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PGA400-EP: Aerospace application

Harsha GS
Prodigy 20 points
Part Number: PGA400-EP

Hello,

 We want to replace Sensor Signal Conditioner in one of our piezoresistive pressure sensors which is used in aircraft application like Braking and steering system, Cabin and oxygen pressure, Engine compressor (P0, P2, P3), Oil/Fuel/Hydraulic pressure. Expected parameters to be adjusted are Offset (OFF), Sensitivity (S0), Temperature coefficient of offset (TCO) Temperature coefficient of sensitivity (TCS) and several output type  0.5V to 5V, 0.5V to 4,5V, …..and 4 to 20 mA (pressure cell consumption: 2mA Max). we are expecting Conditioner to support below  

 

  • Temperature range: -55°C to 125°C, Tj min: 150°C

  • 5V Power supply (voltage reference)
  • Future market advantage: serial bus (RS485, can, …)
  • Compensation accuracy target: 0.1% (Polynomial compensation order = 3)
  • BW: 1000 Hz
  • SEU susceptibility to be considered
  • Standards: DO254 Level A, DO178 Level A, DO160.
  1. Can use PGA400-EP for aerospace application?
  2. is it support Temperature range: -55°C to 125°C?
  3. is the software used in microcontroller Certified?
  4. What standards the PGA400-EP certified? DO-254? DO-178? DO-160?
  5. is it support accuracy of 0.1%?
  6. can I meet an application engineer to discuss in details?

Thanks,

Harsha GS


  • 0
    TI__Mastermind 31655 points
    Hello,

    1. This depends on the specification for the application. Based on your following questions, this part will likely not fit the bill.
    2. No, in the datasheet section 4.3 Recommended Operating Conditions the temperature range is shown to be -40C to 125C
    3. The microcontroller must be programmed by the user.
    4. The PGA400-EP has not been submitted for certification under any of these standards.
    5. The sensor compensation algorithms are implemented in the user-created software, and this compensation accuracy is dependent on that.
    6. Further questions not requiring proprietary information can be discussed on E2E.

    Regards,
  • 0 in reply to Scott Cummins
    Prodigy 20 points

    • Temperature range: -40°C to 125°C could be accepted.

    • What kind of the manufacturer documentations available?

    • What certification/qualification the design have?

    • What package is recommended for aerospace and defense?.

    Thanks,

    Harsha GS

  • 0 in reply to Harsha GS
    TI__Mastermind 31655 points
    All of the documentation available for the device is listed on the PGA400EP product page here: www.ti.com/.../PGA400-EP

    Any certifications or qualifications will be listed in the datasheet on the product page. This note on the EP devices gives some more background on the general testing done with these devices: www.ti.com/.../slyc143e.pdf (note the PGA400EP is not listed in this document, but it does carry the EP designation).

    The QFN package is the recommended package in this case.

    Regards,