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PGA308 OTP data retention

Timothy Starr
Expert 2445 points
Other Parts Discussed in Thread: PGA308, PGA300, PGA309

Hello-

What is the guaranteed retention time for the OTP of the PGA308?

Also, is there any chance we can program it more than 4 times? If we do, what are the implications?

Thanks and Best Regards,

-Tim Starr on behalf of RC@WC

  • 0
    TI__Intellectual 1840 points

    Pls try upcoming PGA300, it may be better candidate for your case.

  • 0
    TI__Mastermind 27715 points

    Hello Tim,

    Unfortunately it is not possible to program the power-on-reset bank of OTP memory on the PGA308 more than four times. We also don't have a spec for the guaranteed retention time of the data, but it is reasonable to assume that data is retained for the lifetime of the device.

    The PGA309 is similar to the PGA308 and uses an external EEPROM to store its calibrated settings, and therefore can be rewritten many times. Aside from some minor differences in analog performance, the PGA309 is advantageous in that it performs temperature compensation to correct for sensor nonlinearity over temperature. The PGA308 can only calibrate at one temperature.

    As Hawk suggested, the PGA300 is another calibrated bridge sensor signal conditioner which contains an internal EEPROM that may be rewritten many times. This device is more integrated than the PGA308 or PGA309, and may be of interest to you depending on your application requirements.

    Best regards,

    Ian Williams
    Linear Applications Engineer
    Precision Analog - Op Amps