Overview
The MPX4250A, produced by NXP USA Inc., is a state-of-the-art monolithic silicon pressure sensor designed for manifold absolute pressure (MAP) sensing in engine control systems. This sensor is specifically tailored for automotive applications, particularly for turbo boost engine control, and is also suitable for non-automotive uses. It combines advanced micromachining techniques, thin-film metallization, and bipolar processing to provide an accurate, high-level analog output signal proportional to the applied pressure. The sensor's small form factor and high reliability make it a logical and economical choice for system engineers.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Pressure Range | 20 | 250 | kPa | |
| Supply Voltage (VCC) | 4.85 | 5.1 | 5.35 | Vdc |
| Supply Current (Io) | 7.0 | 10 | mAdc | |
| Minimum Pressure Offset (Voff) | 0.133 | 0.204 | 0.274 | Vdc |
| Full Scale Output (VFSO) | 4.826 | 4.896 | 4.966 | Vdc |
| Full Scale Span (VFSS) | 4.692 | Vdc | ||
| Temperature Range | -40 | 125 | °C | |
| Maximum Error Over 0° to 85°C | 1.5% |
Key Features
- Specifically designed for intake manifold absolute pressure sensing in engine control systems.
- Patented silicon shear stress strain gauge.
- Temperature compensated over –40°C to +125°C.
- Offers reduction in weight and volume compared to existing hybrid modules.
- Durable epoxy unibody element or thermoplastic small outline, surface mount package.
- Ideal for non-automotive applications.
- Available in three small outline packages and two unibody packages.
Applications
- Turbo boost engine control.
- Ideally suited for microprocessor or microcontroller-based systems.
Q & A
- What is the primary function of the MPX4250A sensor?
The MPX4250A is designed to sense absolute air pressure within the intake manifold, which can be used to compute the amount of fuel required for each cylinder in engine control systems.
- What is the pressure range of the MPX4250A sensor?
The pressure range is from 20 kPa to 250 kPa.
- What is the supply voltage range for the MPX4250A?
The supply voltage range is from 4.85 Vdc to 5.35 Vdc.
- What is the maximum error over the temperature range of 0°C to 85°C?
The maximum error is 1.5% over the temperature range of 0°C to 85°C.
- Is the MPX4250A temperature compensated?
Yes, the MPX4250A is temperature compensated over –40°C to +125°C.
- What types of packages are available for the MPX4250A?
The MPX4250A is available in three small outline packages and two unibody packages.
- Is the MPX4250A suitable for non-automotive applications?
Yes, the MPX4250A is ideal for non-automotive applications.
- What is the typical supply current for the MPX4250A?
The typical supply current is 7.0 mA.
- What is the full scale output voltage range for the MPX4250A?
The full scale output voltage range is from 4.826 Vdc to 4.966 Vdc.
- Does the MPX4250A have any patented technology?
Yes, it features a patented silicon shear stress strain gauge.
