Overview
The MPX4250AP, produced by NXP USA Inc., is a Manifold Absolute Pressure (MAP) sensor designed for engine control systems. This sensor is specifically engineered to sense absolute air pressure within the intake manifold, which is crucial for calculating the amount of fuel required for each cylinder in an engine. The MPX4250AP utilizes advanced micromachining techniques, thin-film metallization, and bipolar processing to provide an accurate and high-level analog output signal proportional to the applied pressure. Its small form factor, high reliability, and on-chip signal conditioning make it an economical and logical choice for automotive system designers.
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 |
| Temperature Range | -40 | 125 | °C |
Key Features
- Specifically designed for intake manifold absolute pressure sensing in engine control systems.
- Patented silicon shear stress strain gauge for accurate pressure measurement.
- Temperature compensated over -40°C to +125°C.
- Maximum error of 1.5% over 0°C to 85°C.
- Durable epoxy unibody element or thermoplastic small outline, surface mount package.
- Ideal for non-automotive applications as well.
Applications
- Turbo boost engine control systems.
- Ideally suited for microprocessor or microcontroller-based systems.
Q & A
- What is the primary function of the MPX4250AP sensor?
The MPX4250AP sensor is designed to sense absolute air pressure within the intake manifold, which is used to calculate the amount of fuel required for each cylinder in an engine.
- What is the pressure range of the MPX4250AP sensor?
The pressure range of the MPX4250AP sensor is from 20 to 250 kPa.
- What is the supply voltage range for the MPX4250AP sensor?
The supply voltage range for the MPX4250AP sensor is from 4.85 to 5.35 Vdc.
- How accurate is the MPX4250AP sensor over the temperature range of 0°C to 85°C?
The MPX4250AP sensor has a maximum error of 1.5% over the temperature range of 0°C to 85°C.
- What types of packages are available for the MPX4250AP sensor?
The MPX4250AP sensor is available in durable epoxy unibody elements and thermoplastic small outline, surface mount packages.
- Is the MPX4250AP sensor suitable for non-automotive applications?
- What is the temperature compensation range for the MPX4250AP sensor?
The MPX4250AP sensor is temperature compensated over the range of -40°C to +125°C.
- How does the MPX4250AP sensor output signal relate to the applied pressure?
The output signal of the MPX4250AP sensor is proportional to the applied pressure, following the transfer function VOUT = VS * (0.004 * P - 0.04) ± (Pressure Error * Temp. Factor * 0.004 * VS).
- What are the typical applications of the MPX4250AP sensor?
The MPX4250AP sensor is typically used in turbo boost engine control systems and is ideally suited for microprocessor or microcontroller-based systems.
- What are the benefits of using the MPX4250AP sensor in automotive systems?
The MPX4250AP sensor offers a small form factor, high reliability, and on-chip signal conditioning, making it an economical and logical choice for automotive system designers.
