NXP Semiconductors MPX5700AP

Overview

MPX5700AP from Freescale Semiconductor is a silicon piezoresistive pressure sensor with on-chip signal conditioning, temperature compensation, and factory calibration for absolute pressure measurement. It delivers a ratiometric 0.2–4.7 V analog output over 0–700 kPa (0–101.5 psi), operates from 4.75–5.25 V supply, draws ≤10 mA, and maintains ±2.5% full-scale accuracy across –40°C to +125°C. It is used in HVAC airflow monitoring, medical pneumatic controls, and industrial process pressure feedback loops.

For engineers reviewing the MPX5700AP datasheet, MPX5700AP pinout, MPX5700AP application, or MPX5700AP equivalent, key selection criteria include its unibody epoxy package (Case 867B-04), single-port absolute pressure configuration, 1.0 ms response time, and compatibility with microcontroller A/D inputs requiring stable, calibrated analog pressure signals.

Technical Context

The MPX5700AP integrates a monolithic silicon shear-stress strain gauge with thin-film metallization and bipolar processing. Its internal architecture includes two gain stages, temperature compensation circuitry, and a ground reference shift network - all fabricated on a single die and sealed with fluorosilicone gel for media isolation.

It functions as a ratiometric transducer: output voltage scales linearly with both applied pressure and supply voltage (V_OUT = V_S × (0.0012858 × P + 0.04)), enabling direct interface to ADCs without external scaling. The device requires no external zero or span adjustment and is qualified for operation up to 2800 kPa maximum pressure (P1) with P2 ≤ 500 kPa.

Key Specifications

Pinout & Package

MPX5700AP uses the unibody epoxy Case 867B-04 package with six leads and a single pressure port on the P1 side. Pins 4, 5, and 6 are no-connects per internal schematic and must remain unconnected in PCB layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPX5700A and MPX5999D, the MPX5700AP delivers optimal cost-performance balance for 0–700 kPa absolute sensing: its Case 867B-04 package enables compact single-port mounting, its 90° lead form (GP1 variant) simplifies vertical PCB insertion, and its factory calibration eliminates post-assembly trimming.

Availability

MPX5700AP is available at Aetrix Electronics and suitable for medical ventilator feedback, HVAC airflow monitoring, industrial tank level sensing, and automotive brake vacuum detection requiring stable component supply and long-lifecycle support.

Supply support for MPX5700AP 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

Freescale Semiconductor (now part of NXP Semiconductors) is a global leader in embedded processing and sensor solutions, with core expertise in automotive, industrial, and medical-grade analog ICs.

The MPX5700 series belongs to Freescale's Xtrinsic pressure sensor product line, engineered specifically for microcontroller-based systems needing calibrated, low-drift analog pressure outputs without external signal conditioning.

FAQ

What is the pressure port configuration of the MPX5700AP?

The MPX5700AP features a single pressure port on the P1 (positive pressure) side, identified by the attached port in Case 867B-04 packaging. P2 is sealed to ambient atmospheric pressure internally, making it an absolute pressure sensor. The port must be exposed to the measured medium, while the opposite side remains vented to atmosphere per Freescale's identification table.

Does the MPX5700AP require external calibration or trimming?

No, the MPX5700AP does not require external calibration or trimming. It is fully temperature-compensated and factory-calibrated across 0–85°C, delivering guaranteed accuracy of ±2.5% VFSS without user intervention. All compensation and calibration data are implemented on-die, so MPX5700AP operates as a plug-and-play analog pressure transducer.

Can the MPX5700AP be used with a 3.3 V microcontroller supply?

No - the MPX5700AP requires a nominal 5.0 V supply (4.75–5.25 V range) and is not rated for 3.3 V operation. Its internal circuitry, including gain stages and reference shift network, is designed for 5 V excitation. Using 3.3 V will result in out-of-spec output voltage (e.g., <3.2 V full scale) and degraded accuracy; MPX5700AP must be powered from a dedicated 5 V rail or LDO.

What is the meaning of "GP1" in MPX5700AP/GP1 ordering code?

The "GP1" suffix in MPX5700AP/GP1 denotes a 90-degree lead form variant of the MPX5700AP, where leads are bent perpendicular to the package body to enable vertical through-hole mounting. This differs from standard GP lead configuration and is documented in Revision 10 (Oct 2012) of the MPX5700 datasheet as a mechanical option for space-constrained PCB layouts.

How does the MPX5700AP handle media compatibility beyond dry air?

The MPX5700AP's performance and reliability specifications are validated using dry air as the pressure medium. Exposure to other media - including moisture, oils, or corrosive gases - may degrade long-term stability or cause fluorosilicone gel swelling. Freescale explicitly advises contacting factory engineering before deploying MPX5700AP with non-dry-air media to confirm compatibility and avoid premature failure.