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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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MPX4105 Integrated Silicon Pressure Sensor Manifold Absolute Pressure Sensor On-Chip Signal Conditioned, Temperature Compensated and Calibrated
The Motorola MPX4105 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 MPX4105 series piezoresistive transducer is a state–of–the–art, monolithic, signal conditioned silicon pressure sensor. This sensor with its patented transducer, 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 • 1.7% 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 • Durable Epoxy Unibody Element • Ideal for Non–Automotive Applications • Consult Factory for Top Piston Fit Package Availability Application Examples • Manifold Sensing for Automotive Systems
VS 3
SERIES
OPERATING OVERVIEW INTEGRATED PRESSURE SENSOR 15 to 105 kPa (2.18 to 15.2 psi) 0.31 to 4.90 Volts Output
BASIC CHIP CARRIER ELEMENT CASE 867–08, STYLE 1 NOTE: Pin 1 is the notched pin.
PIN NUMBER
1 2 3 Vout Gnd VS 4 5 6 N/C N/C N/C
NOTE: Pins 4, 5, and 6 are internal device connections. Do not connect to external circuitry or ground.
X–ducer SENSING ELEMENT
THIN FILM TEMPERATURE COMPENSATION AND GAIN STAGE #1 2 GND
GAIN STAGE #2 AND GROUND REFERENCE SHIFT CIRCUITRY
1
Vout
PINS 4, 5 AND 6 ARE NO CONNECTS
Figure 1. Fully Integrated Pressure Sensor Schematic
Senseon and X–ducer are trademarks of Motorola, Inc.
Motorola Sensor Device Data © Motorola, Inc. 1997
1
MPX4105 SERIES
MAXIMUM RATINGS(1)
Parametrics Overpressure(2) (P1 > P2) Burst Pressure(2) (P1 > P2) Storage Temperature Operating Temperature Symbol Pmax Pburst Tstg TA Value 400 1000 – 40° to +125° – 40° to +125° Unit kPa kPa °C °C
1. TC = 25°C unless otherwise noted. 2. Exposure beyond the specified limits may cause permanent damage or degradation to the device.
OPERATING CHARACTERISTICS (VS = 5.1 Vdc, TA = 25°C unless otherwise noted, P1
Characteristic Pressure Range(1) Supply Voltage(2) Supply Current Minimum Pressure Offset(3) @ VS = 5.1 Volts Full Scale Output(4) @ VS = 5.1 Volts Full Scale Span(5) @ VS = 5.1 Volts Accuracy(6) Sensitivity Response Time(7) Output Source Current at Full Scale Output Warm–up Time(8) Offset S.