CEM3340 VCO

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STD CEM3340 VCO

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Update time： 2023-01-08 03:27:23

Creation time： 2018-08-23 01:52:23

Description

https://www.muffwiggler.com/forum/viewtopic.php?t=170054

Design Drawing

schematic diagram

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PCB

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BOM

ID	Name	Designator	Footprint	Quantity
1	47u	C1,C2	CAP-5*11	2
2	1u	C3	0805	1
3	10n	C4,C8,C10,C11	0805	4
4	4.7u	C5	0805	1
5	100n	C6,C7,C9,C12,C13,C14,C15	0805	7
6	1.5n	C11POLY	RAD-0.1	1
7	100k	COARSE,FINE,FMAMT,PWM	ALPHA-9MM	4
8	1N4148W	D1	SOD-123	1
9	SPDT	FMMODE	SW	1
10	Power Header	H1	DIP-2X5P-2.54	1
11	2N3904	Q1,Q2	TO-92(TO-92-3)	2
12	Bead	R1,R2	JUMPER2	2
13	100k	R3,R6,R10,R11,R30,R34	0805	6
14	47k	R4,R13,R26	0805	3
15	300k	R5,R31	0805	2
16	200k	R7,R19,R49	0805	3
17	51k	R8	0805	1
18	560k	R9,R24	0805	2
19	140k	R12	0805	1
20	5.6k	R14,R17	0805	2
21	10k	R15,R40,R41	0805	3
22	680	R16	0805	1
23	24k	R18	0805	1
24	470	R20,R25,R38,R42	0805	4
25	1M	R21	0805	1
26	1.8k	R22	0805	1
27	1.5M	R23	0805	1
28	270k	R27,R35	0805	2
29	130k	R28	0805	1
30	1k	R29,R33,R37,R46	0805	4
31	150k	R32	0805	1
32	91k	R36	0805	1
33	220	R39	0805	1
34	33k	R43,R44	0805	2
35	68k	R45	0805	1
36	27k	R50	0805	1
37	20k	RT1/HF	TRIMMER_TH	1
38	10k	RT2/SCALE,RT3/OFFS	TRIMMER_TH	2
39	100k	RT4/TRI,RT5/SAW,RT6/SQU,RT7/SINTRIM	TRIMMER_TH	4
40	50k	RT8/SINSYM	TRIMMER_TH	1
41	LP2985A-10DBVR	U1	SOT-23-5	1
42	CEM3340	U2	DIP16-2.54-19.2X7.62MM	1
43	TL074CDT	U3	SOIC-14_150MIL	1
44	V/OCT	U4	THONKICONNVOID	1
45	FM	U5	THONKICONNVOID	1
46	PWM	U6	THONKICONNVOID	1
47	HSYNC	U7	THONKICONNVOID	1
48	SSYNC	U8	THONKICONNVOID	1
49	TRI	U9	THONKICONNVOID	1
50	SAW	U10	THONKICONNVOID	1
51	SQU	U11	THONKICONNVOID	1
52	SIN	U12	THONKICONNVOID	1