TDA2030 2.1 lm1875 2.1 or TDA2050 2.1

STD TDA2030 2.1 lm1875 2.1 or TDA2050 2.1

Audio

Analog

Power

License: CC-BY-NC-SA 3.0

Update time： 2023-05-05 14:55:02

Creation time： 2023-05-05 14:53:32

Description

The TDA2030 2.1 amplifier is a circuit that uses two TDA2030 integrated circuits for the stereo channels (left and right) and one TDA2030 in bridge mode for the subwoofer channel (bass).

The TDA2030 is a class AB audio amplifier that can operate with voltages up to 36V and currents up to 3.5A. It has a good sound quality, low distortion and thermal and short-circuit protection. It can be used in both single and bridge configurations, increasing the output power.

The circuit also uses a NE5532 dual operational amplifier to make the preamplifier and the low-pass filter for the subwoofer channel. The NE5532 is a low-noise and high-speed operational amplifier, widely used in audio applications.

The circuit is powered by a symmetrical source of 12V + 12V, which can be obtained from a transformer with double secondary of 12V and a bridge rectifier with filtering capacitors. The source also uses two voltage regulators LM7812 and LM7912 to provide a stable voltage of 12V for the operational amplifier. This circuit is ideal for those who want to build a 2.1 sound system for their computer, TV or other audio device.

Details

https://xtronic.org/circuit/tda2030-2-1-or-lm1875-2-1-power-amplifier/

Detalhes

https://www.te1.com.br/2023/05/circuito-amplificador-tda2030-lm1875-2-1/

Design Drawing

schematic diagram

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PCB

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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	KBL608	B1	KBL	1
2	100n	C1,C2,C18,C21,C27,C28,C33,C34	C5B3	8
3	10nF	C3,C4,C5,C6	C050-024X044	4
4	6800uF	C7,C8	E7,5-18	2
5	100nF	C9,C10,C13,C14	C050-024X044	4
6	220uF	C11,C12	E2,5-7	2
7	47n	C15	C5B3	1
8	2.2uF	C16,C17	E2-5	2
9	C5/7.2	C16A,C17A,C29A	C5B7.2	3
10	220pF	C19,C20,C32	C2.5-2	3
11	120pF	C22,C23	C2.5-2	2
12	4,7n	C24	C5B3	1
13	22n	C25,C26	C5B2.5	2
14	10uF	C29	E2-5	1
15	22uF	C30,C31,C35,C36	E2-5	4
16	100n	C37,C38	C5B2.5	2
17	7812	IC1	78XXS	1
18	7912	IC2	79XXS	1
19	TDA2030	IC5,IC6,IC7,IC8	CB360-2	4
20	led	LED1,LED2	LED5MM	2
21	47	R1,R2	0411/12	2
22	1.5K	R3,R4	0207/10	2
23	10K	R5,R6,R9,R14,R19	0207/10	5
24	1M	R7,R8	0207/10	2
25	47K	R10,R11,R15,R16,R17,R18,R21	0207/10	7
26	1K	R12,R13,R23,R24	0207/10	4
27	100K	R20,R22	0207/10	2
28	22K	R25,R26,R29,R30,R31,R32,R35,R37,R39	0207/10	9
29	680	R27,R28,R36,R38	0207/10	4
30	1	R33,R34,R40,R41	0207/10	4
31	0,47R/2W	R42,R43	P0613/15	2
32	POWER	CN1	3-PIN-5.08MM	1
33	SUB	CN2	2-PIN-5.08MM	1
34	OUT	CN3	3-PIN-5.08MM	1
35	in	CN4	JST-XH-03-PACKAGE-ROUND-PAD	1
36	NE5532N	IC3,IC4	DIL08	2
37	50k	P1A,P2A,P3A	RK097-DUAL-ELEMENT	3
38	50k	P1,P2,P3	3RP/1610G	3