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INA2180: INA2180 Footprint Ambiguity

Andrew Charnley
Intellectual 640 points
Part Number: INA2180

Hi,

I'm close to cutting a PCB which uses your INA2180 product.

The product description describes it as a;

8VSSOP: 15 mm2: 4.9 x 3(VSSOP) 

The datasheet indicates it is a 3x3 with 0.65mm pitch.

Either way, none of these are VSSOP which has a 0.50mm pitch and different dimensions;

Housings_SSOP:VSSOP-8_2.3x2mm_Pitch0.5mm

However:

Housings_SSOP:TSSOP-8_3x3mm_Pitch0.65mm

Is a perfect match.

Can you confirm the footprint is actually TSSOP?

Regards,

Andrew

  • 0
    TI__Mastermind 31745 points
    Hello Andrew,

    The "8VSSOP: 15 mm2: 4.9 x 3(VSSOP)" description listed on the INA2180 product page seems to include overall area including the length added by the pins. The package body is 3.1mm x 3.1mm, which is defintely VSSOP package dimensions, but I am not sure on the pitch. It does seems that VSSOP-8 pitch is 0.5mm and the INA2180 shows a 0.65mm pitch in the datasheet.

    I will check with team, but we will have a confirmation at the latest on Monday the 27th of November after the end of the holidays.

    Sincerely,
    Peter Iliya
    Current Sense Applications
  • 0 in reply to Peter Iliya
    Intellectual 640 points

    Thanks Peter. There are various chip sizes but to my knowledge it fits the definition of the 3x3 TSSOP 0.65mm. I can't find a 3.1mm VSSOP footprint.

    Regards, Andrew

  • 0 in reply to Andrew Charnley
    TI__Mastermind 31745 points

    Andrew,

    I apologize for the late reply, but I can say a couple things.

    We designate our device orderable part names (e.g., INA2180A1IDGKR) with a letter code ('DGK') that specifies the device's package (VSSOP). For most, if not all, of our 8-pin DGK parts we spec our pitch at 0.65mm. This can be seen with the following mechanical drawing from our website:

    At the bottom Note E says that this part satisfies the JEDEC MO-187 spec, specifically variation AA. You can register for the latest version (issue F from September 2010) of JEDEC MO-187 and see that for Variation AA, the pitch (symbol 'e') equals 0.65mm.

    Overall, you want to abide by the mechanical drawing's layout for your design. I hope this helps.

    Sincerely,

    Peter Iliya

    Current Sensing Applications