BOND

DIE

EPOXY

CASE

LEAD FRAME

SEALED VACUUM REFERENCE

1.0

IPS

470 pF

OUTPUT

+5 V

0.01

GND

Vout

Figure 3. Recommended power supply decoupling

and output filtering.

For additional output filtering, please refer to

Application Note AN1646.

Figure 2 illustrates the absolute sensing chip in the basic

chip carrier (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 sen-

sor diaphragm. The MPX4200A series pressure sensor

operating characteristics, and internal reliability and quali-

fication tests are based on use of dry air as the pressure

media. Media, other than dry air, may have adverse ef-

fects on sensor performance and long–term reliability.

Contact the factory for information regarding media com-

patibility in your application.

Figure 3 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.

Figure 4 shows the sensor output signal relative to pres-

sure input. Typical minimum and maximum output curves

are shown for operation over temperature range of 0

° to

°C. The output will saturate outside of the specified pres-

sure range.

5.0

4.5

4.0

3.5

3.0

MAX

MIN

2.5

2.0

1.5

1.0

0.5

Figure 4. Output versus Absolute Pressure

TYP

TRANSFER FUNCTION:

Vout = VS* (0.005 x P–0.04) ± Error

VS = 5.1 Vdc

TEMP = 0 to 85

°C

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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