MPXM2102AS datasheet(568/670 Pages) MOTOROLA

568 / 670 page

AN4010

3–422

Motorola Sensor Device Data

www.motorola.com/semiconductors

Figure 6 illustrates the particular layout chosen for the

evaluation board (LED and R12 are not shown). This layout

can serve as a fully functional stand–alone board or can be the

basis for integration into a system level layout. Through hole

mounted components have been selected, and this dictates

the particular footprint dimensions. However, with surface

mount components, this layout can be made significantly

smaller.

Component Side

Figure 6a. Board Layout

Figure 6b. Board Layout

Back Side

EVALUATION NOTES:

This board is designed to run from a regulated power source

or from batteries. Since the pressure sensors are ratio–metric

(meaning that the output scales with the applied supply

voltage), supply voltages ranging from 3V to 10V can be used.

The specified op-amp operates well within these values.

In terms of sensor packages, four variations are

recommended.

They are the MPX2010D, MPX201DP,

MPX2010GP and the MPXC2011DT1. Either of these sensors

can be directly mounted on the board itself or can be remotely

mounted and connected to it via wires. The customer can

select the proper package depending on size requirements

and on whether gauge, vacuum or differential pressure will be

sensed.

In particular, the MPXC2011DT1, known as the

ChipPak sensor, is a very small package and can be used to

sense differential and vacuum pressure provided that ports

are attached on each side as shown in Figure 1. Note that

Motorola does not provide these ports as standard products.

Since the output signal of the evaluation board can be fined

tuned to be a very measurable voltage, interfacing the board

to an A/D, microprocessor, or other circuitry is very

straightforward.

CONCLUSION

The low-pressure evaluation board provides design

flexibility in terms of amplification, output type and packaging.

Gains ranging from 50 up to 1500 can be easily implemented

by simply soldering specific resistors and manipulating a few

jumpers. Jumpers also control the type of output and allow the

user to select analog or switching signals. Two sets of through

hole sensor connections are provided for various pressure

sensor packages, and customers are free to remotely mount

the board via wires.

In many applications, such as HVAC systems or medical

respiratory equipment, quick and effective component

evaluation is critical. The flexible features of this board allow

a customer to reduce development time.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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