MPX4101A

Sensors

4

Freescale Semiconductor

ON-CHIP TEMPERATURE COMPENSATION AND CALIBRATION

Figure 2 illustrates an absolute sensing chip in the super

small outline package (Case 1317).

Figure 4 shows the sensor output signal relative to

pressure input. Typical, minimum, and maximum output

curves are shown for operation over a temperature range of

0° to 85°C. The output will saturate outside of the specified

pressure range.

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. The MPX4101A/

MPXA4101A/MPXH6101A series pressure sensor operating

characteristics, 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.

interfacing the output of the integrated sensor to the A/D input

of a microprocessor or microcontroller. Proper decoupling of

the power supply is recommended.

Figure 2. Cross Sectional Diagram SSOP (not to scale)

Figure 3. Recommended Power Supply Decoupling and

Output Filtering

Figure 4. Output versus Absolute Pressure

Fluoro Silicone

Gel Die Coat

Die

Stainless

Steel Cap

Thermoplastic Case

Wire Bond

Lead Frame

Absolute Element

Die Bond

Sealed Vacuum Reference

P1

+5.1 V

GND Pin 3

to ADC

100 nF

51 K

47 pF

MPXH6101A

5.0

3.5

4.0

4.5

3.0

2.5

2.0

1.5

1.0

0.5

0

TYP

MAX

MIN

Pressure (ref: to sealed vacuum) in kPa

Transfer Function:

Temperature = 0 to 85°C

20 kPa to 105 kPa

MPX4101A