DIY Workshop1x4VCRouter Documentation - Seismic Industriesseismic.industries/wp-content/uploads/2016/05/DIY... · 2016. 5. 12. · 2 X 8 V E 3 GND 15 X0 4 A1 16 A0 1 X3 7 X2 6 X1

VC Route DIY Workshop - Voltage Controlled 1x4 Router Module Raffael Segmüller - © by Seismic Industries Contents of this documentation are for fair use only. CC by SA 2.0

Inhalt 1! Module Description ............................................................................................................. 1!2! Circuit Description ............................................................................................................... 2!

2.1! CV Input Buffer / Summing Amplifier ........................................................................... 2!2.2! Cascaded Comparator / BCD Decoder ........................................................................ 2!2.3! Logic Inverter ............................................................................................................... 2!2.4! DG409 .......................................................................................................................... 3!

3! Build Instructions ................................................................................................................ 4!3.1! Tools ............................................................................................................................ 4!3.2! Build up sequence ........................................................................................................ 4!3.3! Power Connection ........................................................................................................ 4!

4! BOM .................................................................................................................................... 5!5! Pick&Place .......................................................................................................................... 6!6! Schematic ........................................................................................................................... 7!

page 1

1 Module Description The VC Route module is a based on the DG409 CMOS Analog Multiplexer from Intersil. It has a 1to4 or vice versa architecture. Signals can be fed in both directions. Switching fre-quencies of several kHz is no problem for the circuit.

The 1to4 / 4to1 input jacks are used for the signals to be processed. The ROUTE SELECT potentiometer sets the multiplexer channel manu-ally and is summed with the voltage present at the ROUTE CV. The ROUTE CV input is used to choose the corresponding switch in the multiplexer channel. The INHIBIT is used to disable the routing function of the modules. All switches are isolated when a logic high (>1V) is present.

The module can be used for many purposes. For example:

• Choose waveforms from an oscillator • Choose Filter Output (or Input) characteristics from a State Variable Filter • Multiplexing • Patch Variations (Open/Closed Hihats, something like that) • By chaining two VC Route modules "back2back2" (4to1, 1to4) you can achieve com-

plex source destination scenarios with lots of possibilities.

page 2

DIY 1x4 VC Route Module Workshop

2 Circuit Description The circuit can be divided into 4 main function blocks:

• CV Input Buffer / Summing Amplifier • Cascaded Comparator / BCD Decoder • Logic Inverter • Analog Multiplexer

2.1 CV Input Buffer / Summing Amplifier A CV Input Buffer (U2A) is used to achieve high input impedance for the ROUTE CV input. The summing Amplifier (U2B) allows for manual dial and simultaneous voltage control of the Routing Path. Resistors R4 and R5 can be changed to allow for different input sensitivities. Initial configura-tion is 0-10V (2.5V window for each stage)

2.2 Cascaded Comparator / BCD Decoder Two comparators (U2C & U2D) are used to decode the analog CV voltage into a 2Bit BCD signal for driving the digital decode circuit of the DG409.

2.3 Logic Inverter The Logic Inverter circuit is necessary to modify the DG409 ENABLE input into a more usab-le INHIBIT input, to grant a "normally ON" working mode rather than "normally OFF". It is simply made of a single NPN Transistor.

page 3


2.4 DG409 Some of you may know the CD405x Analog Multiplexers, which in fact is quite similiar, but has some disadvantages. For example the CD405x does not allow you to process negati-ve voltages below -1V. You can of course use some special circuit design to achieve this function with the CD405x, but it will make your circuit more complicated and requires more parts. Therefore the DG409 was chosen over the CD4052. The DG409 had more improve-ments, it has lower ON resistance and faster switch transition time.(tTRANS < 250ns). The DG409 offers differential 4 channel ana-log CMOS multiplexers and a TTL/CMOS compatible digital decode circuit for channel selection, a voltage reference for logic thresh-olds and an ENABLE input for device selection when several units are present. In the VC Route module - instead of using the two channels for differential multiplexing - one channel is used to process the actual I/O signals. The second channel is used to turn the LED's, which display the current dialed route, ON and OFF.

page 4


3 Build Instructions

3.1 Tools Make shure you have the following tools ready:

• Soldering Iron • Solder wire, solder wick • Tweezers • Side cutting plier (to cutout the PCB and frontpanel) • Sanding Paper (for smoothing the cut edges of the PCB and frontpanel)

3.2 Build up sequence When building the kit you preferably start with the SMT components and then move on to the bigger THT ones. A possible build up sequence is:

1. Semiconductors (like IC's, Transistors, ...) 2. Ceramic Capacitors 3. Resistors 4. Inductors 5. Electrolytic Capacitors 6. Power Connector 7. Jacks 8. LED's

a. Cutout the frontpanel and premount it to define the length of the leds legs b. Solder and cut the legs c. Then remove the frontpanel

9. Potentiometers 10. Mechanical

a. Mount the frontpanel b. Tighten the knurled nuts of the jacks c. Fasten the knobs of the potentiometers

3.3 Power Connection Connect the 10 pin ribbon cable like this:

IMPORTANT: The red wire usually carries the -12V Signal in Eurorack synthesizers. Doublecheck your power rails before powering the module up. Power inversion will destroy your module.

page 5

4 BOM

Comment Designator Qty Value Supplier Mouser Part Nr

CAP PSU C1, C2 2 22uF Mouser 667-EEE-FK1C220R Capacitor 0805 C3, C4, C5, C6 4 100n Phonejack CH1_IN1, CH1_IN2, CH1_IN3, CH1_IN4, CH1_OUT, INHIBIT, SELECT CV 7 SI LED D1, D2, D3, D4 4 Mouser 859-LTW-420D7 Inductor 100nH L1, L2 2 100nH Mouser NLCV32T-R10M-PFR Pinhead 10Pole PWR 1 BC849C NPN Q1 1 Mouser 771-BC849C-T/R Resistor 0805 R1 1 270k Resistor 0805 R14 1 22k Resistor 0805 R2 1 120k Resistor 0805 R3 1 220k Resistor 0805 R4, R15 2 10k Resistor 0805 R5, R16 2 100k Resistor 0805 R6, R7, R11, R12 4 39k Resistor 0805 R8, R13 2 2M2 Resistor 0805 R9, R10 2 82k Pot Stereo 50k lin SELECTOR 1 50k lin SI DG409DYZ U1 1 Mouser 968-DG409DYZ TL074 U2 1 Mouser 511-TL074ACDT

page 6


5 Pick&Place

page 7


6 Schematic

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

D D

C C

B B

A A

Title

Number RevisionSize

A3

Date: 01.03.2016 Sheet ofFile: Y:\Documents\..\14_VC_Selector_2x4.SchDocDrawn By:

1 1

PWRA2 2

PWRB3 3

PWRC4 4

PWRD5 5

PWRE6 6

PWRF7 7

PWRG8 8

PWRH9 9

PWRI10 10

PWRJ

L1

L2

22uFC1

22uFC2

CH1_IN1

CH1_IN2

CH1_IN3

CH1_IN4

INHIBIT

CH1_OUT

13

2 50k linSELECTORA

46

5 50k linSELECTORB

D1LED

D2LED

D3LED

D4LED

SELECT CV

V+

V-

GND

100k

R5

120k

R2

220k

R3

270k

R1

V-

GND

V+

GNDGND

10k

R4

39k

R7 39k

R6

2M2

R8

82k

R10

39k

R11

82k

R9

39k

R12

2M2

R13

GND

GND

A

B

100nC3

100nC4

100n

C5

22k

R14GND

V+

GND

Y211

Y013 Y 9

Y310

VCC 14

Y112

EN2

X 8

VEE 3GND15

X04

A116 A01

X37 X26 X15

U1

DG409DYZ

100nC6

GND

V-

GND

V- V- V- V- GND

GND

Q1BC849

100k

R16

10kR15

GND

V+

GND

places the logo on the PCB


changelog***********2015 12 23 - v0.1 - pcb erstellt - initiale version2016 02 02 - v0.2 - SELECT CV agezuegelta sodass jumper von J2A nach J3A für Grounding des SELECT CV inputs realisiert werden kann.

2

31A

U2A

TL0745

67B

U2B

TL074

10

98C

U2C

TL074

12

1314D

U2D

TL074

V-

11V+

4

U2ETL074

GND

CO

PIC101

PIC102COC1

PIC201

PIC202COC2

PIC301

PIC302COC3

PIC401PIC402

COC4

PIC501PIC502

COC5

PIC601PIC602

COC6

PICH10IN101

PICH10IN102PICH10IN103

COCH10IN1PICH10IN201

PICH10IN202

PICH10IN203


PICH10IN302

PICH10IN303


PICH10IN402

PICH10IN403

COCH10IN4

PICH10OUT01

PICH10OUT02

PICH10OUT03

COCH10OUT

PID101PID102

COD1PID201PID202

COD2PID301PID302

COD3PID401PID402

COD4

PIINHIBIT01

PIINHIBIT02

PIINHIBIT03

COINHIBIT

PIL101 PIL102

COL1

PIL201 PIL202

COL2

PIPWR01

COPWRAPIPWR02

COPWRB

PIPWR03

COPWRC

PIPWR04

COPWRD

PIPWR05

COPWRE

PIPWR06

COPWRF

PIPWR07

COPWRG

PIPWR08

COPWRH

PIPWR09

COPWRI

PIPWR010

COPWRJ

PIQ10B

PIQ10C

PIQ10E

COQ1

PIR101 PIR102COR1

PIR201 PIR202COR2

PIR301 PIR302COR3

PIR401 PIR402COR4

PIR501 PIR502COR5 PIR601 PIR602

COR6

PIR701 PIR702COR7

PIR801 PIR802COR8

PIR901 PIR902COR9

PIR1001 PIR1002COR10

PIR1101 PIR1102

COR11




PIR1501

PIR1502COR15


PISELECT CV01

PISELECT CV02

PISELECT CV03

COSELECT CV

PISELECTOR01PISELECTOR02

PISELECTOR03 COSELECTORA


PISELECTOR06

COSELECTORB

PIU101PIU102

PIU103

PIU104

PIU105PIU106PIU107

PIU108

PIU109

PIU1010

PIU1011PIU1012

PIU1013

PIU1014

PIU1015

PIU1016

COU1

PIU201

PIU202

PIU203

COU2A

PIU205

PIU206

PIU207

COU2B

PIU208

PIU209

PIU2010

COU2C

PIU2012

PIU2013

PIU2014

COU2D

PIU204

PIU2011

COU2E

PIC102

PIC201

PIC301

PIC402

PIC501

PIC601

PICH10IN101

PICH10IN201

PICH10IN301

PICH10IN401 PICH10OUT01

PIINHIBIT01

PIPWR03

PIPWR04

PIPWR05

PIPWR06

PIPWR07

PIPWR08

PIQ10E

PIR601

PIR901

PIR1402

PISELECT CV01

PISELECT CV03

PISELECTOR01

PIU1015

PIU205


PISELECTOR04

PISELECT CV02 PIU203

PIR1401PIU108

PIR1302

PIU101

PIU2014

PIR1202

PIR1301

PIU2012

PIR1102 PIU2013

PIR902 PIR1001

PIR1101

PIR802

PIR1002

PIU1016PIU208

PIR702

PIR801

PIU2010

PIR602 PIU209PIR402 PIR501PIR401PIU201

PIU202

PIR302

PIR701

PIR1201

PIU207

PIR201PISELECTOR02

PIR102

PIR202 PIR301

PIR502 PIU206

PIQ10C

PIR1501

PIU102

PIQ10BPIR1602

PIL201

PIPWR09

PIPWR010

PIL101PIPWR01

PIPWR02

PIINHIBIT03

PIINHIBIT02 PIR1601

PID401

PIU104

PID301

PIU105

PID201

PIU106

PID101

PIU107

PICH10OUT03

PICH10OUT02PIU109

PICH10IN403

PICH10IN402 PIU1013

PICH10IN303

PICH10IN302

PIU1012

PICH10IN203

PICH10IN202

PIU1011

PICH10IN103

PICH10IN102

PIU1010

PIC101PIC302

PIC502

PIL102

PIR1502

PISELECTOR03

PIU1014

PIU204

PIC202PIC401

PIC602

PID102 PID202 PID302 PID402

PIL202

PIR101

PIU103

PIU20111

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

D D

C C

B B

A A

Title

Number RevisionSize

A3

Date: 01.03.2016 Sheet ofFile: Y:\Documents\..\14_VC_Selector_2x4.SchDocDrawn By:

1 1

PWRA2 2

PWRB3 3

PWRC4 4

PWRD5 5

PWRE6 6

PWRF7 7

PWRG8 8

PWRH9 9

PWRI10 10

PWRJ

L1

L2

22uFC1

22uFC2

CH1_IN1

CH1_IN2

CH1_IN3

CH1_IN4

INHIBIT

CH1_OUT

13

2 50k linSELECTORA

46

5 50k linSELECTORB

D1LED

D2LED

D3LED

D4LED

SELECT CV

V+

V-

GND

100k

R5

120k

R2

220k

R3

270k

R1

V-

GND

V+

GNDGND

10k

R4

39k

R7 39k

R6

2M2

R8

82k

R10

39k

R11

82k

R9

39k

R12

2M2

R13

GND

GND

A

B

100nC3

100nC4

100n

C5

22k

R14GND

V+

GND

Y211

Y013 Y 9

Y310

VCC 14

Y112

EN2

X 8

VEE 3GND15

X04

A116 A01

X37 X26 X15

U1

DG409DYZ

100nC6

GND

V-

GND

V- V- V- V- GND

GND

Q1BC849

100k

R16

10kR15

GND

V+

GND



changelog***********2015 12 23 - v0.1 - pcb erstellt - initiale version2016 02 02 - v0.2 - SELECT CV agezuegelta sodass jumper von J2A nach J3A für Grounding des SELECT CV inputs realisiert werden kann.

2

31A

U2A

TL0745

67B

U2B

TL074

10

98C

U2C

TL074

12

1314D

U2D

TL074

V-

11V+

4

U2ETL074

GND

CO

PIC101

PIC102COC1

PIC201

PIC202COC2

PIC301

PIC302COC3

PIC401PIC402

COC4

PIC501PIC502

COC5

PIC601PIC602

COC6

PICH10IN101

PICH10IN102PICH10IN103


PICH10IN202

PICH10IN203


PICH10IN302

PICH10IN303


PICH10IN402

PICH10IN403

COCH10IN4

PICH10OUT01

PICH10OUT02

PICH10OUT03

COCH10OUT

PID101PID102

COD1PID201PID202

COD2PID301PID302

COD3PID401PID402

COD4

PIINHIBIT01

PIINHIBIT02

PIINHIBIT03

COINHIBIT

PIL101 PIL102

COL1

PIL201 PIL202

COL2

PIPWR01

COPWRAPIPWR02

COPWRB

PIPWR03

COPWRC

PIPWR04

COPWRD

PIPWR05

COPWRE

PIPWR06

COPWRF

PIPWR07

COPWRG

PIPWR08

COPWRH

PIPWR09

COPWRI

PIPWR010

COPWRJ

PIQ10B

PIQ10C

PIQ10E

COQ1

PIR101 PIR102COR1

PIR201 PIR202COR2

PIR301 PIR302COR3

PIR401 PIR402COR4

PIR501 PIR502COR5 PIR601 PIR602

COR6

PIR701 PIR702COR7

PIR801 PIR802COR8

PIR901 PIR902COR9


PIR1101 PIR1102

COR11




PIR1501

PIR1502COR15


PISELECT CV01

PISELECT CV02

PISELECT CV03

COSELECT CV


PISELECTOR03 COSELECTORA


PISELECTOR06

COSELECTORB

PIU101PIU102

PIU103

PIU104

PIU105PIU106PIU107

PIU108

PIU109

PIU1010

PIU1011PIU1012

PIU1013

PIU1014

PIU1015

PIU1016

COU1

PIU201

PIU202

PIU203

COU2A

PIU205

PIU206

PIU207

COU2B

PIU208

PIU209

PIU2010

COU2C

PIU2012

PIU2013

PIU2014

COU2D

PIU204

PIU2011

COU2E

PIC102

PIC201

PIC301

PIC402

PIC501

PIC601

PICH10IN101

PICH10IN201

PICH10IN301

PICH10IN401 PICH10OUT01

PIINHIBIT01

PIPWR03

PIPWR04

PIPWR05

PIPWR06

PIPWR07

PIPWR08

PIQ10E

PIR601

PIR901

PIR1402

PISELECT CV01

PISELECT CV03

PISELECTOR01

PIU1015

PIU205


PISELECTOR04

PISELECT CV02 PIU203

PIR1401PIU108

PIR1302

PIU101

PIU2014

PIR1202

PIR1301

PIU2012

PIR1102 PIU2013

PIR902 PIR1001

PIR1101

PIR802

PIR1002

PIU1016PIU208

PIR702

PIR801

PIU2010

PIR602 PIU209PIR402 PIR501PIR401PIU201

PIU202

PIR302

PIR701

PIR1201

PIU207

PIR201PISELECTOR02

PIR102

PIR202 PIR301

PIR502 PIU206

PIQ10C

PIR1501

PIU102

PIQ10BPIR1602

PIL201

PIPWR09

PIPWR010

PIL101PIPWR01

PIPWR02

PIINHIBIT03

PIINHIBIT02 PIR1601

PID401

PIU104

PID301

PIU105

PID201

PIU106

PID101

PIU107

PICH10OUT03

PICH10OUT02PIU109

PICH10IN403

PICH10IN402 PIU1013

PICH10IN303

PICH10IN302

PIU1012

PICH10IN203

PICH10IN202

PIU1011

PICH10IN103

PICH10IN102

PIU1010

PIC101PIC302

PIC502

PIL102

PIR1502

PISELECTOR03

PIU1014

PIU204

PIC202PIC401

PIC602

PID102 PID202 PID302 PID402

PIL202

PIR101

PIU103

PIU2011