MPXV5004DP is a Pressure Sensor belonging to the MPxx5004 series introduced by Freescale Semiconductors. It is a monolithic silicon pressure sensor specially designed for microcontroller units with integrated analog to digital converters. A sensitive, piezoresistive pressure sensor combines a strain gauge to convert pressure to electric resistance. The sensor comes with internal temperature compensation and auto-calibration circuitry. The chip also uses fluorosilicone gel to isolate and transmit signals to the silicon diaphragm.
MPXV5004DP Differential and Gauge, Integrated Pressure Sensor
MPXV5004DP avails modern micromachining techniques, thin-film metallization, and bipolar processing to provide accurate results. It works by producing an output voltage signal proportional to the pressure applied to the sensor in the range of 0 to 3.92 kPa. MPXV5004DP has vast applications ranging from domestic to industrial level for water level sensing and pressure measurement.
The following diagram shows the pinout of the MPXV5004DP Pressure Sensor:
Let us discuss the pinout of the MPXV5004DP Pressure Sensor. The pin configuration detail in tabular is mentioned below:
|Pin Number||Pin Name||Function|
|1||DNC||Do Not Connect to circuit pin/Ground pin|
|2||VS||Power Supply pin|
|3||GND||Reference potential pin|
|4||VOUT||Output Voltage pin|
|5||DNC||Do Not Connect to circuit pin/Ground pin|
|6||DNC||Do Not Connect to circuit pin/Ground pin|
|7||DNC||Do Not Connect to circuit pin/Ground pin|
|8||DNC||Do Not Connect to circuit pin/Ground pin|
Features and Specifications
- Operating Voltage: 4.75 – 5.25 Volts
- Maximum Supply Current: 10 mA
- Maximum Pressure: 16 kPa
- Operational Temperature: 0 – 850C
- Offset Voltage: 0.75 – 1.25 Volts
- Total Pressure Range: 0 – 3.92 kPa
- Sensitivity: 1 V/kPa
Error and Temperature Compenstation
- 1.5% maximum error for 0 to 100 mm H2O over +10 °C to +60 °C with autozero
- 2.5% maximum error for 100 to 400 mm H2O over +10 °C to +60 °C with autozero
- 6.25% maximum error for 0 to 400 mm H2O over 10 °C to +60 °C without autozero
- It has a temperature compensation of over 10 °C to 60 °C to reduce fluctuations and achieve accuracy.
- It has a small outline surface mount package
- The package is made of thermoplastic to sustain high impacts
Interfacing MPXV5004DP Pressure Sensor with MCU
To interface a pressure sensor to a microcontroller unit, the microcontroller should have an integrated analog to digital Converter. Otherwise, we must use an external ADC to make them compatible. Supply power to the sensor as well the MCU through supply pins. Connect an analog pin of the microcontroller unit to the Output Voltage pin of the sensor. Besides, one must use decoupling capacitors to minimize voltage spikes in input/output signals. An interfacing diagram for the visual understanding is shown below:
Working of MPXV5004DP with MCU
After interfacing the MPXV5004DP Pressure Sensor with the MCU let say Arduino as shown in the previous section, power up the Arduino so that it can energize the sensor as well. The sensor will measure the analog air pressure or water pressure at that time and generate a proportional output voltage signal. If you don’t know how to read analog signals with Arduino, you can read this post:
The output voltage signal is carried through the input analog pin of the Arduino to the Arduino IC, gets digitized with the help of ADCs, and shows the results on the Serial monitor.
MPXV5004DP Alternative Options
- Liquid level measuring Systems
- Pressure measuring Systems
- Washing Machines
- Automotive Applications
- Respiratory Medical Systems
- Industrial Applications
- Suited Embedded Systems
The following figure shows the 2d model of MPXV5004DP Pressure Sensor IC. The following figure depicts the 2d model of Case 98ASA99255D, small outline, surface mount package. It shows us the physical dimensions required when a PCB card is designed.
The datasheet link is given below to see further details and specifications of the MPXV5004DP Pressure Sensor.