Stackable opamp mini board

11 months ago 319
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

A breadboard-compatible dual non-inverter audio amp built around an opamp.

Exposes most of its internals on pins for more versatility (variable gain, simple filter, ...). Some parts are optional.

Can be stacked to create a mixer with 1 board per stereo channel and 1 board for a master volume.

Documents

Preamp schematic

Stackable audio preamp PCB

BOM

ID Designator Footprint Quantity
1 D1 DO-35 1
2 CD1 CAP-D6.3XF2.5 1
3 P1 HDR-6X1/2.54 1
4 RV1,RV2 HDR-TH_3P-P2.54-V 2
5 CD2,CD3 1206 2
6 PS1,PS2,PGND1,PVCC1,PVCC2,PGND2,PSS1,PSS2 HDR-1X1/2.54 8
7 HOA1,HOA2 DIP-1X4P2.54 2
8 CI1,CI2,C-1,C-2 0805 4
9 CO1,CO2 0805 2
10 CD4 0805 1
11 RI+1,RI-1,RI+2,RI-2 0805 4
12 RO1,RF1,RF2,RM1,RM2,RO2 0805 6
13 R-1,R-2 0805 2
14 RR1,RR2 0805 2
15 RL1,RL2 0805 2
16 U1 SOIC-8_150MIL 1

Attachments

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