2 layers94.5 × 55 mm
Overview
The AS3320 is an uncategorised made by Alfa with 18 pins. Voltage Controlled Filter (VCF).
PCBKit's library has its KiCad symbol (Audio:AS3320, from KiCad's library) and its footprint (Package_DIP:DIP-18_W7.62mm, from KiCad's library), ready for a KiCad board. 9 open-source boards in 6 repositories on GitHub use it.
Symbol
Footprint
Pinout
18| Pin | Name | Type |
|---|---|---|
| 1 | IN1 | Input |
| 2 | IN2 | Input |
| 3 | GND | Power in |
| 4 | CAP2 | Passive |
| 5 | CAP1 | Passive |
| 6 | OUT2 | Output |
| 7 | OUT1 | Output |
| 8 | VRES | Input |
| 9 | IRES | Input |
| 10 | OUT4 | Output |
| 11 | CAP4 | Passive |
| 12 | VCFI | Input |
| 13 | VEE | Power in |
| 14 | VCC | Power in |
| 15 | OUT3 | Output |
| 16 | CAP3 | Passive |
| 17 | IN3 | Input |
| 18 | IN4 | Input |
Open-source boards using it
All 9- 2 layers63.5 × 112.3 mm
- 2 layers76 × 100 mm
Vcf as3320 lpf v1 panelized
EchelonForce/vcf_as3320_lp
This is a design for a eurorack low pass VCF using the AS3320 VCF chip.
174 parts2 - 2 layers
Vcf pro one
patricecolet/synth
Atelier synthé analogique : cartes KiCad, firmwares Arduino/Teensy, interfaces Pure Data. Interface MIDI/CV pour RSF Kobol Expander.
53 partsMIT - 4 layers345 × 165 mm
Boom-1
jdotw/OpInst-Bass-1
Three-voice analog synth with a digital control surface using CEM3340, AS3320 and similar discrete analog components.
702 parts4 - 2 layers
CEM3340 Voice Board
jdotw/OpInst-Bass-1
Three-voice analog synth with a digital control surface using CEM3340, AS3320 and similar discrete analog components.
13 parts4 - 2 layers30.5 × 112.3 mm
- 2 layers38 × 100 mm
Vcf as3320 lpf v1
EchelonForce/vcf_as3320_lp
This is a design for a eurorack low pass VCF using the AS3320 VCF chip.
87 parts2
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Is there a KiCad symbol and footprint for the AS3320?
Yes. The symbol is Audio:AS3320 and the footprint Package_DIP:DIP-18_W7.62mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
Where is the AS3320 datasheet?
Alfa publishes it: the Datasheet link on this page opens it.
What can replace the AS3320?
Parts like it in the library: the LM3914N-1 by Texas Instruments, the MTBD3-I1180743 by MINTRON, the D3914 by Silicore and the SC8206A4 by Hangzhou Silan Microelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the AS3320?
9 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
