NXP Semiconductors MP3H6115AC6U

Overview

MP3H6115AC6U from Freescale Semiconductor is an absolute pressure sensor with 15–115 kPa range, ratiometric analog output (2.7–3.3 V supply), ±1.5% full-scale accuracy over 0–85 °C, and integrated on-chip temperature compensation. It serves as a signal-conditioned transducer in engine MAP sensing, barometric measurement, and altimetry systems.

For engineers reviewing the MP3H6115AC6U datasheet, MP3H6115AC6U pinout, MP3H6115AC6U application, or MP3H6115AC6U equivalent, key selection criteria include its absolute pressure reference, 1.0 ms response time, thermoplastic PPS surface-mount package, and compatibility with microcontroller ADC inputs requiring stable low-drift analog voltage signals.

Technical Context

The MP3H6115AC6U integrates a piezoresistive silicon diaphragm with thin-film resistor networks and bipolar op-amp circuitry to deliver a calibrated, temperature-compensated analog voltage output. Its transfer function is VOUT = VS × (0.009 × P – 0.095) ± error, with ratiometric behavior tied to supply voltage.

It features on-die fluorosilicone gel encapsulation for environmental isolation, sealed vacuum reference cavity, and operates exclusively with dry air media. The device is qualified for -40 °C to +125 °C storage and operation, with offset stability of ±0.25% VFSS after 1000 pressure/temperature cycles.

Key Specifications

Pinout & Package

MP3H6115AC6U uses a surface-mount small outline package (Case 98ARH99089A), 8-pin, thermoplastic PPS body with chamfered corner marking Pin 1. Pins 1, 5–8 are internal DNC (do not connect); only Pins 2 (VS), 3 (GND), and 4 (VOUT) are externally accessible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPX5115A and SP120, the MP3H6115AC6U uniquely combines ratiometric analog output, fluorosilicone-enveloped die, and SSOP-8 packaging-making it optimal for cost-sensitive, space-constrained, and environmentally demanding analog-sensing designs.

Availability

MP3H6115AC6U is available at Aetrix Electronics and suitable for engine control units, weather station instrumentation, aviation altimeters, and industrial process monitors requiring stable component supply and long-lifecycle availability.

Supply support for MP3H6115AC6U 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 fabless semiconductor company specializing in embedded processing, sensors, and analog solutions for automotive, industrial, and consumer markets.

The MP3H6115AC6U belongs to Freescale's MP3H series of monolithic, signal-conditioned pressure sensors, engineered specifically for high-reliability analog pressure measurement in harsh environments where long-term stability and temperature resilience are critical.

FAQ

What is the pressure reference type of the MP3H6115AC6U?

The MP3H6115AC6U is an absolute pressure sensor with a sealed vacuum reference cavity. This means its output voltage corresponds to pressure relative to perfect vacuum-not ambient atmospheric pressure or differential between two ports. The MP3H6115AC6U achieves this via internal vacuum packaging of the silicon diaphragm, enabling accurate barometric and altimetric measurements without external reference lines.

Does the MP3H6115AC6U require external calibration or trimming?

No, the MP3H6115AC6U does not require external calibration. It features factory-trimmed on-chip thin-film resistor networks and integrated bipolar op-amp circuitry that provide full-scale span and offset compensation across temperature. The MP3H6115AC6U delivers calibrated analog output directly from the VOUT pin, eliminating the need for user calibration circuits or software correction tables in most applications.

What is the maximum pressure the MP3H6115AC6U can withstand without damage?

The MP3H6115AC6U has a maximum pressure rating of 400 kPa, beyond which permanent damage or performance degradation may occur. While its specified operating range is 15–115 kPa, the device is mechanically robust enough to survive short-duration overpressure events up to 400 kPa. However, sustained operation above 115 kPa will cause output saturation and invalid readings-so system design must limit applied pressure within the rated range for accurate measurement.

Can the MP3H6115AC6U be used with a 5 V supply?

No, the MP3H6115AC6U is not rated for 5 V operation. Its absolute maximum supply voltage is 3.3 V, and recommended operating range is 2.7–3.3 VDC. Applying 5 V risks damaging the internal bipolar op-amp circuitry and thin-film resistors. For 5 V systems, a regulated 3.3 V LDO or DC-DC converter must be used to power the MP3H6115AC6U; its ratiometric output ensures accuracy remains tied to the actual 3.3 V rail.

Is the MP3H6115AC6U compatible with media other than dry air?

The MP3H6115AC6U is qualified and characterized for use with dry air as the pressure medium. Other media-including moisture, oils, fuels, or corrosive gases-may degrade the fluorosilicone gel, compromise wire bond integrity, or affect long-term zero-point stability. Freescale explicitly states that non-dry-air media may adversely impact performance and reliability. For alternative media, consult NXP (ex-Freescale) application engineering before deployment; the MP3H6115AC6U is not certified for such use out-of-box.