FraVerb (FV1) Rev.1.Apr.23.
2008
Layout for FV-1 digital processor IC by www.spinsemi.com which includes onboard effects like reverb, chorus, pitch shift,
etc. The layout features the application circuit from the datasheet plus extra circuitry to make it more compatible with
electric guitars and pedalboards: FET buffered inputs, 3.3v regulator and filter capacitors to provide the required power.
According to datasheet, presets and effects of any kind can be created by using an external EEPROM, pads are provided
for this purpose. Offboard wiring except for the potentiometers are not shown on the layout, view offboard wiring project for
ideas on how to connect power and bypass. Visit www.tonepad.com for more! 0 1/2 1 11/2 2
21/2
IN IN +9V OUT OUT 50k 50k 50k
L R L R trim p2 trim p1 trim p0
2M2 2M2
10k 8002 PF
10k + 2 MOC.DAPENOT
2M2
2M2
2M2
2M2
1n
1n
2.2n
G
47uF s0 s1 s2
2.2n
1uF
1uF
int-ext
+
1k 1k
IC3
1k 1k
100 11/2
3.3u
1n 10k 32768
+
+
1n 10k
+
20k
20k
20k
20k
1uF 100n 47uF
3.3u
1uF +
+
1-VF
100 + 100
1uF
+
FV-1
100n 47uF 1uF
1n 10k 1
3.3u
+
+
32768 1n 10k
20k
20k
20k
20k
100
1k IC3 1k
BREVARF
3.3u
1k 1k
+
int-ext
2.2n
s0 s1 s2 47uF
+ 2.2n
1uF
1uF
1/2
+
10k G G
2M2
2M2
2M2
2M2
1n
1n
10k
50k 50k 50k 2M2 IN IN 2M2 +9V OUT OUT
trim p2 trim p1 trim p0 L R L R
0
LAYOUT LAYOUT READY TO TRANSFER
(seen from copper/fv1 side) (seen from component side) (single sided pcb toner transfer)
Layout and presentation by Francisco Peña 2001-2008®.
All rights reserved. Authorization for personal use only,
Parts List
Resistors Capacitors Transistors &ICs Notes:
Permission refused for posting from other sites.
6 - 2M2 (2.2M) 4 - 1µF 2 - 2N5457* (or other FET) This project uses SMD part(s) soldered to the copper side
of a single sided pcb. The rest of the parts are mounted
4 - 1k 2 - 3.3µF
Permission for posting/serving limited to
* watch FET pinout
thru hole as they normally are. Two layout images are
4 - 10k 2 - 0.047µF 1 - FV-1 provided: one looking at each side of the pcb.
any commercial use is forbidden.
4 - 20k 2 - 47µF Other
1 - 100ohm 1 - 100nF 1 - LED FV1 can use an external memory for custom programmed
http://www.tonepad.com
Pots 2 - 2.2nF 3 - jumpers algorithms to create digital effects, refer to the datasheet
for more information. Pads provided on the layout require
3 - 50k (trim.) 2 - 1nF 3 - SPST switches to solder EEPROM on copper side.
9v
Vin Vout
3.3v Schematic
+ gnd 3.3uF 1k OUTPUT
9v 47uF 47uF inL
1 28 outL
DC9v
2M2 inR
2 27 outR
10k 2.2n
INPUT .047 3 26
3.3uF 1k
1uF 1k 1uF 4 25 1uF
Q1 3.3v 100
5 24 3.3v 3.3v 3.3v 3.3v 10k 2.2n
2M2 2M2 10k 1nF LED
6 23
50k 50k 50k
3.3v 7 22
p2 p1 p0
9v 9v 8 21
2M2 100nF 9 20
32768 3.3v 3.3v 3.3v
.047 3.3v 10 19
20k 20k 20k
1uF 1k 11 18
Q1
20k s2 s1 s0
12 17
2M2 2M2 10k 1nF
13 16
int/ext
14 15
