Z3372 Filter
brer-rabbit·zoxnoxious·kicad/z3372/z3372.kicad_pcb
About the Z3372 Filter PCB
Z3372 Filter is an open source PCB design by brer-rabbit, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 80 × 80 mm, with 120 components from 47 distinct parts.
Other key parts include the AS3360-Audio, TL074, AS3372, DG442XY and NE5532. By type, the board carries 54 resistors, 45 capacitors, 14 ICs, 3 transistors, 3 connectors and 1 diode.
It belongs with the audio designs in this gallery.
From the project
Analog synth / software interface
The Z3372 Analog Signal Processor utilized Alfa Rpar's AS3372 VCF/VCA. It also contains a white noise source which can be run through the filter. Some interseting modulation options are present, along with a stereo output.

Main components on the Z3372 Filter
Z3372 Filter bill of materials (BOM)
120 components, 47 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AS3360-Audio | SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 2 | TL074 | TSSOP-14_4.4x5mm_P0.65mm | U2, U5 |
| 1 | AS3372 | SOIC-24W_7.5x15.4mm_P1.27mm | U3 |
| 1 | DG442XY DG442xY | SOIC-16_3.9x9.9mm_P1.27mm | U4 |
| 1 | NE5532 | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 2 | MUX508 | SOIC-16_3.9x9.9mm_P1.27mm | U7, U10 |
| 1 | TL072 | SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | L79L05_TO92 | TO-92_Inline_Wide | U9 |
| 1 | CAT9555YI-T2 | TSSOP-24_4.4x7.8mm_P0.65mm | U11 |
| 1 | AD5328 | TSSOP-16_4.4x5mm_P0.65mm | U12 |
| 1 | M24C02-WMN | SOIC-8_3.9x4.9mm_P1.27mm | U13 |
| 1 | LM4040AIM3-2.5 | SOT-23 | U14 |
| 3 | MMBT3904 | SOT-23 | Q1, Q2, Q3 |
| 1 | Conn_01x01 | PinHeader_1x01_P2.54mm_Vertical | J1 |
| 1 | Conn_02x20_Odd_Even | PinHeader_2x20_P2.54mm_Horizontal | J2 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | LED | LED_0603_1608Metric | D2 |
| 25 | 0.1U 0.1u | C_0603_1608Metric | C1, C2, C3, C4, C5, C8, C10, C12 +17 |
| 1 | 4N7 4n7 | C_0603_1608Metric | C6 |
| 3 | 10N 10n | C_0603_1608Metric | C7, C41, C42 |
Show 27 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 33P 33p | C_0603_1608Metric | C9, C30 |
| 2 | 4U7 4u7 | C_0805_2012Metric | C11, C44 |
| 1 | 22U 22u | C_1206_3216Metric | C13 |
| 3 | 33N 33n | C_0805_2012Metric | C15, C17, C20 |
| 3 | 1u | C_0805_2012Metric | C18, C43, C45 |
| 1 | 330P 330p | C_0603_1608Metric | C21 |
| 1 | 22N 22n | C_0603_1608Metric | C22 |
| 1 | 47N 47n | C_0603_1608Metric | C27 |
| 2 | 2u2 | C_Rect_L7.2mm_W5.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C34, C38 |
| 2 | 330K 330k | R_0603_1608Metric | R1, R2 |
| 2 | 36K 36k | R_0603_1608Metric | R3, R38 |
| 15 | 20K 20k | R_0603_1608Metric | R4, R6, R10, R11, R16, R30, R31, R32 +7 |
| 4 | 15K 15k | R_0603_1608Metric | R5, R29, R51, R54 |
| 2 | 9K1 9k1 | R_0603_1608Metric | R7, R13 |
| 2 | 30K 30k | R_0603_1608Metric | R8, R9 |
| 2 | 47K 47k | R_0603_1608Metric | R12, R26 |
| 6 | 1k | R_0603_1608Metric | R14, R20, R24, R25, R27, R49 |
| 3 | 33K 33k | R_0603_1608Metric | R15, R36, R44 |
| 4 | 4K7 4k7 | R_0603_1608Metric | R17, R53, R55, R56 |
| 2 | 51 | R_0603_1608Metric | R18, R48 |
| 3 | 100K 100k | R_0603_1608Metric | R19, R46, R47 |
| 2 | 68K 68k | R_0603_1608Metric | R21, R22 |
| 1 | 22K 22k | R_0603_1608Metric | R23 |
| 1 | 39K 39k | R_0603_1608Metric | R28 |
| 1 | 10K 10k | R_0603_1608Metric | R45 |
| 1 | 27K 27k | R_0603_1608Metric | R50 |
| 1 | 2k | R_0603_1608Metric | R52 |
Z3372 Filter design files
The KiCad project lives in the brer-rabbit/zoxnoxious repository on GitHub; these links point at the commit this page was built from.
Z3372 Filter: common questions
How big is the Z3372 Filter PCB?
The Z3372 Filter measures 80 × 80 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Z3372 Filter?
120 components, from 47 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Z3372 Filter design files?
From the brer-rabbit/zoxnoxious repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Z3372 Filter design in my own project?
Yes, under the terms of its GPL-3.0 license, which brer-rabbit chose for the repository.
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