The TDA2009 amplifier circuit diagram is a bridge audio power amplifier hi-fi in multiwatt package, developed especially for high quality stereo applications. This application is the bridge amplification, where the two tda2009 internal amplifiers are used. The good thing about the TDA series of integrated circuits is that they are electronic components that are easy to find in electronics stores.

The TDA2009 is a class AB stereo audio power amplifier that contains  two  identical  amplifiers capable  of  delivering  10W  per  channel.
It  is  designed  for  quality  Hi-Fi  stereo  application  which  is  easy to construct and has a mini mum need of external components.

The TDA2009A is a class AB dual Hi-Fi Audio power amplifier assembled in MULTIWATT® package, specially designed for stereo application as Hi-Fi and music centers

All features

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• High output power (10 + 10w min. @ d = 1%)
• AC short circuit protection
• High current capability (up to 3.5a)
• Space and cost saving : very low number of external components and simple mounting thanks to the multiwatt® package.
• Thermal overload protection

The module has output current protection and thermal protection. This is the datasheet circuit which gives an excellent sound. The supply voltage required for this kit is 8 – 24V DC at 1 to 2 Amps. Maximum output power will only be obtained with a power supply of at least 20V and greater than 1.5 A, and using 4 ohm speakers.

TDA2009 amplifier circuit diagram schematic, bridge

PCB, printed circuit board for TDA2009A amplifier circuit diagram

Information on the amplifier circuit in bridge with tda2009 IC

The power supply is from 12 to 22 volts max. with current of 2 amperes.

Part List

Component	Value
Resistors
R1	2k or 2.2K
R2	1K
R3, R4	39 Ohms
R5, R6	1 Ohms
Capacitors
C1	100n – Capacitor Ceramic
C2, C3	2.2µF /25V – Capacitor Electrolytic
C4, C6, C7	220µF /25V – Capacitor Electrolytic
C5	22µF/25V – Capacitor Electrolytic
C8, C9	100n – Capacitor Polyester
Semiconductors
IC1	TDA2009
Connectors
IN	Terminal block connector 2 screws – Audio input
OUT	Terminal block connector 2 screws – Audio Output
POWER	Terminal block connector 2 screws – Power supply
Miscellaneous
Power supply de 12 a 22VDC 2A
Heatsink to IC TDA2009
Printed Circuit Board, Welding, Wires, Box, etc.

TDA2009 PDF datasheet UTC

Information about the Bridge Amplifier Circuit with TDA2009A IC

Download the PDF files for this assembly. Includes PDF, PNG, and GERBER PCBs for you to order your PCB.

Download

Mirror

IC TDA2009 PDF datasheet STMicroelectronics

See also the stereo amplifier with the same IC

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About the author

Toni

Xtronic.org blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.