NXP Semiconductors MPXAZ4250AC6T1

Overview

MPXAZ4250AC6T1 from NXP Semiconductors is a manifold absolute pressure (MAP) sensor with on-chip signal conditioning, temperature compensation, and factory calibration. It measures absolute pressure from 20 kPa to 250 kPa, delivers a ratiometric analog output (VOUT = VCC × (P × 0.004 – 0.04)), operates over –40 °C to +125 °C, and is qualified for automotive engine control systems.

For engineers reviewing the MPXAZ4250AC6T1 datasheet, MPXAZ4250AC6T1 pinout, MPXAZ4250AC6T1 application, or MPXAZ4250AC6T1 equivalent, this page provides verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for intake manifold pressure sensing in microcontroller-based engine management and turbo boost control.

Technical Context

The MPXAZ4250AC6T1 integrates a piezoresistive silicon sensing element with thin-film metallization and bipolar signal conditioning circuitry. Its architecture includes two gain stages, on-chip temperature compensation across –40 °C to +125 °C, and a ground reference shift circuit - all monolithically fabricated on a single die.

This device uses dry air as the specified pressure medium and requires the decoupling network shown in Figure 5 (1.0 µF, 0.01 µF, 470 pF) to meet electrical specifications. Output saturation occurs outside the 20–250 kPa range, and accuracy is specified as ±1.5 %VFSS over 0 °C to 85 °C.

Key Specifications

Pinout & Package

MPXAZ4250AC6T1 uses the small outline package Case 482A-01 (98ASB17757C), an 8-pin surface-mount thermoplastic body with gull-wing leads. Pin 1 is marked by a notch or dot; pins 1, 5, 6, 7, and 8 are no-connect terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar manifold absolute pressure sensing applications.

Compared with MPXAZ4250AC6T1, MPXV7025DP lacks on-chip conditioning and absolute reference, demanding additional circuitry and calibration effort, while MPXH6115A trades pressure range breadth for slightly relaxed accuracy - making MPXAZ4250AC6T1 optimal for turbocharged gasoline engines requiring 20–250 kPa coverage and production-ready calibration.

Availability

MPXAZ4250AC6T1 is available at Aetrix Electronics and suitable for automotive engine control, turbo boost monitoring, and microcontroller-based diagnostic systems requiring stable component supply across extended temperature ranges and high-reliability pressure sensing.

Supply support for MPXAZ4250AC6T1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The MPXAZ4250AC6T1 belongs to NXP's legacy MAP sensor product line, engineered specifically for engine management systems requiring calibrated, temperature-compensated absolute pressure data with minimal external components.

FAQ

What is the pressure media compatibility of the MPXAZ4250AC6T1?

The MPXAZ4250AC6T1 is characterized and qualified using dry air as the pressure medium. Exposure to other media - including oils, fuels, or corrosive gases - may degrade performance or long-term reliability. NXP explicitly states that non-dry-air media require factory consultation for compatibility validation. For MPXAZ4250AC6T1 deployments, always confirm fluid compatibility with NXP's application engineering team before integration into sealed or wet-environment systems.

Does the MPXAZ4250AC6T1 require external calibration during system integration?

No, the MPXAZ4250AC6T1 is fully calibrated at the factory and features on-chip temperature compensation. Its transfer function VOUT = VCC × (P × 0.004 – 0.04) is guaranteed across the 20–250 kPa range and 0 °C to 85 °C operating window. System-level calibration is unnecessary unless compensating for PCB layout parasitics or specific ADC nonlinearity - both addressed via the recommended decoupling network in Figure 5 of the datasheet.

Can the MPXAZ4250AC6T1 operate from a 3.3 V supply?

No. The MPXAZ4250AC6T1 specifies a minimum supply voltage of 4.85 VDC and nominal 5.1 VDC operation. At 3.3 V, the internal signal conditioning circuitry fails to bias correctly, resulting in invalid or saturated output. It is not ratiometric below 4.85 V. For 3.3 V systems, consider NXP's newer KMA210 or MPXV7007DP families, which support lower supply rails but require different calibration and interface design.

How does the MPXAZ4250AC6T1 handle pressure transients beyond 250 kPa?

The MPXAZ4250AC6T1 has a maximum rated pressure of 1000 kPa (Table 4), meaning it withstands short-duration overpressure events up to that limit without mechanical damage. However, its output saturates above 250 kPa - delivering a fixed ~4.9 V signal regardless of further pressure increase. For transient overpressure detection, external clamping or monitoring circuitry is required; the device itself provides no over-range indication beyond output saturation.

Is the MPXAZ4250AC6T1 RoHS and REACH compliant?

Yes. As a NXP Semiconductors product manufactured after 2006 and documented in Rev. 8.0 (2017), the MPXAZ4250AC6T1 conforms to EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Compliance is verified per NXP's public declarations and material content reports. Full substance disclosure documentation is available upon request through Aetrix Electronics' regulatory support channel.