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[FAQ] TAS2505: TAS2505: Can TAS2505 achieve 32dB gain?

Ore Ogundana
Genius 9795 points
Part Number: TAS2505

Tool/software:

TAS2505 reference guide claims the device can perform a 32dB gain, is this accurate? 

  • 0
    TI__Genius 9795 points

    Hello,

     

    To clarify how the gain levels in TAS2505 work.

     

    The gain levels according to the reference guide are 6dB, 12dB, 18dB, 24dB and 32dB in Reg 30h on page 1. The experiments done helped discover that TAS2505's 32dB gain is actually 30dB and not 32dB. This is a typo in the reference guide/DS.

     

    The register write for 32dB in Reg 30h is ‘w 30 30 50’, this 50h value is actually for 30dB gain and not 32dB. So bit D6-D4 at 101b =32dB gain is actually 30dB. See image below for reference:

     

    If you see clipping at 32dB with a high input level, this is expected. The high gain levels are suitable for low input levels.

     

    Regards,

    Ore.