TDA2005 Audio Amplifier

Hi community! Today's project is gonna be about the TDA2005 Audio Amplifier! One of the best audio amplifier on the market! So let's not waste any time and dive in!

Hi Community!

Two op-amps are included in the TDA2005’s internal structure. In this circuit, we use a bridge model to connect them. There is a lot of output power in this shape, more than in others. If you utilize a mono system, you will get a 10 watt output. However, the power of the bridge system is 20-30 watts. An output speaker and a power supply are also present. Because it is a power amplifier for a car radio, the power supply voltage is 12 volts 14.4 volts. Its importance is that it can respond to frequencies ranging from 35 Hz to 15 KHz. We have a good understanding of the TDA2005 amplifier circuit diagram’s features. We’ll wait and see how it goes.

Materials

  1. • R1—120KΩ
  2. • R2—1KΩ
  3. • R3—36Ω
  4. • R4—1KΩ
  5. • R5—10Ω
  6. • R6—1KΩ
  7. • R7—1Ω
  8. • R8—1Ω
  9. • C1-2.2uF
  10. • C2-2.2uF
  11. • C3-0.1uF
  12. • C4-10uF
  13. • C5-100uF
  14. • C6-220uF
  15. • C7-100uF
  16. • C8-220uF
  17. • C9-0.1uF
  18. • C10-0.1uF
  19. • IC1—TDA2005
  20. • SP1—8 Ω 0.25W speaker
  21. • Power Supply or 9V Battery

IC Datasheet Information

  1. • High Output Power
  2. • High reliability of the chip and package with additional complete safety during operation thanks to protection against: output DC and AC short circuit to ground, overrating chip temperature, load dump voltage surge, very inductive loads.
  3. • Flexibility in use: bridge or stereo booster amplifiers with or without boostrap and with programmable gain and bandwidth.
  4. • Space and cost saving: very low number of external components, very simple mounting system with no electrical isolation between the package and the heatsink (one screw only).
Datasheet of TDA2005 from STMicroelectronics

IC Datasheet Pinout

  1. Pin1: Input + 1 - Non-Inverting Input of amplifier 1
  2. Pin2: Input - 1 - Inverting Input of amplifier 1
  3. Pin3: SVRR - Supply Voltage Rejection Ratio
  4. Pin4: Input - 2 - Inverting Input of amplifier 2
  5. Pin5: Input + 2 - Non-Inverting Input of amplifier 2
  6. Pin6: Ground - The ground is connected to this pin
  7. Pin7: Bootstrap 2 - Amplifier 2 bootstrap capacitor
  8. Pin8: Output 2 - The output of amplifier 2
  9. Pin9: + Vs - Positive Power Supply
  10. Pin10: Output 1 - The output of amplifier 1
  11. Pin11: Bootstrap 1 - Amplifier 1 bootstrap capacitor
Pinout of TDA2005 from STMicroelectronics

Applications of the IC

The IC TDA2005 is one of the most essential integrated circuit in the audio area, and it's found in the applications below.

  1. • Employed in Car radio
  2. • Used in Microphone amplifiers
  3. • Used in audio power amplifiers
  4. • Incorporated in Woofer amplifiers
  5. • Used in Music players

Schematic of the TDA2005 Audio Amplifier

Schematic on the breadboard

Make sure to check our full document about audio amplifiers where i make 5 audio amplifier circuits!

Audio Amplifier Circuits

Posted by Jorge Eldis on January 15, 2022