3–64
Motorola Sensor Device Data
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The Motorola MPX4100A/MPXA4100A 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 MPX4100A/MPXA4100A 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
1.8% Maximum Error Over 0
°
to 85
°
C
Specifically Designed for Intake Manifold Absolute
Pressure Sensing in Engine Control Systems
Temperature Compensated Over –40
°
C to +125
°
C
Durable Epoxy Unibody Element or Thermoplastic
(PPS) Surface Mount Package
Application Examples
Manifold Sensing for Automotive Systems
Ideally suited for Microprocessor or Microcontroller–
Based Systems
Also Ideal for Non–Automotive Applications
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
PINS 4, 5 AND 6 ARE NO CONNECTS FOR
UNIBODY DEVICE
Figure 1. Fully Integrated Pressure Sensor
Schematic
SEMICONDUCTOR TECHNICAL DATA
INTEGRATED
PRESSURE SENSOR
15 to 115 kPa (2.2 to 16.7 psi)
0.2 to 4.8 Volts Output
PIN NUMBER
NOTE: Pins 4, 5, and 6 are internal
device connections. Do not connect
to external circuitry or ground. Pin 1
is noted by the notch in the lead.
MPX4100A
CASE 867
MPX4100AP
CASE 867B
1
2
3
Vout
Gnd
VS
4
5
6
N/C
N/C
N/C
UNIBODY PACKAGE
PIN NUMBER
NOTE: Pins 1, 5, 6, 7, and 8 are
internal device connections. Do not
connect to external circuitry or
ground. Pin 1 is noted by the notch in
the lead.
1
2
3
N/C
VS
Gnd
5
6
7
N/C
N/C
N/C
MPXA4100A6U
CASE 482
MPXA4100AC6U
CASE 482A
4
Vout
8
N/C
SMALL OUTLINE PACKAGE
MPX4100AS
CASE 867E
REV 5
F
Freescale Semiconductor, Inc.
n
.