TPA3132D2 vs. MAX9709 measurements EMI / EMV

Comparative measurements between the TPA3132D2 (2 different boards) and MAX9709.

The interfering radiation in different frequency bands was measured with different operating parameters.

Measurement Setup/devices/software:

  • DVT-T stick with 70cm wire antenna and R820T tuner
    RTLSDR scanner
    Distance antenna <-> amplifier: 50 cm
    Load: 2-way speaker BR25E wired by 150cm 2 x 0.5mm²
    VCC: 12V Li Battery

Examinees

MAX9709 V.3 (left), TPA3132D2 Rev.0D (right)

MAX9709 V.3 (left), TPA3132D2 Rev.0D (right)

If there is no color code specified for the TPA3132D2, it is to the variant "Red" (always filterless)

20-200 MHz, no load

20-200 MHz reference

20-200 MHz reference

20-200 MHz MAX9709 without load

20-200 MHz MAX9709 without load

20-200 MHz TPA3132D2 without load

20-200 MHz TPA3132D2 without load

20-200Mhz with load

20-200 MHz MAX9709

20-200 MHz MAX9709

20-200 MHz TPA3132D2

20-200 MHz TPA3132D2

85-110Mhz (FM range)

85-110 MHz reference

85-110 MHz reference

85-110 MHz MAX9709

85-110 MHz MAX9709

85-110 MHz TPA3132D2

85-110 MHz TPA3132D2

85-86 MHz

85-86 MHz reference

85-86 MHz reference

85-86 MHz MAX9709

85-86 MHz MAX9709

85-86 MHz TPA3132D2

85-86 MHz TPA3132D2

20-1000 MHz

20-1000 MHz reference

20-1000 MHz reference

20-1000Mhz TPA3132D2 (Blue) (filterless)

20-1000Mhz TPA3132D2 (Blue) (filterless)

20-1000Mhz TPA3132D2 (Red)

20-1000Mhz TPA3132D2 (Red)

20-200 MHz comparison
TPA3132D2 (Red, filterless) vs. TPA3132D2 (Blue, ferrite-bead filter)

20-200Mhz TPA3132D2 (Red) without load

20-200Mhz TPA3132D2 (Red) without load

20-200 MHz TPA3132D2 (blue) without load

20-200 MHz TPA3132D2 (blue) without load

20-200Mhz TPA3132D2 (Red)

20-200Mhz TPA3132D2 (Red)

20-200Mhz TPA3132D2 (Blue) (filterless)

20-200Mhz TPA3132D2 (Blue) (filterless)

20-200Mhz TPA3132D2 (Blue) (ferrite-bead filter)

20-200Mhz TPA3132D2 (Blue) (ferrite-bead filter)

20-200 MHz comparison
TPA3132D2 (Red, filterless / SMD ferrite) vs. MAX9709 (filterless)

20-110 MHz TPA3132D2 vs. MAX9709 (Hanning filtered)

20-110 MHz TPA3132D2 vs. MAX9709 (Hanning filtered)

20-110Mhz TPA3132D2 vs. MAX9709 (max. amplitude)

20-110Mhz TPA3132D2 vs. MAX9709 (max. amplitude)

20-200 MHz comparison
TPA3132D2 - filterless / SMD-ferrite / wired ferrite

20-200 MHz TPA3132D2 ferrite leaded (Hanning)

20-200Mhz TPA3132D2 wired ferrite (Hanning)

20-200 MHz TPA3132D2 SMD ferrite (Hanning)

20-200 MHz TPA3132D2 SMD ferrite (Hanning)

85-110 MHz comparison
TPA3132D2 - filterless / wired ferrite

TPA3132D2 85-110Mhz filterless # 2

TPA3132D2 85-110Mhz filterless # 2

TPA3132D2 85-110Mhz wired ferrite

85-110 MHz comparison
TPA3132D2 - filterless / SMD ferrite

TPA3132D2 85-110Mhz filterless # 1

TPA3132D2 85-110Mhz filterless # 1

85-110 MHz TPA3132D2 SMD ferrite

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3 responses

  1. Georch says:

    Which ferrite is used on TPA3132?

    • 360customs says:

      Hi mate,
      ferrites used: “Murata BLM21PG121SN1D”.
      If you need more current, you may take one of those: HI1206T161R-10, MLB-321611-0120PW, MLB-201209-0120PU, WE 74279221111.
      Cheers, Christian

  1. 7 February 2015

    […] […]

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