Video BCD Decoder

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STD Video BCD Decoder

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Update time： 2021-08-12 03:33:25

Creation time： 2021-08-08 23:33:58

Description

BCD to Decimal logic module for use in video synthesizers. Expected input/output voltages are 1v. Inputs need to be able to handle signals up to 12v without being damaged. Functionally has 3 binary inputs, 8 decimal outputs, and an analog output. May possibly add some other features.

Design Drawing

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PCB

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PCB_Video BCD Decoder
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	PJ302M	1,2,3,4,5,7,10	PJ302M	7
2	10u	C1,C2,C3,C4	CAP-D5.0×F2.0	4
3	100n	C5,C6,C7,C8,C9,C10,C11,C12,C13,C14,C15,C16,C17,C18,C19,C20,C21,C22	RAD-0.1	18
4	1N4001	D1,D2	DO-41_BD2.4-L4.7-P8.70-D0.9-RD	2
5	1N5711	D3,D4,D5,D6,D7,D8,D9,D10,D11,D12	DO-35_BD2.0-L4.0-P8.00-D0.5-FD	10
6	To Jacks on PCB 2	J1	PINSHRD_PTH_2X07	1
7	Power	J2	EURORACK10	1
8	FB	L1,L2	R_AXIAL-0.4	2
9	100k	R1,R8,R12,R46,R48,R52,R58	R_AXIAL-0.3	7
10	499	R2,R6,R10,R16,R17,R24,R25,R32,R33,R40,R41,R51,R54,R57	R_AXIAL-0.3	14
11	1k	R3,R4,R5,R7,R9,R11,R14,R15,R18,R19,R22,R23,R26,R27,R30,R31,R34,R35,R38,R39,R42,R43,R53,R55,R56,R59	R_AXIAL-0.3	26
12	3.9k	R13,R20,R21,R28,R29,R36,R37,R44	R_AXIAL-0.3	8
13	49.9k	R45	R_AXIAL-0.3	1
14	200k	R47	R_AXIAL-0.3	1
15	10k	R49	R_AXIAL-0.3	1
16	10k(tbd)	R50	R_AXIAL-0.3	1
17	78L05	U1	TO-92-3_L4.8-W3.7-P2.54-L	1
18	CD74HC42E	U4	DIP-16_L19.2-W6.6-P2.54-LS7.6-BL	1
19	74HC240N	U9	DIP20	1
20	LM6172	U2,U3,U5,U6,U7,U8,U11	DIP-8_L9.2-W6.4-P2.54-LS8.7-BL	7
21	TL072	U10	DIP-8_L9.2-W6.4-P2.54-LS8.7-BL	1