BMD040-3MP Bosch Sensortec, BMD040-3MP Datasheet - Page 5

• Manufacturer Part Number: BMD040-3MP
• Description: ABS. PRESSURE SENSOR ANLG INDUST
• Manufacturer: Bosch Sensortec

Specifications of BMD040-3MP

• Pressure Type: Absolute
• Operating Pressure: 7.25 ~ 435.11 PSI, 50 ~ 3000 kPa
• Port Size: Male, 0.591" (1.5mm) Tube
• Output: ANALOG
• Voltage - Supply: 4.75 V ~ 5.25 V
• Termination Style: Surface Mount
• Operating Temperature: -30°C ~ 100°C
• Package / Case: TO-8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 828-1004

1.3
The pressure sensor supplies an analogue output signal, which is ratiometric to the supply
voltage. An RC low-pass filter with for instance τ = 2ms is recommended as an input circuitry for
the following electronics in order to suppress possibly disturbing harmonic vibrations.
The output voltage of the CLK PIN (to be measured using a high input impedance > 2MΩ, e.g.
buffer with subsequent filtering) is decreasing with increasing temperature.
Proper signal evaluation is performed by applying 10nF capacitors between VDD and GND and
between OUT and GND. Maximum total capacitive load on the OUT-pin must be below 25nF
(including the 10nF mentioned before).
1.4
The electric output of the sensor is designed in such a way, that failures in function by cable
breaks or short circuits can be detected by a suitable input circuitry of the following electronics.
For the signal range check the diagnosis ranges beyond the characteristic limits are provided.
Example of circuitry for detection of several kinds of failures by signal out of characteristic limits:
Rev. 1.3
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such
as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Specification is subject to change without notice. Document contains proprietary information and is not intended for publication.
Signal evaluation
Signal range check
Figure 1. Application note (example)
CLK
Page 5 - proprietary information
Data sheet
BMD040
Buffer & filter
Bosch Sensortec
23 October 2008