MPX4080D datasheet(2/8 Pages) FREESCALE

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MPX4080D

Sensors

Freescale Semiconductor

Figure 1 shows a block diagram of the internal circuitry integrated on the pressure sensor chip.

Figure 1. Fully Integrated Pressure Sensor Schematic

Table 1. Maximum Ratings (1)

1. Exposure beyond the specified limits may cause permanent damage or degradation to the device.

Rating

Symbol

Value

Unit

Maximum Pressure

(P1 > P2)

(P2 > P1)

Pmax

400

kPa

Storage Temperature

Tstg

-40

° to +125°°C

Table 2. Operating Characteristics (VS = 5.1 Vdc, TA = 25×C unless otherwise noted, P1 > P2. Decoupling circuit shown in

Figure 4 required to meet electrical specifications.)

Characteristic

Symbol

Min

Typ

Max

Unit

Pressure Range(1)

1. 0kPa (kiloPascal) equals 0.145 psi.

POP

0—

kPa

Supply Voltage(2)

2. Device is ratiometric within this specified excitation range.

4.85

5.1

5.35

Vdc

Supply Current

—

7.0

mAdc

Minimum Pressure Offset(3)(0 to 85

°C)

@ VS = 5.1 V

3. Offset (Voff) is defined as the output voltage at the minimum rated pressure.

Voff

0.478

0.575

0.672

Vdc

Full Scale Output(4)(0 to 85

°C)

@ VS = 5.1 V

4. Full Scale Output (VFSO) is defined as the output voltage at the maximum or full rated pressure.

VFSO

4.772

4.900

5.020

Vdc

Full Scale Span(5)(0 to 85

°C)

@ VS = 5.1 V

5. Full Scale Span (VFSS) is defined as the algebraic difference between the output voltage at full rated pressure and the output voltage at the

minimum rated pressure.

VFSS

—

4.325

—

Vdc

Accuracy(6)

6. Accuracy (error budget) consists of the following:

• Linearity:

Output deviation from a straight line relationship with pressure over the specified pressure range.

• Temperature Hysteresis: Output deviation at any temperature within the operating temperature range, after the temperature is cycled to

and from the minimum or maximum operating temperature points, with zero differential pressure applied.

• Pressure Hysteresis:

Output deviation at any pressure within the specified range, when this pressure is cycled to and from minimum

or maximum rated pressure at 25

°C.

• TcSpan:

Output deviation over the temperature range of 0

° to 85°C, relative to 25°C.

• TcOffset:

Output deviation with minimum pressure applied, over the temperature range of 0

° to 85°C, relative to 25°C.

• Variation from Nominal: The variation from nominal values, for Offset or Full Scale Span, as a percent of VFSS at 25°C.

———

3.0

%VFSS

Sensitivity

V/P

—

mV/kPa

Sensing

Element

GND

Vout

Pins 4, 5, and 6 Are NO CONNECTS

Thin Film

Temperature

Compensation

and

Gain Stage #1

Gain Stage #2

and

Ground

Reference

Shift Circuitry

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