IC TDA2005 amplifier circuit diagram BTL

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TDA2005 amplifier circuit diagram BTL. This circuit is a class AB stereo audio power amplifier designed for quality hi-fi applications using a TDA2005 IC module. It is easy to construct and has a minimum of external components.

The module has output current protection and thermal protection. This is the data book circuit which produces an excellent sound. The supply voltage required for this kit is 8-18V DC at 1 to 2 Amps.

Maximum output power will only be obtained with a power supply of at least 2A at 15V DC, and using 2 Ohm speakers (or 2 by 4 Ohm speakers in parallel). Extra filtering is unnecessary if operating from a battery.

The TDA2005 is a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications. Power booster amplifiers can be easily designed using this device that provides a high current capability (up to 3.5 A) and can drive very low impedance loads (down to 1.6 Ω in stereo applications) obtaining an output power of more than 20 W (bridge configuration).

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Features

  • High output power: PO= 10 + 10 [email protected]= 2 Ω, d=10%
  • PO=20W @RL=4Ω, d=1%.
  • 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
    • FORTUITOUS OPEN GROUND
    • VERY INDUCTIVE LOADS
  • Flexibility in use: bridge or stereo booster amplifiers with or without boostrap and with programmable gain and bandwidth.
  • Space and cost saving: very low number of external components, basic mounting system with no electrical isolation between the package and the heatsink (one screw only).
  • In addition, the circuit offers loudspeaker protection during short circuit for one wire to ground.

Protection system
Open Ground
When the ratio is in the ON condition and the ground is accidentally opened, a standard audio amplifier will be damaged. On the IC TDA2005 protection diodes are included to avoid any damage.
Inductive Load
A protection diode is provided to allow use of the TDA2005 with inductive loads.
DC Voltage
The maximum operating DC voltage for the TDA2005 is 18V.
However, the device can withstand a DC voltage up to 28V with no damage. This could occur during winter if two batteries are series connected to crank the engine.

Loudspeaker Protection
The circuit offers loudspeaker protection during short circuit for one wire to ground.

Short Circuit (AC and DC conditions)
TheTDA2005 can withstand a permanent short-circuit on the output for a supply voltage up to 16V

Polarity Inversion
High current (up to 10A) can be handled by the device with no damage for a longer period than the blow-out time of a quick 2A fuse (normally connected in series with the supply). This feature is added to avoid destruction, if during fitting to the car, a mistake on the connection of the supply is made.

High current (up to 10A) can be handled by the device with no damage for a longer period than the blow-out time of a quick 2A fuse (normally connected in series with the supply). This feature is added to avoid destruction, if during fitting to the car, a mistake on the connection of the supply is made.

Schematic IC TDA2005 amplifier circuit diagram BTL

Ic Tda2005 Amplifier Circuit Diagram Btl Schematic
Ic Tda2005 Amplifier Circuit Diagram Btl Schematic

PCB suggested

Printed Circuit Board, Pcb Ic Tda2005 Amplifier Circuit Diagram Btl Schematic
Printed Circuit Board, Pcb Tda2005
Printed Circuit Board Component View, Pcb Ic Tda2005 Amplifier Circuit Diagram Btl Schematic
Printed Circuit Board Component View
Printed Circuit Board Silk, Pcb Ic Tda2005 Amplifier Circuit Diagram Btl Schematic
Pcb Silk

BOM for assembling the amplifier with tda2005

Last Update: 11/29/2021 13:06

Part Value Description Quantity
Resistors 1/4W
R1 120K Brown, black, red, gold 1
R2 1K Brown, black, red, gold 1
R3, R4 1 Brown, black, gold, gold 2
R5 2K Red, black, red, gold 1
R6, R7 12 Brown, red, black, gold 2
Capacitors
C1, C2 2.2uF/25v Electrolytic Capacitor 2
C3, C5 100nF (104) Ceramic Capacitor 2
C4 100nF (104) Polyester capacitor 1
C6 10uF/25v Electrolytic Capacitor 1
C7, C8 100uF/25v Electrolytic Capacitor 2
C9, C10 220uF/25v Electrolytic Capacitor 2
C11 1000uF/25v Electrolytic Capacitor 1
Semiconductors
IC1 TDA2005R Audio amplifier integrated circuit. 1
Miscellaneous
CN1 IN JST Xh2 connector 2.54 mm pitch or equivalent. 1
OUT Audio output Terminal block 2 pin 5.08 mm 1
PWR Power supply DC Terminal block 2 pin 5.08 mm 1
P1 100k Potentiometer Single 1
Solder, Wires, Housing for the circuit, PCB, heat sink for the TDA, power supply, etc.

All capacitors for 25V or higher

For a stereo version, assembly two identical units, and you can use a single source sized for stereo version.

Download schematic + board to be edited in Autodesk Eagle

Download PDF
Mirror

Download PDF TDA2005 datasheet TDa2005R TDa2005T

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