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Motorola Sensor Device Data

50 kPa Uncompensated

Silicon Pressure Sensors

The MPX53/MPXV53GC series silicon piezoresistive pressure sensors provide a very

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

standard, low cost, uncompensated sensors permit manufacturers to design and add

their own external temperature compensating and signal conditioning networks.

Compensation techniques are simplified because of the predictability of Motorola’s single

element strain gauge design.

Features

• Low Cost

• Patented Silicon Shear Stress Strain Gauge Design

• Ratiometric to Supply Voltage

• Easy to Use Chip Carrier Package Options

• 60 mV Span (Typ)

• Differential and Gauge Options

Application Examples

• Air Movement Control

• Environmental Control Systems

• Level Indicators

• Leak Detection

• Medical Instrumentation

• Industrial Controls

• Pneumatic Control Systems

• Robotics

Figure 1 shows a schematic of the internal circuitry

on the stand–alone pressure sensor chip.

VOLTAGE OUTPUT versus APPLIED DIFFERENTIAL PRESSURE

The differential voltage output of the sensor 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).

Replaces MPX50/D

Order this document

by MPX53/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MPX53D

CASE 344

MPX53GP

CASE 344B

MPX53

MPXV53GC

SERIES

0 to 50 kPa (0–7.25 psi)

60 mV FULL SCALE SPAN

(TYPICAL)

NOTE: Pin 1 is the notched pin.

PIN NUMBER

1

2

Gnd

3

4

SMALL OUTLINE

PACKAGE

MPXV53GC6U

CASE 482A

MPXV53GC7U

CASE 482C

PIN NUMBER

1

2

3

Gnd

5

6

7

N/C

N/C

N/C

8

N/C

UNIBODY PACKAGE

NOTE: Pin 1 is the notched pin.

MPX53DP

CASE 344C

Figure 1. Uncompensated Pressure Sensor Schematic

Sensor

GND

REV 2