September 25, 2021

CHICAGO PIXELS

SEMICONDUCTOR RESEARCH CENTER

AMPLIFIER CLASS D 2x100W WITH TDA7498

Compact audio class-D amplifier by 100+100 watt music, working single-feed (comprised between 15 and 34 volt) and capable of driving two speakers with 8 ohm impedance (also with 4 ohm and 6 ohm). Based on the integrated TDA7498, has four levels of gain can be set by dip switch: 25.6dB, 31.6dB, 35.1dB and 37.6dB, mute and stand-by mode, short circuit protection and over-temperature, mounting holes to facilitate installation.

Technical specifications

  • Chip:TDA7498
  • Power supply: from 15V to 34 V (recommended 24Vdc with 5 A output current)
  • Output Power:
    – 100W + 100W (Vcc = 36V, RL = 6 ohm, THD: 10%)
    – 80W + 80W (Vcc = 34V, RL = 8 ohm, THD: 10%)
  • Four selectable gain settings: 25,6dB, 31.6dB, 35.1dB and 37.6dB
  • The PCB has mounting holes to facilitate installation
  • short circuit and over temperature protection
  • Mute and stand-by
  • Efficiency: 90%
  • Dimensions (mm): 90 (length) x 64 (width) x 16.5 (height)
  • Weight: 88 grams

submitted by /u/Emma713ky
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