connections. Do not connect to external
circuitry or ground.
The MPX4105A series piezoresistive transducer is a state鈥?/div>
of鈥搕he鈥揳rt, monolithic, signal conditioned, silicon pressure
sensor. This sensor, with its patented X鈥揹ucer, 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. A vacuum is sealed behind the sensor diaphragm
providing a reliable pressure reference.
Figure 1 shows a block diagram of the internal circuitry
integrated on the stand鈥揳lone pressure sensing chip.
X鈥揹ucer
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
X鈥揹ucer is a trademark of Motorola, Inc.
Preferred
devices are Motorola recommended choices for future use and best overall value.
漏
Motorola Sensor Device Data
Motorola, Inc. 1996
1