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3–135
Motorola Sensor Device Data
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The Motorola MPXAZ4100A series Manifold Absolute Pressure (MAP) sensor for
engine control is designed to sense absolute air pressure within the intake manifold.
This measurement can be used to compute the amount of fuel required for each
cylinder. The small form factor and high reliability of on–chip integration makes the
Motorola MAP sensor a logical and economical choice for automotive system
designers.
The MPXAZ4100A series piezoresistive transducer is a state–of–the–art, monolithic,
signal conditioned, silicon pressure sensor. This sensor combines advanced
micromachining techniques, thin film metallization, and bipolar semiconductor
processing to provide an accurate, high level analog output signal that is proportional to
applied pressure.
Figure 1 shows a block diagram of the internal circuitry integrated on a pressure
sensor chip.
Features
Resistant to high humidity and common automotive media
1.8% Maximum Error Over 0
°
to 85
°
C
Specifically Designed for Intake Manifold Absolute
Pressure Sensing in Engine Control Systems
Ideally Suited for Microprocessor or Microcontroller Based Systems
Temperature Compensated Over –40
°
C to +125
°
C
Durable Thermoplastic (PPS) Surface Mount Package
Application Examples
Manifold Sensing for Automotive Systems
Also Ideal for Non–Automotive Applications
Figure 1. Fully Integrated Pressure Sensor Schematic
VS
SENSING
ELEMENT
Vout
GND
THIN FILM
TEMPERATURE
COMPENSATION
AND
GAIN STAGE #1
GAIN STAGE #2
AND
GROUND
REFERENCE
SHIFT CIRCUITRY
PINS 1, 5, 6, 7 AND 8 ARE NO CONNECTS
FOR SMALL OUTLINE PACKAGE DEVICE
SEMICONDUCTOR TECHNICAL DATA
5
6
7
8
Gnd
Vout
4
1
2
3
INTEGRATED
PRESSURE SENSOR
20 to 105 kPa (2.9 to 15.2 psi)
0.3 to 4.9 V Output
PIN NUMBER
N/C
VS
N/C
N/C
N/C
N/C
NOTE: Pins 1, 5, 6, 7, and 8 are not
device connections. Do not connect to
external circuitry or ground. Pin 1 is
noted by the notch in the lead.
MPXAZ4100AC6U
CASE 482A
SMALL OUTLINE PACKAGE
MPXAZ4100A6U
CASE 482
Rev 0
F
Freescale Semiconductor, Inc.
n
.