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Problems with ADIS16265 EVAL Board ...

Thread Summary

The user experienced inconsistent voltage readings and low power diagnosis from an ADIS16265 Gyro evaluation board, with values fluctuating between 1.9V and 4.9V. The issue was resolved by replacing the evaluation board, suggesting a potential cold soldering problem. The new board provided stable readings and correct voltage values immediately upon connection.
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Hi everybody,

I am just working on the implementation of a ADIS16265 Gyro into my roboter application and a have problems

with the readings of the Evaluation board.

The Board is sending sometimes stupid values.

i.e: I am asking for the voltage of the board and get  values between 1.9 ... 4.9 Voltage back.

Sometime, the board is sending for a long time the correct value, which is around 4.95 Voltage,

Which I check with a oscilloscope. The ripple is around 5mV, which should be o.k. as well.

The diagnosis status is saying as well, that it is low power on the chip (sometimes).

It is a LGA mounted chip and I can only check the voltage up the connector of the board, which is fine.

Not on the controller directly.

Does somebody has bad experience with this chip as well ?

Or can this behaviour happen by a software failure. Communication to a other SPI Client is running well.

Is the a test program existing for a atmega - controller, where I can check, if it is a software or Hardware failure.

Best regards

R.

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  • Hello,

    I check the voltage on the break board (top of the connector) and get 4.95 V.

    I also checked the Voltage on the board, SMD pads of the connector J1. Same value.

    The board give back a stable value of dez 16265 for the product ID, but the diagnose bit is toggling sometimes the bit 0 (low voltage).

    Up to now, only two commands are running on the SPI bus. (Product ID 0x56 and Diag_stat 0x3C).

    Could still not found the reason. I there a special point on the board, where I have to check the voltage.

    Connectors are fine so far.

    Best regards


    Ritchie

Reply
  • Hello,

    I check the voltage on the break board (top of the connector) and get 4.95 V.

    I also checked the Voltage on the board, SMD pads of the connector J1. Same value.

    The board give back a stable value of dez 16265 for the product ID, but the diagnose bit is toggling sometimes the bit 0 (low voltage).

    Up to now, only two commands are running on the SPI bus. (Product ID 0x56 and Diag_stat 0x3C).

    Could still not found the reason. I there a special point on the board, where I have to check the voltage.

    Connectors are fine so far.

    Best regards


    Ritchie

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