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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.

Parents
  • 1. Answer

    You can see only the signal level, which is up to 3.3V for High level. My controller (ATMEGA644) is running with 5V and I am not 100% sure, If the SPI Interface will running proper with such a high level.

    Yes, 5V is only reach by tristate level.

    2. Answer

    Yes

    3.Answer

    Pull Up installed.

    4. Answer

    Nothing installed up to now

    Chip 74HCT125 is on the way (already order) and I will see, what will happen, when the voltage level is proper 5V.

    Best regards


    Ritchie

Reply
  • 1. Answer

    You can see only the signal level, which is up to 3.3V for High level. My controller (ATMEGA644) is running with 5V and I am not 100% sure, If the SPI Interface will running proper with such a high level.

    Yes, 5V is only reach by tristate level.

    2. Answer

    Yes

    3.Answer

    Pull Up installed.

    4. Answer

    Nothing installed up to now

    Chip 74HCT125 is on the way (already order) and I will see, what will happen, when the voltage level is proper 5V.

    Best regards


    Ritchie

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