Circuit Power amplifier stereo IC TDA7854TH 2x 210W

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Circuit Power amplifier stereo IC TDA7854TH 2x 210W

The TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier in a single IC featuring low power dissipation. It is designed to deliver up to 2 × 210W into a 4Ω load in a stereo Single-Ended (SE) application. It combines the benefits of Class D efficiency (≈93 % into a 4 Ω load) with audiophile sound quality comparable to that associated with Class AB amplification.The amplifier operates over a wide supply voltage range from ±12.5V to ±42.5V and features low quiescent current consumption.The TDA8954 is supplied with two diagnostic pins for monitoring the status of Thermal Fold Back (TFB), Over Current Protection (OCP) and other protection circuits.


  • High output power in typical applications:‹SE 2×210W, RL=4 Ω (VDD=41V; VSS=−41V)‹SE
  • Symmetrical operating supply voltage range from ±12.5V to ±42.5V„
  • Stereo full differential inputs, can be used as stereo SE or mono BTL amplifier„Low noise„
  • Smooth pop noise-free start-up and switch off„2-pin diagnostics for protection circuits„
  • Fixed frequency internal or external clock„
  • High efficiency ≈93 %„Zero dead time switching„Low quiescent current„Advanced protection strategy: voltage protection and output current limiting„
  • Thermal FoldBack (TFB) with disable functionality„Fixed gain of 30dB in SE and 36dB in BTL applications
  • „Fully short-circuit proof across load„BD modulation in BTL configuration„Clock protection

he TDA8954 is a two-channel audio power amplifier that uses Class D technology.For each channel, the audio input signal is converted into a digital Pulse Width Modulation (PWM) signal using an analog input stage and a PWM modulator. To drive the output power transistors, the digital PWM signal is fed to a control and handshake block and to high- and low-side driver circuits. This level-shifts the low-power digital PWM signal from a logic level to a high-power PWM signal switching between the main supply lines.A second-order low-pass filter converts the PWM signal to an analog audio signal that can be used to drive a loudspeaker.

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Schematic TDa7854 power amplifier circuit

Schematic Tda7854 Power Amplifier Circuit
Schematic Tda7854 Power Amplifier Circuit


Circuit Power Amplifier Stereo Ic Tda7854Th 2X 210W
Pcb Top
Circuit Power Amplifier Stereo Ic Tda7854Th 2X 210W
Pcb Bottom


Part list

Parts Value description Amount
C1, C2 100p Ceramic capacitor SMD 0805 2
C3, C4 470µ/63V Electrolytic capacitor 2
C5 22µF/160V Electrolytic capacitor 1
C6, C7, C8, C9, C12 470n/35V Polyester Capacitor 5
C10, C11 330p Ceramic capacitor SMD 0805 2
C13, C16 220n Ceramic capacitor SMD 0805 2
C14 47p Ceramic capacitor SMD 0805 1
C15, C21, C22  C31, C32 100n Ceramic capacitor SMD 0805 9
C17, C18, C19, C20, 100n Ceramic capacitor SMD 1206 9
C23, C24, C33, C34 15n Ceramic capacitor SMD 0805 4
C25, C26, C27, C28 220p Ceramic capacitor SMD 0805 4
C29, C30 680n/100V Polyester Capacitor 2
D1 5V1 Zener Diode 5v1 SMD 1
IC1 TDA8954TH NXP integrated circuit 1
DC Terminal block 3 pins Power supply 1
IN 2.54mm connector audio input 1
OUR Terminal block 2 pins Right channel output 1
OUTRL Terminal block 2 pins Left channel output 1
L1, L2 10µH Toroidal Coil  10A 2
R1, R2, R3, R4 220 (221) Resistor SMD 0805 4
R5, R6, R7, R8 5.6K (562) Resistor SMD 0805 4
R9, R10, R13, R14 10R (100) Resistor SMD 1206 4
R11 30K (303) Resistor SMD 0805 1
R12 27K (273) Resistor SMD 0805 1
R15, R16 22 (Red, Red, Black, Gold) Resistor 5W 2
Welding, Wires, PCB, Box, Power Supply


Download the files in PDF and Gerber to make the printed circuit board

Download Mirror

Datasheet do TDA8954


Circuit power audio amplifier IC TPA3116D2 D Class

Download Saturn PCB Design Toolkit


4 thoughts on “Circuit Power amplifier stereo IC TDA7854TH 2x 210W”

  1. BJ je suis à la recherche d’un schéma fonctionnel d’Élevateur de tension D.C. 12v à 19v 5A. Au fait utiliser un laptop de 19vsur un système solaire de 12v sans un onduleur de 12/220v

  2. This is great Toni. By the way, do you have an audio amplifier that you recommend for subwoofer for cars? Stereo with 12V supply (car Battery) and can do 500w double voice coil subs.


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