AS

“АLFA RPAR”

Joint Stock Company ALFA

Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv

2019 v.1

1

AS3363

AS3363 - Three Channel VCA (voltage polarizer)

Features



three VCA blocks with a wide range of functions

AS3363D



two linear controls for each VCA

(SOIC16

– 150 mil)



simple signal mixing



can combine high impedance outputs



provides high attenuation (-100 dB)



simplifies multiplexer design



low current consumption of 3mA typ at ± 12 V

Application

For electronic music

General description

AS3363 contains three VCA blocks, which are intended for use in musical synthesizer applications (VCA blocks, voltage

polarizer, multiplexers, morphing, ring modulators etc.).

VCA1 and VCA2 implement function of controlling amplification and

sign of output signal (voltage polarizing -

changing sign and amplitude through “silence”). Additional control input controls

attenuation of output current -

thus realizing function of double multiplication input signal on two control signals. VCA3 block

has additional feature

– possibility of control/mixing of two input signals.

Such solution gives vast opportunities in designing new synth solutions.

Pin information

Circuit Block Diagram

Pin No

Pin Name

Description

1

GND

Ground

2

In1

Input VCA1

3

CVMix1

Control Input Mixer VCA1

4

Vcntrl1

Control Input VCA1

5

Io1

Current Output VCA1

6

Io3

Current Output VCA3

7

Vcntrl3

Control Input VCA3

8

Vee

Negative Supply

9

In3A

Input VCA3_A

10

In3B

Input VCA3_B

11

CVMix3

Control Input Mixer VCA3

12

Io2

Current Output VCA2

13

Vcntrl2

Control Input VCA2

14

CVMix2

Control Input Mixer VCA2

15

In2

Input VCA2

16

Vcc

Positive supply