Freescale absolute pressure sensors offer enhanced functionality over predecessor

November 15, 2012 // By Christoph Hammerschmidt
From fuel injection to comfort seating spans the application spectrum for Freescale's new Xtrinsic MPXHZ9000 pressure sensors. The three device are pin-compatible successors to the MPXHZ6000 family with added functionality.

Targeting automotive engine management and efficiency applications in the first place, the MPXHZ9000 absolute temperature compensated, piezo-resistive pressure sensors provide the same functionality as Freescale's other integrated pressure sensors, while adding clipping functionality and the ability to customize for multiple end user applications.

The MPXHZ9000 come with package porting and mounting options, offering significant advantages for the automotive engine control market as well as consumer and industrial applications. The MPXHZ9115A is a non-ported sensor for fuel-injected car engines, motorbike and scooter engines and comfort seating and lumbar applications. The MPXHZ9400AC and MPXHZ9250AC are ported versions with tube attachments for applications such as alternative fuel or hybrid/electric vehicles, liquid propane gas (LPG) or remote sensing.

The MPXHZ9000 family of pressure sensors has two new distinct features—factory programmable output clipping and loss of supply/ground output diagnostics. The MPXHZ9000 family can be ordered with factory programmed ratio-metric clipping levels. In addition, these sensors are designed to detect loss of supply or loss of ground conditions and to signal the host controller with output levels outside of the normal operating range.

The pressure sensors run on a five-volt power supply and sense pressures ranging from 15 - 400 kPa. They are available in a thermoplastic eight-lead surface mount package that uses the same pin-out as existing MPXHZ6000 family pressure sensors for easy pin-for-pin compatible design with no board layout change required. Customers benefit from the two-die solution and no laser trimming resulting in less test time. Additional products with pressure ranges from 15 to 400 kPa are planned to be added to the portfolio in the next year, the company said.

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