TDA2822 amplifier circuit diagram stereo 2x 1W, TDA2822 is an ideal Op amp for low output applications. It is a good choice as a preamplifier in stereo high power amplifier circuits. It has two inputs and two outputs which can deliver 250 milli watts output power. The amplifier circuit within the IC is well set for noise free operation. Outputs can be directly coupled to the speakers through the decoupling capacitors.
Schematic amplifier dual (stereo) – TDA2822
Suggested PCB
Characteristics for tda2822
- supply voltage down to 1.8v
- low crossover distortion
- low quiescent current
- bridge or stereo configuration
The TDA2822M is a monolithic integrated circuit in 8 lead Minidip package. It is intended for use as dual audio power amplifier in portable radios.
BOM to assemble the amplifier.
Last Update: 07/08/2021 14:41
| Part | Value | Description | Quantity |
| Resistors 1/4W 5% | |||
| P1 | 10K | 10K Potentiometer (103) | 1 |
| R3, R4 | 4.7 | Yellow, violet, red, gold. | 2 |
| R3, R4 | 10K | Brown, black, orange, gold. | 2 |
| Capacitors | |||
| C1, C2 | 10uF/16V | Electrolytic Capacitor | 2 |
| C3, C8, C9 | 100nF | Ceramic Capacitor or Film | 3 |
| C4, C5, C10 | 100uF/16V | Electrolytic Capacitor | 3 |
| C6, C7 | 470uF/16V | Electrolytic Capacitor | 2 |
| Semiconductors | |||
| IC1 | TDA2822 | Audio amplified integrated circuit. | 1 |
| Miscellaneous | |||
| CN1 | IN (Audio Input) | Terminal block 3 pin 5.08 mm | 1 |
| CN2 | VCC (Power Supply) | Terminal block 2 pin 5.08 mm | 1 |
| CN3 | OUT (Audio Output) | Terminal block 3 pin 5.08 mm | 1 |
| Solder, Wires, PCB, Case, Power Supply, etc. | |||
The power supply for this circuit can be from batteries or a power supply of 3 to 12 volts for 1 ampere, if necessary put a heat sink on the integrated circuit, for details see the IC datasheet.
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Download the files of this assembly, including the printed circuit board in PDF, PNG, Postscript and Gerber.
TDA2822 datasheet em PDFST Micro electronics
Datasheet em PDF UNISONIC TECHNOLOGIES
This IC is evaluatable as TDA2822m, tda2822l, tda2822d and tda2822a and TDA2822H
Buy kits TDA2822 in AliExpress with free Shipping in the Worldwide.
pcb size….
I made it but the sound is very weak. And the integrated heating up very hard. what’s the problem ? Please note that I used an 50k potentiometer
Hello mahmoud
Send me photos!
size of the pcb plz sir
Hello dhana
5,8 fm x 3,81 cm
Olá Toni,
Vc tem essa placa pcb para vender aqui no Brasil?
Qto custa?
Obrigado,
hildeu
Olá Hildeu
Tenho equivalente:
Excelente. me lo llevo…
Hello Sa7an
Thanks your feedback!
You have a problem on part list. C3 and C4 are 100uf no 100nf
can i use speaker
You can…
good headphone amp
i tried to make this one, and partly it succeeded, i have to much of ground noise, how can i eliminate that?
i dont have a potentiometer at hand so i did hook it up directly wonder if the ground noise is related or not, and if related, is there a way to use this circuit without an potentiometer? i would like to hook directly in and have an out so that there is no volume control
Yes. you shoul add a resistor of about 5-10k to ground…
Could be supplied trough USB port? Or the usb can be damaged? Sorry for my english!
Hi Tronic
You can use the USB port! Good job!
I do not speak English, too! XD
Good morning, sir.
I would just like to ask: is there a way to make this amplifier have a 2 x 2 watts output?
I’m not an electrician and I know very little about electronic circuits so I would appreciate it very much if you could assist me with this regard.
Thank you very much.
Hi korrill
2 x 1 Watts
Build 2 modules of the BTL Version…
sir,
is there any way to make a booster for cell phone gprs signal using the same IC or other?
No way.!