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apfaudio
A eurorack-friendly audio frontend compatible with many FPGA boards, based on the AK4619VN audio CODEC.
| Reference | Value | Description |
|---|---|---|
| Q1 | 2N7002E | |
| U1 | AK4619VN AUDIO CODEC | |
| U2,U3 | TL074 OP AMP | |
| U4 | PCA9557PW IO EXPANDER | |
| U5 | 24AA025UIDT EEPROM | |
| U6 | CY8CMBR3108 | |
| U8 | LM4040DBZ-3 VREF | |
| U9 |
| TL072 OP AMP |
| U10 | PCA9635 LED DRIVER |
|---|
| C3,C10,C16,C28 | 100.0uF |
|---|
| C4,C5,C9,C11,C26 | 22.0uF |
|---|
| C6,C8,C13-C15,C17,C27,C29,C31 | 100nF |
|---|
| C7,C12 | 2.2uF |
|---|
| C18-C21 | 220pF |
|---|
| C22-C25 | 56p |
|---|
| C30 | 2.2nF |
|---|
| D1,D2 | 1N4007FL |
|---|
| D3,D5,D7,D9,D11,D13,D15,D17 | LED 0402 GREEN |
|---|
| D4,D6,D8,D10,D12,D14,D16,D18 | LED 0402 RED |
|---|
| J1 | CONN 2x5 P=2.54mm |
|---|
| J2 | CONN 2x6 P=2.54mm |
|---|
| J3 | Conn_01x14_Socket |
|---|
| J4-J11 | AUDIO JACK PJ-324M0 |
|---|
| L1-L5 | FERRITE |
|---|
| R1-R5,R8,R11,R14,R17,R20,R21,R24,R25,R28,R29,R32 | 4K7 |
|---|
| R6,R9,R12,R15,RN5-RN7 | 100K |
|---|
| R7,R10,R13,R16,R18,R22,R26,R30 | 1K |
|---|
| R19,R23,R27,R31 | 56K |
|---|
| R33 | 330R |
|---|
| R42 | X.X |
|---|
| R43 | 402K |
|---|
| RN1-RN4 | 14.3K |
|---|
| RN8-RN11 | 120R |
|---|
| RN12,RN13 | 560R |
|---|