MPXH6250A6T1 datasheet(4/12 Pages) FREESCALE

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Pressure

MPXH6250A

Sensors

Freescale Semiconductor, Inc.

On-chip Temperature Compensation and Calibration

Figure 2 illustrates the absolute sensing chip in the basic

Super Small Outline chip carrier (Case 1317). Figure 3

illustrates a typical application circuit (output source current

operation).

Figure 4 shows the sensor output signal relative to

pressure input. Typical minimum and maximum output

curves are shown for operation over 0 to 85

C temperature

range. The output will saturate outside of the rated 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 silicon diaphragm. The MPXH6250A

series pressure sensor operating characteristics, 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. Cross Sectional Diagram SSOP

(not to scale)

Figure 3. Typical Application Circuit

(Output Source Current Operation)

Figure 4. Output vs. Absolute Pressure

Fluorosilicone

Gel Die Coat

Wire Bond

Lead Frame

Sealed Vacuum Reference

Absolute Element

Die Bond

Stainless Steel Cap

Thermoplastic Case

Die

VS Pin 2

+5.1 V

GND Pin 3

VOUT Pin 4

MPXH6250A

To ADC

100 nF

51 K

47 pF

Pressure (Reference to Sealed Vacuum) in kPa

4.5

4.0

5.0

1.0

1.5

2.0

2.5

3.0

3.5

0.5

Transfer Function:

Vout = Vs*(0.0040*P-0.040) ± Error

VS = 5.1 Vdc

Temperature = 0 to 85°C

MIN

MAX

TYP

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