TPA3132D2 vs. MAX9709 measurements EMI / EMV
Table of Contents
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 (without filter)
- TPA3132D2 (Red) (without filter)
- TPA3132D2 (Blue) (filterless/ferrite bead C filter)
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)
AGML battery charger
20-200 MHz, no load
20-200 MHz reference
20-200 MHz MAX9709 without load
20-200 MHz TPA3132D2 without load
20-200Mhz with load
20-200 MHz MAX9709
20-200 MHz TPA3132D2
85-110Mhz (FM range)
85-110 MHz reference
85-110 MHz MAX9709
85-110 MHz TPA3132D2
85-86 MHz
85-86 MHz reference
85-86 MHz MAX9709
85-86 MHz TPA3132D2
20-1000 MHz
20-1000 MHz reference
20-1000Mhz TPA3132D2 (Blue) (filterless)
20-1000Mhz TPA3132D2 (Red)
20-200 MHz comparison
TPA3132D2 (Red, filterless) vs. TPA3132D2 (Blue, ferrite-bead filter)
20-200Mhz TPA3132D2 (Red) without load
20-200 MHz TPA3132D2 (blue) without load
20-200Mhz TPA3132D2 (Red)
20-200Mhz TPA3132D2 (Blue) (filterless)
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)
20-110Mhz TPA3132D2 vs. MAX9709 (max. amplitude)
20-200 MHz comparison
TPA3132D2 - filterless / SMD-ferrite / wired ferrite
20-200Mhz TPA3132D2 wired 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 wired ferrite
85-110 MHz comparison
TPA3132D2 - filterless / SMD ferrite
TPA3132D2 85-110Mhz filterless # 1
85-110 MHz TPA3132D2 SMD ferrite
Which ferrite is used on TPA3132?
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