0 Circuit power audio amplifier integrated circuit tda2002 – 8 Watts

Eagle 3D + povray  image of the circuit tda2002

The supply voltage may be anywhere between +8 and +18V, and the IC will accept transient voltage peaks of up to 28V without damage. The IC can supply a short-circuit output current of 3.5 A and 15W of power at a case temperature of 90°C. At a supply voltage of 14.4V (fully-chargerd battery ) the maximum output power isat least 4.8W, and typically 5.2W into a 4Ω load.
The IC will, in fact, drive load impedances as low as 2Ω, in which case the maximum output power is at least 7W and typically 8W. The above power are all measured at 10% distortion, but obviously at lower output powers the distortion is much less (Typically 0.2% ).

Specifications:

D.C. Input: 8 – 18V, 10 – 20 VA min.
Power output:
> 10 W RMS, 2 ohm load, 16V DC supply.
> 6W RMS, 4 ohm load, 16V DC supply.
> 4W RMS, 4 ohm load, 12V DC supply.
THD: < 0.2% (1W, 4 ohm load) Gain: 40 dB maximum. S/N ratio : > 80 dBA. (G = 20 dB)
> 60 dBA (G = 40 dB)
Frequency response: < 20 Hz to > 40 kHz (-3dB, 4 ohm load)
Input level:
< 100 mV for full output (G = 40 dB)
< 1V for full output(G = 20 dB)

Schematic diagram of the audio power amplifier tda2002

Suggestion for PCB amplifier circuit tda 2002 – 1:1 scale

Pcb option 1

Layout component side

List of components for the amplifier

Parts	Value
Capacitors
C1	10 µF 25V Electrolytic Capacitor
C2	1000 µF 25V Electrolytic Capacitor
C3	470 µF 25V Electrolytic Capacitor
C1 , C3	100 nF Polyester or ceramic capacitor – 100n, 0.1, .1, or 104
C2	39 nF Polyester or ceramic capacitor – .039, 39n or 393
Semiconductors
IC1	TDA2002 or TDA2003
Connectors
IN	Two-terminal connector signal input
OUT	Two-terminal connector Audio Output
PWR	Two-terminal connector Power Supply
Resistors 1/4 watts 5 %
R1	220 Ohms – Red, Red, Brown, Gold
R2	39 Ohms – Orange, White, Black, Gold
R3	1 Ohm – Brown, Black, Gold, Gold
R4	2.2 Ohms – Red, Red, Gold, Gold
Miscellaneous
P1	100k -Ohms Potentiometer to adjust the volume
Others	Heat-sink, power supply, wires, pcb, etc.

Circuit power supply for use with tda2002 -  15 volts / 1.2 amps

Schematic circuit of power supply for tda2002

Suggested pci for mounting the power for the circuit with tda2xxx – 1:1 scale

Pcb option 1

Pcb option 2

Layout component side

List of components for assembly of the power supply

Parts	Value
Capacitors
C1	100nF 100 nF Polyester Capacitor – 100n, 0.1, .1, or 104
C2	4700µF 35V Polyester Capacitor
C3 ,C4, C5, C6	10nF Polyester or ceramic capacitor – 10n, 0,01, or 103
Semiconductors
D1, D2, D3, D4	1N4004
LED1	Led 5mm any color
Resistor 1/4 watt 5%
R1	10k Brown, Black, Orange, Gold
Miscellaneous
T1	Transformer – Primary according to the network and secondary 12-volt / 1.5 amps
AC	Connector for transformer
VCC	Output Connector VCC
Other	Wire, Plugs, box, pcb, etc.