1
Motorola, Inc. 1997
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The Motorola MPXT4100A/4101A/4105A 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.
Features
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 Interfacing
Patented Silicon Shear Stress Strain Gauge
Temperature Compensated Over –40
°
C to +125
°
C
Surface Mount Package
Ideal for Non–Automotive Applications
Also Available in Unibody Package
Application Examples
Manifold Sensing for Automotive Systems
MAXIMUM RATINGS
(TC = 25
°
C unless otherwise noted)
Rating
Overpressure(1) (P1 > P2)
Burst Pressure(1) (P1 > P2)
Symbol
Value
Unit
Pmax
Pburst
Tstg
TA
400
kPa
1000
kPa
Storage Temperature
–40 to +125
°
C
Operating Temperature
–40 to +125
°
C
Figure 1. Fully Integrated Pressure Sensor Schematic
VS
3
X–ducer
SENSING
ELEMENT
1
Vout
2
GND
THIN FILM
TEMPERATURE
COMPENSATION
AND
GAIN STAGE #1
GAIN STAGE #2
AND
GROUND
REFERENCE
SHIFT CIRCUITRY
PINS 5, 6, 7 AND 8 ARE NO CONNECTS
The MPXT4100A/4101A/4105A series piezoresistive
transducer is a state–of–the–art, monolithic, signal con-
ditioned, silicon pressure sensor. This sensor, with its pat-
ented transducer, combines advanced micromachining
techniques, thin film metallization, and bipolar semicon-
ductor 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.
Senseon and X–ducer are trademarks of Motorola, Inc.
Order this document
by MPXT4100/D
SEMICONDUCTOR TECHNICAL DATA
4100A: 20–105 kPa
4101A: 15–102 kPa
4105A: 15–105 kPa
X–ducer
SILICON
PRESSURE SENSORS
PIN NUMBER
NOTE: Pins 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.
BASIC ELEMENT
CASE 473A–01, STYLE 2
1
2
3
Gnd
+Vout
VS
Vout
5
6
7
8
N/C
N/C
N/C
4
N/C