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--- ain_4_board_parts_list [2016/08/10 15:36] – [Assembly] latigid_on
+++ ain_4_board_parts_list [2016/08/10 15:56] (current) – removed latigid_on
@@ Line 1: / Line 1: @@
-====== AIN_4 module ======
-This is a simple way of scaling CVs (as might come from a modular) ready for an STM322F4 Core module.
-===== Schematic =====
-{{:ain_4_schematic.png?nolink&480|}}
-The circuit is a very simple series of two inverting amplifiers per channel. The first is a TL072 powered from +12/-12V, while the second is an MCP6002 powered from 3v3/0V (ground). It's possible to preset the ranges (see below) but it's probably more useful to use the associated [[Control Board]].
-===== BOM =====
-^Type     ^Qty	^Value	^Package	^Parts^Notes^
-^resistors^
-|         |20   |49k9   |0204/7|R1, R2, R4, R5, R6, R7, R8, R10, R11, R12, R13, R14, R16, R17, R18, R19, R20, R22, R23, R24|
-|         |4    |30k    |0204/7|R3, R9, R15, R21|nominal gain can be adjusted e.g. (22k/49.9k)*5V = 2.2V|
-^capacitors^
-| |4|10p|025X050|C1, C3, C5, C7|
-| |9|100n|025X050|C10, C12, C13, C14, C15, C16, C17, C18, C20|remove 1 if powering from Core|
-| |3|10u|electrolytic 2,5-6|C9, C11, C19|remove 1 if powering from Core|
-| |4|optional|025X050|C2, C4, C6, C8|can use another e.g. 10pF cap here for more filtering|
-^inductors^
-| |2|BEAD|5MM|L1, L2|
-^ICs^
-| |2|MCP6002P|DIL08|IC2, IC4|sockets are recommended|
-| |2|TL072P|DIL08|IC1, IC3|sockets are recommended|
-^Vreg^
-| |1|optional|TO-220|VR1|remove if powering from Core|
-^headers^
-| |7|		|1X02_SMALL|JP1, JP2, JP3, JP4, JP5, JP6, JP7|check board for headers as SIL strips of 3, 5 or 6|
-| |8|		|1X03_SMALL|JP8, JP9, JP10, JP11, JP12, JP13, JP14, JP15|
-| |2|		|2*5 (shrouded)|J1, J2|
-===== Assembly =====
-Putting the board together is simple. As usual, start with the flattest components and work your way up.
-==== Resistors ====
-Four 30k resistors as marked, the remainder are 49k9. For best results, match R1/R2, R7/R8 (and so on), and R4/R5/R6, R10/R11/R12 (and so on). The value is less important than the minimum deviation.
-{{:ain_4_30k_resistors.png?nolink&300|}}
-==== Capacitors ====
-Four 10p as marked in pink, electrolytics in yellow, blue are optional. Remainder are 10n.
-{{:ain_4_10pf.png?nolink&300|}}
-==== Power ====
-Standard Eurorack header. Red = -12V, Blue = +12V, Green = 0V(ground). For Core power, bridge the yellow solder jumper, otherwise install the Vreg circuit in pink
-{{:ain_4_power_rails.png?nolink&300|}}
-=== Standalone use ===
-For simplest results, use the complementary [[Control board]]. Otherwise see below for header functions.
-== Five pin header ==
-{{:ain_4_sil_1.png?nolink&300|}}
-For scaling bipolar CVs, connect or switch into OFFSET (e.g. +5V)
-For 0-5V operation, leave SWITCH open; for 0-10V operation, jumper or switch in SWITCH
-{{:ain_4_sil_2.png?nolink&300|}}
-With a 100k pot facing you, solder the left leg to 0V(ground) the centre to WIPER and the right to LEG. WIPER and LEG may be jumpered if pots aren't desired.