MPX2700 Просмотр технического описания (PDF) - Motorola => Freescale

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MPX2700

700 kRa High Pressure, Temperature Compensated & Calibrated Silicon Pressure Sensors

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

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The MPX2700 series device is a silicon piezoresistive pressure sensor providing a

highly accurate and linear voltage output — directly proportional to the applied pressure.

The sensor is a single monolithic silicon diaphragm with the strain gauge and a thin–film

resistor network integrated on–chip. The sensor is laser trimmed for precise span and

offset calibration and temperature compensation.

Features

• Unique Silicon Shear Stress Strain Gauge

• ± 0.5% Linearity

• Easy to Use Chip Carrier Package

• Basic Element, Single and Dual Ported Devices Available

• Available in Absolute, Differential and Gauge configurations

Application Examples

• Pump/Motor Controllers

• Pneumatic Control

• Tire Pressure Gauges

• Robotics

• Medical Diagnostics

• Pressure Switching

• Hydraulics

Figure 1 shows a block diagram of the internal circuitry on the stand–alone pressure

sensor chip.

VS

3

X–ducer

SENSING

ELEMENT

THIN FILM

TEMPERATURE

COMPENSATION

AND

CALIBRATION

CIRCUITRY

2 Vout+

4 Vout–

1

GND

Figure 1. Temperature Compensated Pressure Sensor Schematic

VOLTAGE OUTPUT versus APPLIED DIFFERENTIAL PRESSURE

The differential voltage output of the X–ducer is directly proportional to the differential

pressure applied.

The output voltage of the differential or gauge sensor increases with increasing

pressure applied to the pressure side (P1) relative to the vacuum side (P2). Similarly,

output voltage increases as increasing vacuum is applied to the vacuum side (P2)

relative to the pressure side (P1). This sensor is designed for applications where P1 is

always greater than, or equal to P2.

Senseon and X–ducer are trademarks of Motorola, Inc.

REV 2

©MMoottoororolal,aInSc.e1n9s97or Device Data

MSPEXR2I7E0S0

0 to 700 kPa (0 to 100 psi)

40 mV FULL SCALE SPAN

(TYPICAL)

BASIC CHIP

CARRIER ELEMENT

CASE 344–15, STYLE 1

DIFFERENTIAL

PORT OPTION

CASE 344C–01, STYLE 1

NOTE: Pin 1 is the notched pin.

PIN NUMBER

1

Gnd

3

VS

2

+Vout

4 –Vout

1

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